Re: [Dump-devel] [patch] Support for ext4 filesystems under linux.

[Gertjan van Wingerde <gwingerde@gm...>]

Hi Stelian,

On Thu, May 28, 2009 at 11:03 PM, Stelian Pop <stelian@...> wrote:
> Hi Gertjan,
>
> On Tue, May 26, 2009 at 12:50:14PM -0700, Gertjan van Wingerde wrote:
>
>> I've created a patch for dump to properly dump ext4 filesystems under Linux.
>> It currently only works on Linux as it heavily depends on the ext2fs
>> library, which is only used on Linux for dumping regular files.
>
> First of all, thanks for your patch. I suppose this require a recent
> version of ext2fs libs ?
>

Yes, this requires a recent version of the ext2fs libs. I am not sure
which version is the first version that works, but I've tested it with
the latest version of the ext2fs libs.

> However, I'm a bit puzzled because I thought ext4 was quite different than
> ext3, and your patch seems way too simple to make dump work on ext4.
>
> In particular, dump does raw seeks on the underlying disk device and
> reads fixed size blocks, and I thought ext4, with its "extent" format,
> has changed this. But maybe I'm wrong and the ext2fs library is able
> to cope with all the differences.

Well, as far as I understand it, ext4 has not changed the way the data
blocks has stored. It has only changed the way an inode points to
these data blocks (it has a much more efficient mechanism for keeping
track of which data blocks belong to a file; especially for large
files with many consecutive blocks on disk.

This is where the ext2fs library is helping us, as it can point us
directly to all the data blocks of a file, and takes care of reading
the "meta-data" for an inode that points to those blocks by itself.
This is why the patch (on Linux) no longer takes care of reading the
indirect blocks, double indirect blocks and triple indirect blocks by
itself. This is all done by the ext2fs lib.

>
> I have to admit that I (still) haven't had the time to look at ext4 yet,
> so I really cannot comment further on the validity of this patch.
>
> So if somebody else here can give this a try it would be great.
>
> Stelian.

---
Gertjan

Re: [Dump-devel] [patch] Support for ext4 filesystems under linux.

[Stelian Pop <stelian@po...>]

Hi Gertjan,

On Tue, May 26, 2009 at 12:50:14PM -0700, Gertjan van Wingerde wrote:

> I've created a patch for dump to properly dump ext4 filesystems under Linux.
> It currently only works on Linux as it heavily depends on the ext2fs
> library, which is only used on Linux for dumping regular files.

First of all, thanks for your patch. I suppose this require a recent
version of ext2fs libs ?

However, I'm a bit puzzled because I thought ext4 was quite different than
ext3, and your patch seems way too simple to make dump work on ext4.

In particular, dump does raw seeks on the underlying disk device and
reads fixed size blocks, and I thought ext4, with its "extent" format,
has changed this. But maybe I'm wrong and the ext2fs library is able
to cope with all the differences.

I have to admit that I (still) haven't had the time to look at ext4 yet,
so I really cannot comment further on the validity of this patch.

So if somebody else here can give this a try it would be great.

Stelian.

-- 
Stelian Pop <stelian@...>

[Dump-devel] [patch] Support for ext4 filesystems under linux.

[Gertjan van Wingerde <gwingerde@gm...>]

Hi,

I've created a patch for dump to properly dump ext4 filesystems under Linux.
It currently only works on Linux as it heavily depends on the ext2fs
library, which is only used on Linux for dumping regular files.

---
Gertjan


http://www.nabble.com/file/p23730083/dump_ext4.diff dump_ext4.diff 
-- 
View this message in context: http://www.nabble.com/-patch--Support-for-ext4-filesystems-under-linux.-tp23730083p23730083.html
Sent from the Dump - Dev mailing list archive at Nabble.com.

Re: [Dump-devel] [patch] Use sys_clone under Linux to share I/O contexts between dump processes v2

[Jeff Moyer <jmoyer@re...>]

Stelian Pop <stelian@...> writes:

> On Mon, Mar 23, 2009 at 03:07:01PM -0400, Jeff Moyer wrote:
>
>> Here is a follow-up patch that should work everywhere.  Comments and
>> suggestions are welcome.  I'd love to hear at least *some* feedback from
>> the dump maintainer on this.
>
> Sorry for my silence on this. I have been rather busy lately and not had
> much time for dump.
>
> But I have no objections on your patch, and you can consider it applied,
> and part of the next version of dump, whenever I get the time to
> do a new release (as a matter of fact, there are quite a few pending
> changes in CVS so I might just force me to do a release sometime soon).
>
> Thanks for the patch !

Thanks for taking time to look it over, Stelian!

Cheers,
Jeff

Re: [Dump-devel] [patch] Use sys_clone under Linux to share I/O contexts between dump processes v2

[Stelian Pop <stelian@po...>]

On Mon, Mar 23, 2009 at 03:07:01PM -0400, Jeff Moyer wrote:

> Here is a follow-up patch that should work everywhere.  Comments and
> suggestions are welcome.  I'd love to hear at least *some* feedback from
> the dump maintainer on this.

Sorry for my silence on this. I have been rather busy lately and not had
much time for dump.

But I have no objections on your patch, and you can consider it applied,
and part of the next version of dump, whenever I get the time to
do a new release (as a matter of fact, there are quite a few pending
changes in CVS so I might just force me to do a release sometime soon).

Thanks for the patch !

Stelian.

-- 
Stelian Pop <stelian@...>

[Dump-devel] [patch] Use sys_clone under Linux to share I/O contexts between dump processes v2

[Jeff Moyer <jmoyer@re...>]

Jeff Moyer <jmoyer@...> writes:

> Marc Thomas <marc@...> writes:
>
>> Hi Jeff,
>>
>> Patch applies cleanly to dump-0.4b41, but it doesn't then compile on
>> my system (Slackware 12.2, kernel 2.6.27.7, CFQ scheduler):
>>
>> tape.c: In function 'fork_clone_io':
>> tape.c:797: error: 'CLONE_IO' undeclared (first use in this function)
>> tape.c:797: error: (Each undeclared identifier is reported only once
>> tape.c:797: error: for each function it appears in.)
>>
>> I'm no programmer, but I did find that changing the include for
>> <sched.h> to <linux/sched.h> fixed that.
>
> Hi, Marc.  Thanks for testing, and for the suggested fix.  There is
> another problem with compiling the patch on systems that don't have the
> CLONE_IO flag at all, and I need to address that.

Here is a follow-up patch that should work everywhere.  Comments and
suggestions are welcome.  I'd love to hear at least *some* feedback from
the dump maintainer on this.

Thanks,
Jeff

Index: dump/tape.c
===================================================================
RCS file: /cvsroot/dump/dump/dump/tape.c,v
retrieving revision 1.90
diff -u -p -r1.90 tape.c
--- dump/tape.c	4 Jun 2008 19:27:48 -0000	1.90
+++ dump/tape.c	23 Mar 2009 19:05:00 -0000
@@ -187,6 +187,41 @@ static sigjmp_buf jmpbuf;	/* where to ju
 static int gtperr = 0;
 #endif
 
+/*
+ * Determine if we can use Linux' clone system call.  If so, call it
+ * with the CLONE_IO flag so that all processes will share the same I/O
+ * context, allowing the I/O schedulers to make better scheduling decisions.
+ */
+#ifdef __linux__
+/* first, pull in the header files that define sys_clone and CLONE_IO */
+#include <syscall.h>
+#define _GNU_SOURCE
+#include <sched.h>
+#include <unistd.h>
+#undef _GNU_SOURCE
+
+/* If either is not present, fall back on the fork behaviour */
+#if ! defined(SYS_clone) || ! defined (CLONE_IO)
+#define fork_clone_io fork
+#else /* SYS_clone */
+/* CLONE_IO is available, determine which version of sys_clone to use */
+#include <linux/version.h>
+/*
+ * Kernel 2.5.49 introduced two extra parameters to the clone system call.
+ * Neither is useful in our case, so this is easy to handle.
+ */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,49)
+/* clone_flags, child_stack, parent_tidptr, child_tidptr */
+#define CLONE_ARGS SIGCHLD|CLONE_IO, 0, NULL, NULL
+#else
+#define CLONE_ARGS SIGCHLD|CLONE_IO, 0
+#endif /* LINUX_VERSION_CODE */
+pid_t fork_clone_io(void);
+#endif /* SYS_clone */
+#else /* __linux__ not defined */
+#define fork_clone_io fork
+#endif /* __linux__ */
+
 int
 alloctape(void)
 {
@@ -755,6 +790,16 @@ rollforward(void)
 #endif
 }
 
+#ifdef __linux__
+#if defined(SYS_clone) && defined(CLONE_IO)
+pid_t
+fork_clone_io(void)
+{
+	return syscall(SYS_clone, CLONE_ARGS);
+}
+#endif
+#endif
+
 /*
  * We implement taking and restoring checkpoints on the tape level.
  * When each tape is opened, a new process is created by forking; this
@@ -801,7 +846,7 @@ restore_check_point:
 	/*
 	 *	All signals are inherited...
 	 */
-	childpid = fork();
+	childpid = fork_clone_io();
 	if (childpid < 0) {
 		msg("Context save fork fails in parent %d\n", parentpid);
 		Exit(X_ABORT);
@@ -1017,7 +1062,7 @@ enslave(void)
 		}
 
 		if (socketpair(AF_UNIX, SOCK_STREAM, 0, cmd) < 0 ||
-		    (slaves[i].pid = fork()) < 0)
+		    (slaves[i].pid = fork_clone_io()) < 0)
 			quit("too many slaves, %d (recompile smaller): %s\n",
 			    i, strerror(errno));
 

[Dump-devel] Restore -x and orphans

[hondza <mbdrzq8jm1wljrwyo1sk@gm...>]

Hello.

Is it possible to detect and remove orphans within the 'x' mode (as
opposed to 'r' mode, where it works out of the box)?

Stelian's reply to a similar question says it should work:

http://article.gmane.org/gmane.comp.archivers.dump.user/328

Yet it doesn't work for me. The files deleted between two incrementals
remain after 'restore -x'. The source code agrees, as the initsymtable()
function is always called with NULL and dumpsymtable() is never called
for 'x', so it doesn't "remember".

Is this feature planned? I think it would be handy to be able to restore
a *subtree* to the exact state it was when the incremental backup was
being done.

Regards,

-- 
hondza | GPG key: http://www.hondza.adslink.cz/key.asc
Fingerprint: 31E7 EF56 7280 5C89 75E9 FF9D 010E 175F 7823 CF38
GPG/PGP encrypted/signed emails are welcome.

Re: [Dump-devel] [patch] Use sys_clone under Linux to share I/O contexts between dump processes

[Jeff Moyer <jmoyer@re...>]

Marc Thomas <marc@...> writes:

> Hi Jeff,
>
> Patch applies cleanly to dump-0.4b41, but it doesn't then compile on
> my system (Slackware 12.2, kernel 2.6.27.7, CFQ scheduler):
>
> tape.c: In function 'fork_clone_io':
> tape.c:797: error: 'CLONE_IO' undeclared (first use in this function)
> tape.c:797: error: (Each undeclared identifier is reported only once
> tape.c:797: error: for each function it appears in.)
>
> I'm no programmer, but I did find that changing the include for
> <sched.h> to <linux/sched.h> fixed that.

Hi, Marc.  Thanks for testing, and for the suggested fix.  There is
another problem with compiling the patch on systems that don't have the
CLONE_IO flag at all, and I need to address that.

Cheers,
Jeff

Re: [Dump-devel] [patch] Use sys_clone under Linux to share I/O contexts between dump processes

[Marc Thomas <marc@dr...>]

Hi Jeff,

Patch applies cleanly to dump-0.4b41, but it doesn't then compile on my 
system (Slackware 12.2, kernel 2.6.27.7, CFQ scheduler):

tape.c: In function 'fork_clone_io':
tape.c:797: error: 'CLONE_IO' undeclared (first use in this function)
tape.c:797: error: (Each undeclared identifier is reported only once
tape.c:797: error: for each function it appears in.)

I'm no programmer, but I did find that changing the include for 
<sched.h> to <linux/sched.h> fixed that.

Performance is indeed improved, in my case from 11801 kB/s to 13434 kB/s 
dumping an LVM snapshot of the ext3 root filesystem on md-raid 
(mirrored) to another LVM volume in the same md-raid (same physical 
spindles).

I suspect the faster the destination device, the more apparent the 
performance improvement.

Stelian - were there any objections to including this patch?

BR,
Marc

On 17 Nov 08 Jeff Moyer wrote:
> Hi,
> 
> dump performs poorly when run under the CFQ I/O scheduler.  The reason
> for this is that the dump command interleaves I/O between two (or
> three?) cooperating processes.  This is about the worst case scenario
> you can get for CFQ, as the I/O access pattern within each process is
> sequential.  Thus, CFQ will idle for a number of milliseconds waiting
> for the current process to issue more I/O before switching to the next.
> 
> Now, this behaviour can be changed with tuning.  However, if the dump
> command simply shared I/O contexts between cooperating processes, CFQ
> could make more intelligent decisions about I/O scheduling.
> 
> So, here are the numbers, running under 2.6.28-rc3.
> 
> deadline    82241 kB/s
> cfq	    34143 kB/s
> cfq-shared  82241 kB/s
> 
> cfq-shared denotes that the dump utility was patched with the attached
> patch to share I/O contexts.  As you can see, with a very little bit of
> code change, we can drastically increase the performance of dump under
> CFQ (which is the default I/O scheduler used in a number of
> distributions).
> 
> For more information on the underlying problems, you can refer to the
> following kernel discussion:
>   http://lkml.org/lkml/2008/11/9/133
> 
> Comments are appreciated.
> 
> Cheers,
> 
> Jeff
> 

[Dump-devel] [patch] Use sys_clone under Linux to share I/O contexts between dump processes

[Jeff Moyer <jmoyer@re...>]

Hi,

dump performs poorly when run under the CFQ I/O scheduler.  The reason
for this is that the dump command interleaves I/O between two (or
three?) cooperating processes.  This is about the worst case scenario
you can get for CFQ, as the I/O access pattern within each process is
sequential.  Thus, CFQ will idle for a number of milliseconds waiting
for the current process to issue more I/O before switching to the next.

Now, this behaviour can be changed with tuning.  However, if the dump
command simply shared I/O contexts between cooperating processes, CFQ
could make more intelligent decisions about I/O scheduling.

So, here are the numbers, running under 2.6.28-rc3.

deadline    82241 kB/s
cfq	    34143 kB/s
cfq-shared  82241 kB/s

cfq-shared denotes that the dump utility was patched with the attached
patch to share I/O contexts.  As you can see, with a very little bit of
code change, we can drastically increase the performance of dump under
CFQ (which is the default I/O scheduler used in a number of
distributions).

For more information on the underlying problems, you can refer to the
following kernel discussion:
  http://lkml.org/lkml/2008/11/9/133

Comments are appreciated.

Cheers,

Jeff

diff -up ./dump/tape.c.orig ./dump/tape.c
--- ./dump/tape.c.orig	2005-08-20 17:00:48.000000000 -0400
+++ ./dump/tape.c	2008-11-17 16:40:42.575792509 -0500
@@ -187,6 +187,40 @@ static sigjmp_buf jmpbuf;	/* where to ju
 static int gtperr = 0;
 #endif
 
+/*
+ * Determine if we can use Linux' clone system call.  If so, call it
+ * with the CLONE_IO flag so that all processes will share the same I/O
+ * context, allowing the I/O schedulers to make better scheduling decisions.
+ */
+#ifdef __linux__
+#include <syscall.h>
+
+#ifndef SYS_clone
+#define fork_clone_io fork
+#else /* SYS_clone */
+#include <linux/version.h>
+ 
+/*
+ * Kernel 2.5.49 introduced two extra parameters to the clone system call.
+ * Neither is useful in our case, so this is easy to handle.
+ */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,49)
+/* clone_flags, child_stack, parent_tidptr, child_tidptr */
+#define CLONE_ARGS SIGCHLD|CLONE_IO, 0, NULL, NULL
+#else
+#define CLONE_ARGS SIGCHLD|CLONE_IO, 0
+#endif /* LINUX_VERSION_CODE */
+
+#define _GNU_SOURCE
+#include <sched.h>
+#include <unistd.h>
+#undef _GNU_SOURCE
+pid_t fork_clone_io(void);
+#endif /* SYS_clone */
+#else /* __linux__ not defined */
+#define fork_clone_io fork
+#endif /* __linux__ */
+
 int
 alloctape(void)
 {
@@ -755,6 +789,16 @@ rollforward(void)
 #endif
 }
 
+#ifdef __linux__
+#ifdef SYS_clone
+pid_t
+fork_clone_io(void)
+{
+	return syscall(SYS_clone, CLONE_ARGS);
+}
+#endif
+#endif
+
 /*
  * We implement taking and restoring checkpoints on the tape level.
  * When each tape is opened, a new process is created by forking; this
@@ -801,7 +845,7 @@ restore_check_point:
 	/*
 	 *	All signals are inherited...
 	 */
-	childpid = fork();
+	childpid = fork_clone_io();
 	if (childpid < 0) {
 		msg("Context save fork fails in parent %d\n", parentpid);
 		Exit(X_ABORT);
@@ -1017,7 +1061,7 @@ enslave(void)
 		}
 
 		if (socketpair(AF_UNIX, SOCK_STREAM, 0, cmd) < 0 ||
-		    (slaves[i].pid = fork()) < 0)
+		    (slaves[i].pid = fork_clone_io()) < 0)
 			quit("too many slaves, %d (recompile smaller): %s\n",
 			    i, strerror(errno));
 

Re: [Dump-devel] support other filesystems

[Stelian Pop <stelian@po...>]

Le mercredi 13 août 2008 à 18:59 +0400, Daneel Yaitskov a écrit :
> Hi everybody!
> 
> I would like to request will developers go to add the support other
> filesystems sush as the reiserfs and the ext4. Ted Tso has said at 30
> June 2008 that after a few weeks the ext4 will become stable.

The support of multiple filesystems in dump has been on the TODO list
for a long time now. It is not so simple because the internal dump data
(tape) format is heavily based on the ext2 internals, and converting the
metadata from some other filesystem (say reiserfs) is bound to be
difficult and lossy.

However, ext4 support is different, because as an evolution of
ext2/ext3, it may (emphasise on *may*) be much simpler to do.

I'm not sure if e2fsprogs fully understands ext4 filesystems yet (dump
does heavily use the libext2fs routines), and since ext4 doesn't use
fixed block sizes anymore, but "[offset, length] pairs", something needs
to be done to put the data in fixed size dump blocks.

Unfortunately, I don't really have the time to do this ATM.

But since you're seeking a way to contribute to dump (as I've seen in a
later post), you're welcome to look at this feature, investigate the
issues, and try cooking up a patch.

Stelian.
-- 
Stelian Pop <stelian@...>

[Dump-devel] support other filesystems

[Daneel Yaitskov <rtfm.rtfm.rtfm@gm...>]

Hi everybody!

I would like to request will developers go to add the support other
filesystems sush as the reiserfs and the ext4. Ted Tso has said at 30
June 2008 that after a few weeks the ext4 will become stable.

Daneel Yaitskov

Re: [Dump-devel] [patch] cron_dump_to_disk example

[Stelian Pop <stelian@po...>]

Le jeudi 15 mai 2008 à 14:55 -0400, Aaron S. Hawley a écrit :
> This is perhaps the last patch I have. 

Applied. Thanks a lot for all your patches.

Stelian.
-- 
Stelian Pop <stelian@...>

Re: [Dump-devel] [patch] cron_dump_to_disk example

[Aaron S. Hawley <aaron.s.hawley@gm...>]

This is perhaps the last patch I have.  It has various niggling
things.  It changes horizontal lines from 79 to 60 characters, adopts
certain Bash extensions for command expansion, makes a few more
whitespace changes, some small alterations of shell commands, and one
wording change to user message.

I also put the license in the two files's headers.  I presume the
license for these scripts are the same as everything else that is
distributed with dump -- the license in the COPYRIGHT file at the root
of the package.

--- backup	14 May 2008 09:24:58 -0000	1.6
+++ backup	14 May 2008 22:32:56 -0000
@@ -1,21 +1,54 @@
 #!/bin/bash
+
+###
+ # Copyright (C) 2001  Eugenio Diaz <getnito@...>
+ #
+ # Redistribution and use in source and binary forms, with or without
+ # modification, are permitted provided that the following conditions
+ # are met:
+ #
+ # 1. Redistributions of source code must retain the above copyright
+ #    notice, this list of conditions and the following disclaimer.
+ # 2. Redistributions in binary form must reproduce the above
+ #    copyright notice, this list of conditions and the following
+ #    disclaimer in the documentation and/or other materials provided
+ #    with the distribution.
+ # 3. Neither the name of the University nor the names of its
+ #    contributors may be used to endorse or promote products derived
+ #    from this software without specific prior written permission.
+ #
+ # THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS''
+ # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ # PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS
+ # OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ # SUCH DAMAGE.
+ #
+ ##
-#
-# This script will make a simple backup of the most critical partitions,
-# using the "dump" facility, into the backup partition.
-#
-# Run the following to make a complete backup:
-#
-# $ su -c "backup full"
-#
-# Run the following to make an incremental backup:
-#
-# $ su -c "backup inc"
-#
-# Add "nodumpdate" to run a backup but not effect the backup state
-# recorded in the file /var/lib/dumpdates and reported by dump -W:
-#
-# $ su -c "backup full nodumpdate"
-#
+ #
+ # This script will make a simple backup of the most critical
+ # partitions, using the "dump" facility, into the backup partition.
+ #
+ # Run the following to make a complete backup:
+ #
+ # $ su -c "backup full"
+ #
+ # Run the following to make an incremental backup:
+ #
+ # $ su -c "backup inc"
+ #
+ # Add "nodumpdate" to run a backup but not effect the backup state
+ # recorded in the file /var/lib/dumpdates and reported by dump -W:
+ #
+ # $ su -c "backup full nodumpdate"
+ #
+ ##

 if [ "$2" = "nodumpdate" ]; then
    UPDATEDDATE=""
@@ -32,7 +65,7 @@
    BTYPE="inc"
    BACKUP="Incremental"
 else
-   echo "Usage: $0 full|inc [nodumpdate]"
+   echo "Usage: $0 full|inc [nodumpdate]"
    exit 1
 fi

@@ -50,12 +83,12 @@

 #
 # Start
-#
+#

 echo
-echo "#####################################################################"
+echo "############################################################"
-echo "Starting ${BACKUP} backup."
+echo "Starting ${BACKUP} backup"
-echo "#####################################################################"
+echo "############################################################"
 echo


@@ -74,24 +107,24 @@
    echo "done."
 else
    echo "failure!"
-   echo " There were problems remounting $BACKUPPART in read-write mode!"
+   echo "There were problems remounting $BACKUPPART in read-write mode!"
    echo "Aborting ${BACKUP} System Dump Backup."
    echo "Aborted."
-   echo "-------------------------------------------------------------------------------"
+   echo "------------------------------------------------------------"
    exit 1
 fi

-echo -n "Checking backup partition for correct dir structure ... "
+echo -n "Checking directory structure on backup partition ... "
 if [ -d $BACKUPPART/$BACKUPDIR -a -w $BACKUPPART/$BACKUPDIR ]; then
    echo "done."

    echo -n "Checking backup partition for available space ... "
-   SREQ=`for i in $FSTODUMP; do dump -$DLEVEL -S $i 2> /dev/null;
done | awk '{x=x+$1/1048576} END {printf "%6.0f\n", x}'`
+   SREQ=$(for i in $FSTODUMP; do dump -$DLEVEL -S $i 2> /dev/null;
done | awk '{x=x+$1/1048576} END {printf "%6.0f\n", x}')
-   SAVAILFREE=`df --block-size=1048576 | grep -Fe $BACKUPPART | awk
'{printf "%6.0f\n", $4}'`
+   SAVAILFREE=$(df --block-size=1048576 | grep -Fe $BACKUPPART | awk
'{printf "%6.0f\n", $4}')
-   SAVAILDEL=`du -s --block-size=1048576 $BACKUPPART/$BACKUPDIR/. |
awk '{printf "%6.0f\n", $1}'`
+   SAVAILDEL=$(du -s --block-size=1048576 $BACKUPPART/$BACKUPDIR/. |
awk '{printf "%6.0f\n", $1}')
-   SAVAIL=`expr $SAVAILFREE + $SAVAILDEL`
+   SAVAIL=$(( $SAVAILFREE + $SAVAILDEL ))

-   if [ `expr $SAVAIL - $SREQ` -gt "0" ]; then
+   if [ "$(( $SAVAIL - $SREQ ))" -gt "0" ]; then
       echo "done."
       echo "Available: $SAVAIL MB Required: $SREQ MB."
    else
@@ -108,17 +141,17 @@
          echo "There were problems remounting $BACKUPPART in read-only mode!"
          echo "Aborting ${BACKUP} System Dump Backup."
          echo "Aborted."
-         echo "-------------------------------------------------------------------------------"
+         echo "------------------------------------------------------------"
          exit 1
       fi
       echo "Aborting ${BACKUP} System Dump Backup."
       echo "Aborted."
-      echo "-------------------------------------------------------------------------------"
+      echo "------------------------------------------------------------"
       exit 1
    fi

    echo -n "Deleting old files ... "
-   if [ `ls -la $BACKUPPART/$BACKUPDIR/ | wc -l` -gt "3" ]; then
+   if [ "$(ls -la $BACKUPPART/$BACKUPDIR/ | wc -l)" -gt "3" ]; then
       rm -f $BACKUPPART/$BACKUPDIR/* &> /dev/null
       echo "done."
    else
@@ -131,10 +164,10 @@
       if [ "$FS" = "/" ]; then
          FSNAME="root"
       else
-         FSNAME=`echo $FS | tr / _ | cut -b 2-`
+         FSNAME="$(echo $FS | tr / _ | cut -b 2-)"
       fi
       sync
-      TODAY="`date +%a%Y%m%d`"
+      TODAY="$(date +%a%Y%m%d)"
       echo -n "Starting dump of $FSNAME ( $FS ) ... "
       if ( dump -$DLEVEL $UPDATEDDATE -z -M -s 27306 -f
$BACKUPPART/$BACKUPDIR/$FSNAME.$BTYPE. -Q
$BACKUPPART/$BACKUPDIR/$FSNAME.$BTYPE.qfa -L ${TODAY}file $FS &>
$BACKUPPART/$BACKUPDIR/$FSNAME.log ) then
          echo "done."
@@ -146,7 +179,7 @@
       fi

       echo -n "Verifying dump of $FSNAME ( $FS ) ... "
-      echo "-------------------------------------------------------------------------------"
>> $BACKUPPART/$BACKUPDIR/$FSNAME.log
+      echo "------------------------------------------------------------"
>> $BACKUPPART/$BACKUPDIR/$FSNAME.log
       echo "Result of dump for $FSNAME ( $FS ):" >>
$BACKUPPART/$BACKUPDIR/$FSNAME.log
       if ( restore -C -M -f $BACKUPPART/$BACKUPDIR/$FSNAME.$BTYPE. >>
$BACKUPPART/$BACKUPDIR/$FSNAME.log 2>&1 ) then
          echo "done."
@@ -155,8 +188,8 @@
          echo "There were problems verifying the dump of $FSNAME ( $FS )."
          echo "Check log file $BACKUPPART/$BACKUPDIR/$FSNAME.log.gz
for more info"
       fi
-      cat $BACKUPPART/$BACKUPDIR/$FSNAME.log |gzip >> $DUMPLOGARCH
+      gzip < $BACKUPPART/$BACKUPDIR/$FSNAME.log >> $DUMPLOGARCH
-      echo "-------------------------------------------------------------------------------"
|gzip >> $DUMPLOGARCH
+      echo "------------------------------------------------------------"
| gzip >> $DUMPLOGARCH
    done

    echo -n "Setting ownership and permissions of dump files ... "
@@ -181,29 +214,29 @@
       echo "There were problems remounting $BACKUPPART in read-only mode!"
       echo "Aborting ${BACKUP} System Dump Backup."
       echo "Aborted."
-      echo "-------------------------------------------------------------------------------"
+      echo "------------------------------------------------------------"
       exit 1
    fi
    echo "Aborting ${BACKUP} System Dump Backup."
    echo "Aborted."
-   echo "-------------------------------------------------------------------------------"
+   echo "------------------------------------------------------------"
    exit 1
 fi

 echo -n "Remounting backup partition read-only ... "
-if ( mount $BACKUPPART -o remount,ro &> /dev/null ) then
+if ( mount $BACKUPPART -o remount,ro &> /dev/null ) then
    echo "done."
 else
    echo "failure!"
    echo "There were problems remounting $BACKUPPART in read-only mode!"
    echo "Aborting ${BACKUP} System Dump Backup."
    echo "Aborted."
-   echo "-------------------------------------------------------------------------------"
+   echo "------------------------------------------------------------"
    exit 1
 fi

 echo "### End of ${BACKUP} System Dump Backup ###"
 echo "Done."
-echo "-------------------------------------------------------------------------------"
+echo "------------------------------------------------------------"

 ## end of script
Index: backup_rotate
===================================================================
--- backup_rotate	5 May 2008 09:25:27 -0000	1.2
+++ backup_rotate	14 May 2008 22:32:56 -0000
@@ -1,11 +1,44 @@
 #!/bin/bash
+
+###
+ # Copyright (C) 2001  Eugenio Diaz <getnito@...>
+ #
+ # Redistribution and use in source and binary forms, with or without
+ # modification, are permitted provided that the following conditions
+ # are met:
+ #
+ # 1. Redistributions of source code must retain the above copyright
+ #    notice, this list of conditions and the following disclaimer.
+ # 2. Redistributions in binary form must reproduce the above
+ #    copyright notice, this list of conditions and the following
+ #    disclaimer in the documentation and/or other materials provided
+ #    with the distribution.
+ # 3. Neither the name of the University nor the names of its
+ #    contributors may be used to endorse or promote products derived
+ #    from this software without specific prior written permission.
+ #
+ # THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS''
+ # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ # PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS
+ # OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ # SUCH DAMAGE.
+ #
+ ##
-#
-# This script will redirect the backup directory to implement desired backup
-# schedules.
-#
-# We will use just a seven day format where we just move a link
-# that represents the backup directory, to point to the day of the week.
-#
+ #
+ # This script will redirect the backup directory to implement desired
+ # backup schedules.
+ #
+ # We will use just a seven day format where we just move a link that
+ # represents the backup directory, to point to the day of the week.
+ ##
+

 #
 # Configuration Parameters
@@ -28,7 +61,7 @@
    echo "done."
 else
    echo "failure!"
-   echo "   There were problems remounting $BACKUPPART in read-write mode!"
+   echo "There were problems remounting $BACKUPPART in read-write mode!"
    echo "Rotation not made!"
    echo "### End of Backup Rotation ###"
    exit 1
@@ -37,7 +70,7 @@
 echo -n "Checking that no directory named \"$BACKUPDIR\" exists ... "
 if [ -d $BACKUPPART/$BACKUPDIR -a ! -L $BACKUPPART/$BACKUPDIR ]; then
    echo "failure!"
-   echo "   Directory \"$BACKUPDIR\" exists. Can't create link!"
+   echo "Directory \"$BACKUPDIR\" exists. Can't create link!"
    echo "Rotation not made!"

    echo -n "Remounting backup partition read-only ... "
@@ -45,7 +78,7 @@
       echo "done."
    else
       echo "failure!"
-      echo "   There were problems remounting $BACKUPPART in read-only mode!"
+      echo "There were problems remounting $BACKUPPART in read-only mode!"
       echo "### End of Backup Rotation ###"
       exit 1
    fi
@@ -62,7 +95,7 @@
    echo "done."
 else
    echo "failure!"
-   echo "   There were problems creating link!"
+   echo "There were problems creating link!"
    echo "Rotation not made!"

    echo -n "Remounting backup partition read-only ... "
@@ -70,10 +103,10 @@
       echo "done."
    else
       echo "failure!"
-      echo "   There were problems remounting $BACKUPPART in read-only mode!"
+      echo "There were problems remounting $BACKUPPART in read-only mode!"
       echo "### End of Backup Rotation ###"
       exit 1
-   fi
+   fi
    echo "### End of Backup Rotation ###"
    exit 1
 fi
@@ -83,8 +116,10 @@
    echo "done."
 else
    echo "failure!"
-   echo "   There were problems remounting $BACKUPPART in read-only mode!"
+   echo "There were problems remounting $BACKUPPART in read-only mode!"
    echo "### End of Backup Rotation ###"
    exit 1
 fi
 echo "### End of Backup Rotation ###"
+
+## end of script

On 5/14/08, Stelian Pop <stelian@...> wrote:
>
>  Le mardi 13 mai 2008 à 20:58 -0400, Aaron S. Hawley a écrit :
>
> > This patch uses the quick-file-access (QFA) and label features of
>  > dump, and verifies each dump with `restore -C`.  The patch also fixes
>  > some strange notes in the comment about restarting Web servers and
>  > making tar files of "database dirs".   I've replaced it with notes on
>  > how to use the script.
>
>
> Thanks, applied.
>
>  Stelian.

Re: [Dump-devel] [patch] cron_dump_to_disk example

[Stelian Pop <stelian@po...>]

Le mercredi 07 mai 2008 à 00:44 -0400, Aaron S. Hawley a écrit :
> This patch tries mounting instead of remounting should the latter
> fail.  Also included are either typo fixes or whitespace changes to
> shell scriptlets that I was annoyed at.

Thanks, applied.

-- 
Stelian Pop <stelian@...>

Re: [Dump-devel] [patch] cron_dump_to_disk example

[Aaron S. Hawley <aaron.s.hawley@gm...>]

This patch tries mounting instead of remounting should the latter
fail.  Also included are either typo fixes or whitespace changes to
shell scriptlets that I was annoyed at.

On 5/5/08, Stelian Pop <stelian@...> wrote:
>
>  Le vendredi 02 mai 2008 à 19:44 -0400, Aaron S. Hawley a écrit :
>
> > This patch uses environment variables for certain values if they're
>  > set to determine the backup partition, backup directory and the file
>  > systems to backup.
>  >
>  > Also included in the patch are whitespace changes to some output
>  > messages, and a typo fix.  Use what you like.
>
>
> Thanks, applied.
>
>  Stelian.

Re: [Dump-devel] [patch] cron_dump_to_disk example

[Stelian Pop <stelian@po...>]

Le vendredi 02 mai 2008 à 19:44 -0400, Aaron S. Hawley a écrit :
> This patch uses environment variables for certain values if they're
> set to determine the backup partition, backup directory and the file
> systems to backup.
> 
> Also included in the patch are whitespace changes to some output
> messages, and a typo fix.  Use what you like.

Thanks, applied.

Stelian.
-- 
Stelian Pop <stelian@...>

Re: [Dump-devel] [patch] cron_dump_to_disk example

[Aaron S. Hawley <aaron.s.hawley@gm...>]

This patch uses environment variables for certain values if they're
set to determine the backup partition, backup directory and the file
systems to backup.

Also included in the patch are whitespace changes to some output
messages, and a typo fix.  Use what you like.

I like the environment variable approach, because I store the settings
in a file of the form:

# /etc/dumprc -- configuration file for dump backups

FSTODUMP="/ /var /home /boot"

export FSTODUMP

## end-of-file

and then use a cron job script of this form:

# /etc/cron.daily/dump -- daily dump backup cron job

. /etc/dumprc

backup_rotate && nice -1 backup inc

## end-of-file

The patch is also attached.
/a

Index: backup
===================================================================
RCS file: /cvsroot/dump/dump/examples/cron_dump_to_disk/backup,v
retrieving revision 1.3
diff -u -r1.3 backup
--- backup	18 Apr 2008 08:42:47 -0000	1.3
+++ backup	2 May 2008 23:17:35 -0000
@@ -31,10 +31,10 @@
 # Configuration Parameters
 #

-BACKUPPART="/backup"
+BACKUPPART=${BACKUPPART:-"/backup"}
-BACKUPDIR="current"
+BACKUPDIR=${BACKUPDIR:-"current"}
 DUMPLOGARCH="$BACKUPPART/backup.dump.log.gz"
-FSTODUMP="/ /var /home /mnt/hdb1 /usr"
+FSTODUMP=${FSTODUMP:-/ /var /home /mnt/hdb1 /usr}
 DUMPFILESMODE="0644"
 DUMPFILESOWN="root.root"

@@ -81,17 +81,17 @@

    if [ `expr $SAVAIL - $SREQ` -gt "0" ]; then
       echo "done."
-      echo " Available: $SAVAIL MB Required: $SREQ MB."
+      echo "Available: $SAVAIL MB Required: $SREQ MB."
    else
       echo "no enough space!"
-      echo " There is not enough space left in $BACKUPPART for the backup!"
+      echo "There is not enough space left in $BACKUPPART for the backup!"
-      echo " Available: $SAVAIL MB Required: $SREQ MB."
+      echo "Available: $SAVAIL MB Required: $SREQ MB."
       echo -n "Remounting backup partition read-only ... "
       if ( mount $BACKUPPART -o remount,ro &> /dev/null ) then
          echo "done."
       else
          echo "failure!"
-         echo " There were problems remounting $BACKUPPART in read-only mode!"
+         echo "There were problems remounting $BACKUPPART in read-only mode!"
          echo "Aborting ${BACKUP} System Dump Backup."
          echo "Aborted."
          echo "-------------------------------------------------------------------------------"
@@ -120,14 +120,14 @@
          FSNAME=`echo $FS|tr / _|cut -b 2-`
       fi
       sync
-      echo -n " Starting dump of $FSNAME ( $FS ) ... "
+      echo -n "Starting dump of $FSNAME ( $FS ) ... "
       if ( dump -$DLEVEL $UPDATEDDATE -z -M -s 27306 -f
$BACKUPPART/$BACKUPDIR/$FSNAME.$BTYPE. $FS &>
$BACKUPPART/$BACKUPDIR/$FSNAME.log ) then
          echo "done."
       else
          echo "problems!"
-         echo " There where problems with the dump of $FSNAME ( $FS )."
+         echo "There where problems with the dump of $FSNAME ( $FS )."
-         echo " Check logfile $BACKUPPART/$BACKUPDIR/$FSNAME.log for more info"
+         echo "Check logfile $BACKUPPART/$BACKUPDIR/$FSNAME.log for more info"
-         echo " Also check log archive file $DUMPLOGARCH."
+         echo "Also check log archive file $DUMPLOGARCH."
       fi
       cat $BACKUPPART/$BACKUPDIR/$FSNAME.log |gzip >> $DUMPLOGARCH
       echo "-------------------------------------------------------------------------------"
|gzip >> $DUMPLOGARCH
@@ -145,14 +145,14 @@

 else
    echo "problems!"
-   echo " There are problems with the directory structure."
+   echo "There are problems with the directory structure."
-   echo " Check dirs: $BACKUPPART/$BACKUPDIR"
+   echo "Check dirs: $BACKUPPART/$BACKUPDIR"
    echo -n "Remounting backup partition read-only ... "
    if ( mount $BACKUPPART -o remount,ro &> /dev/null ) then
       echo "done."
    else
       echo "failure!"
-      echo " There were problems remounting $BACKUPPART in read-only mode!"
+      echo "There were problems remounting $BACKUPPART in read-only mode!"
       echo "Aborting ${BACKUP} System Dump Backup."
       echo "Aborted."
       echo "-------------------------------------------------------------------------------"
@@ -169,13 +169,13 @@
    echo "done."
 else
    echo "failure!"
-   echo " There were problems remounting $BACKUPPART in read-only mode!"
+   echo "There were problems remounting $BACKUPPART in read-only mode!"
    echo "Aborting ${BACKUP} System Dump Backup."
    echo "Aborted."
    echo "-------------------------------------------------------------------------------"
    exit 1
 fi

-echo "End of ${BACKUP} System Dump Backup."
+echo "### End of ${BACKUP} System Dump Backup ###"
 echo "Done."
 echo "-------------------------------------------------------------------------------"
Index: backup_rotate
===================================================================
RCS file: /cvsroot/dump/dump/examples/cron_dump_to_disk/backup_rotate,v
retrieving revision 1.1
diff -u -r1.1 backup_rotate
--- backup_rotate	30 Nov 2001 10:12:40 -0000	1.1
+++ backup_rotate	2 May 2008 23:17:35 -0000
@@ -3,7 +3,7 @@
 # This script will redirect the backup directory to implement desired backup
 # schedules.
 #
-# Currently we will use just a seven day format were we just move a link
+# We will use just a seven day format where we just move a link
 # that represents the backup directory, to point to the day of the week.
 #

@@ -17,8 +17,8 @@
    REALDIR=`date +%A`
 fi

-BACKUPPART="/backup"
+BACKUPPART=${BACKUPPART:-"/backup"}
-BACKUPDIR="current"
+BACKUPDIR=${BACKUPDIR:-"current"}

 echo "### Start of Backup Rotation ###"
 echo "Using backup partition: $BACKUPPART"


On 4/18/08, Stelian Pop <stelian@...> wrote:
>
>  Le vendredi 18 avril 2008 à 00:23 -0400, Aaron S. Hawley a écrit :
>
> > I have some patches for the cron_dump_to_disk example shipped with
>  > dump.  I submitted the first as a Sourceforge tracker item.  Stelian
>  > suggest I send the rest to this mailing list.
>  >
>
> [...]
>
>  Applied, thanks.
>
>
>  --
>  Stelian Pop <stelian@...>
>
>


-- 
Modern man suffers from a kind of poverty of the spirit which
stands in glaring contrast to his scientific and technological
abundance. We've learned to fly the air like birds, we've learned
to swim the seas as fish, yet we haven't learned to walk the
earth as brothers and sisters. -- Dr. Martin King

Re: [Dump-devel] [patch] cron_dump_to_disk example

[Stelian Pop <stelian@po...>]

Le vendredi 18 avril 2008 à 00:23 -0400, Aaron S. Hawley a écrit :
> I have some patches for the cron_dump_to_disk example shipped with
> dump.  I submitted the first as a Sourceforge tracker item.  Stelian
> suggest I send the rest to this mailing list.
> 
> Like the first patch , this only only changes the output of the
> command.  It mentions "Full backup", when in reality the script runs
> incremental backups, too.
[...]

Applied, thanks.

-- 
Stelian Pop <stelian@...>

[Dump-devel] [patch] cron_dump_to_disk example

[Aaron S. Hawley <aaron.s.hawley@gm...>]

I have some patches for the cron_dump_to_disk example shipped with
dump.  I submitted the first as a Sourceforge tracker item.  Stelian
suggest I send the rest to this mailing list.

Like the first patch , this only only changes the output of the
command.  It mentions "Full backup", when in reality the script runs
incremental backups, too.

--- backup.~1.2.~	2008-04-17 23:32:13.000000000 -0400
+++ backup	2008-04-17 23:33:08.000000000 -0400
@@ -16,9 +16,11 @@
 if [ "$1" = "full" ]; then
    DLEVEL="0"
    BTYPE="full"
+   BACKUP="Full"
 elif [ "$1" = "inc" ]; then
    DLEVEL="1"
    BTYPE="inc"
+   BACKUP="Incremental"
 else
    echo "Usage: $0 full|inc [nodumpdate]"
    exit 1
@@ -42,16 +44,16 @@

 echo
 echo "#####################################################################"
-echo "Starting backup."
+echo "Starting ${BACKUP} backup."
 echo "#####################################################################"
 echo


 #
-#  Make full system backup
+#  Make system backup
 #

-echo "### Full System Dump Backup ###"
+echo "### ${BACKUP} System Dump Backup ###"
 echo "Using backup partition: $BACKUPPART"
 echo "Filesystems to dump: $FSTODUMP"

@@ -61,8 +63,8 @@
 else
    echo "failure!"
    echo " There were problems remounting $BACKUPPART in read-write mode!"
-   echo "Aborting Full System Dump Backup."
-   echo "Aborted, done."
+   echo "Aborting ${BACKUP} System Dump Backup."
+   echo "Aborted."
    echo "-------------------------------------------------------------------------------"
    exit 1
 fi
@@ -90,13 +92,13 @@
       else
          echo "failure!"
          echo " There were problems remounting $BACKUPPART in read-only mode!"
-         echo "Aborting Full System Dump Backup."
-         echo "Aborted, done."
+         echo "Aborting ${BACKUP} System Dump Backup."
+         echo "Aborted."
          echo "-------------------------------------------------------------------------------"
          exit 1
       fi
-      echo "Aborting Full System Dump Backup."
-      echo "Aborted, done."
+      echo "Aborting ${BACKUP} System Dump Backup."
+      echo "Aborted."
       echo "-------------------------------------------------------------------------------"
       exit 1
    fi
@@ -151,13 +153,13 @@
    else
       echo "failure!"
       echo " There were problems remounting $BACKUPPART in read-only mode!"
-      echo "Aborting Full System Dump Backup."
-      echo "Aborted, done."
+      echo "Aborting ${BACKUP} System Dump Backup."
+      echo "Aborted."
       echo "-------------------------------------------------------------------------------"
       exit 1
    fi
-   echo "Aborting Full System Dump Backup."
-   echo "Aborted, done."
+   echo "Aborting ${BACKUP} System Dump Backup."
+   echo "Aborted."
    echo "-------------------------------------------------------------------------------"
    exit 1
 fi
@@ -168,12 +170,12 @@
 else
    echo "failure!"
    echo " There were problems remounting $BACKUPPART in read-only mode!"
-   echo "Aborting Full System Dump Backup."
-   echo "Aborted, done."
+   echo "Aborting ${BACKUP} System Dump Backup."
+   echo "Aborted."
    echo "-------------------------------------------------------------------------------"
    exit 1
 fi

-echo "End of Full System Dump Backup."
+echo "End of ${BACKUP} System Dump Backup."
 echo "Done."
 echo "-------------------------------------------------------------------------------"

Re: [Dump-devel] [Dump-users] Too Much Spam On The List :[

[Stelian Pop <stelian@po...>]

Le lundi 10 juillet 2006 =E0 08:53 +0300, Ivan Lezhnev, Jr. a =E9crit :
> Hello Stelian.
>=20
> Is there anything to be done to reduce spam messages on this mailing li=
st?
> I just felt like saying, it's pretty much of it in here :\.

Indeed. I do have personal spam filters on the incoming mail, so I don't
see much of this spam originating from dump's mailing lists.

But I've seen some notices from Sourceforge's mailman telling me that
several users were automatically unsubscribed because they were
rejecting mails (spams, of course).

So for now I've put both mailing lists in member-only posting mode, this
should hopefully eliminate all the spam.

Thanks for the heads-up.

Stelian.
--=20
Stelian Pop <stelian@...>

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　万が一18歳未満の方に届いた場合や、登録解除をご希望の方は
　お手数ですが下記までお願い致します。
　release_mmm@...

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