Hello,
im having great trouble to get aufs to work with my 2.6.15 kernel.
The system is a soc (arm based).
aufs version CVS checked out 20071003
NAS> uname -a
Linux #153 Thu Oct 4 04:51:38 CST 2007 armv4l unknown
when I compile the kernel it shows:
...
CC fs/aufs/module.o
CC fs/aufs/super.o
fs/aufs/super.c: In function `aufs_fill_super':
fs/aufs/super.c:667: warning: comparison is always false due to limited
range of data type
CC fs/aufs/sbinfo.o
fs/aufs/sbinfo.c: In function `half_refresh_plink':
fs/aufs/sbinfo.c:421: warning: comparison is always true due to limited
range of data type
CC fs/aufs/xino.o
fs/aufs/xino.c: In function `xino_init':
fs/aufs/xino.c:403: warning: comparison is always true due to limited
range of d ata type
fs/aufs/xino.c: In function `xino_set':
fs/aufs/xino.c:479: warning: comparison is always true due to limited
range of d ata type
fs/aufs/xino.c: In function `xino_def':
fs/aufs/xino.c:582: warning: comparison is always true due to limited
range of d ata type
CC fs/aufs/branch.o
fs/aufs/branch.c: In function `find_rw_br':
fs/aufs/branch.c:121: warning: comparison is always true due to limited
range of data type
....
but that should not be a big thing right?
I also added "Detect Soft Lockups" to the kernel so it is not hanging
at the mount for ever but "dumbs" some infos.
NAS> cat /proc/mounts
rootfs / rootfs rw 0 0
/dev/root / ext2 rw,nogrpid 0 0
/proc /proc proc rw,nodiratime 0 0
/sys /sys sysfs rw 0 0
usbfs /proc/bus/usb usbfs rw 0 0
/dev/hdc1 /system ext3 rw,data=ordered 0 0
/dev/hdc2 /mnt/ide3 ext3 rw,data=ordered,usrquota,grpquota 0 0
Because the system is currently using busybox 1.0 I also tried GNU mount
but it makes no differences. Also tried mount with and without -n.
The error is always the same (see the strace at the end of the mail).
My guess was that the memory used by aufs might be to much for the soc
to I reduced AUFS_BRANCH_MAX to 12:
include/linux/aufs_type.h
#ifdef CONFIG_AUFS_BRANCH_MAX_127
typedef char aufs_bindex_t;
#define AUFS_BRANCH_MAX 12
/* #define AUFS_BRANCH_MAX 127 */
still the same error.
So for today I have tosay that I wasted about 16h and did not find out a
bit :-(
So please if anybody got an idea let me know!!!
Thanks
--
flip
Ah and I tried that backport patch:
http://www.mail-archive.com/aufs-users@li.../msg00245.html
but it did not help ether.
====================================================
NAS> ../armv4l-bin/strace ../armv4l-bin/mount -t aufs -o br:./rw:/system
none ./aufs
execve("../armv4l-bin/mount", ["../armv4l-bin/mount", "-t", "aufs",
"-o", "br:./rw:/system", "none", "./aufs"], [/* 11 vars */]) = 0
uname({sys="Linux", node="NAS", ...}) = 0
brk(0) = 0x20000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or
directory)
open("/etc/ld.so.cache", O_RDONLY) = -1 ENOENT (No such file or
directory)
open("/lib/v4l/half/libblkid.so.1", O_RDONLY) = -1 ENOENT (No such file
or directory)
stat64("/lib/v4l/half", 0xbe9ec3c0) = -1 ENOENT (No such file or
directory)
open("/lib/v4l/libblkid.so.1", O_RDONLY) = -1 ENOENT (No such file or
directory)
stat64("/lib/v4l", 0xbe9ec3c0) = -1 ENOENT (No such file or
directory)
open("/lib/half/libblkid.so.1", O_RDONLY) = -1 ENOENT (No such file or
directory)
stat64("/lib/half", 0xbe9ec3c0) = -1 ENOENT (No such file or
directory)
open("/lib/libblkid.so.1", O_RDONLY) = 5
read(5, "\177ELF\1\1\1a\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\250\30\0"...,
512) = 512
fstat64(5, {st_mode=S_IFREG|0755, st_size=24112, ...}) = 0
mmap2(NULL, 54916, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 5, 0)
= 0x4001e000
mprotect(0x40023000, 34436, PROT_NONE) = 0
mmap2(0x4002b000, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 5, 0x5) = 0x4002b000
close(5) = 0
open("/lib/libuuid.so.1", O_RDONLY) = 5
read(5, "\177ELF\1\1\1a\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\374\n\0\000"...,
512) = 512
fstat64(5, {st_mode=S_IFREG|0755, st_size=11964, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0x40015000
mmap2(NULL, 42672, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 5, 0)
= 0x4002c000
mprotect(0x4002f000, 30384, PROT_NONE) = 0
mmap2(0x40036000, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 5, 0x2) = 0x40036000
close(5) = 0
open("/lib/libc.so.6", O_RDONLY) = 5
read(5, "\177ELF\1\1\1a\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\210k\1\000"...,
512) = 512
fstat64(5, {st_mode=S_IFREG|0755, st_size=1128948, ...}) = 0
mmap2(NULL, 1144972, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 5,
0) = 0x40037000
mprotect(0x40141000, 55436, PROT_NONE) = 0
mmap2(0x40148000, 20480, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 5, 0x109) = 0x40148000
mmap2(0x4014d000, 6284, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x4014d000
close(5) = 0
mprotect(0x40148000, 8192, PROT_READ) = 0
mprotect(0x4001c000, 4096, PROT_READ) = 0
brk(0) = 0x20000
brk(0x41000) = 0x41000
umask(033) = 022
open("/dev/null", O_RDWR|O_LARGEFILE) = 5
close(5) = 0
open("/etc/blkid.tab", O_RDONLY) = -1 ENOENT (No such file or
directory)
getuid32() = 0
geteuid32() = 0
lstat64("/etc/mtab", {st_mode=S_IFREG|0644, st_size=110, ...}) = 0
stat64("/sbin/mount.aufs", 0xbe9ecaac) = -1 ENOENT (No such file or
directory)
rt_sigprocmask(SIG_BLOCK, ~[TRAP SEGV], NULL, 8) = 0
mount("none", "./aufs", "aufs", MS_MGC_VAL, "br:./rw:/system"BUG: soft
lockup detected on CPU#0!
<-- The system waits at this point for ~10sec and then spits out: BUG:..
Pid: 1311, comm: mount
CPU: 0
pc : [<c0138f64>] lr : [<c013923c>] Not tainted
sp : c78f5ce0 ip : c78f5cb8 fp : c78f5cfc
r10: 00000000 r9 : c059bee0 r8 : 00000010
r7 : c754f668 r6 : c754f998 r5 : 000000ff r4 : 000000e1
r3 : 000000e1 r2 : 00000000 r1 : 000000e1 r0 : c754f998
Flags: Nzcv IRQs on FIQs on Mode SVC_32 Segment user
Control: 397F Table: 07F54000 DAC: 00000015
Function entered at [<c00249d0>] from [<c0054368>]
r4 = C78F5C98
Function entered at [<c0054304>] from [<c0041da0>]
r4 = 00000000
Function entered at [<c0041acc>] from [<c0027bcc>]
Function entered at [<c0027b18>] from [<c002d418>]
r6 = C78F5C98 r5 = 00000000 r4 = C02B64E8
Function entered at [<c002d3f0>] from [<c0023a10>]
Function entered at [<c00239c4>] from [<c0023b54>]
r8 = C0318D44 r7 = C78F5C98 r6 = 0000000F r5 = C0319050
r4 = C02B64E8
Function entered at [<c0023ad4>] from [<c0023d34>]
r7 = C78F5C98 r6 = C02B5DD0 r5 = C78F5CCC r4 = FFFFFFFF
Function entered at [<c0023cdc>] from [<c00229e4>]
r8 = 00000010 r7 = C754F668 r6 = F4800014 r5 = C78F5CCC
r4 = FFFFFFFF
Function entered at [<c0139200>] from [<c0133c84>]
r7 = 00000000 r6 = C750C000 r5 = C7F71000 r4 = 00000000
Function entered at [<c0133c4c>] from [<c01358f0>]
Function entered at [<c01357d0>] from [<c0131e94>]
Function entered at [<c0131c50>] from [<c007dda0>]
Function entered at [<c007dd48>] from [<c0132160>]
r7 = C0309208 r6 = C7F6F000 r5 = FFFFFFF4 r4 = C04F4120
Function entered at [<c0132148>] from [<c007deec>]
Function entered at [<c007de98>] from [<c0095288>]
Function entered at [<c0094e78>] from [<c0095858>]
Function entered at [<c00957c0>] from [<c0022ee4>]
r7 = 00000015 r6 = 00020210 r5 = 000201D0 r4 = 00020210
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