Re: [Moosefs-users] About MFS for SNAPSHOST question

[Michal B. <mic...@ge...>]

Hi!

 

We are not sure what problem you have in 1. It may happen under some conditions that “mfsappendchunks” would work exactly the same as “mfsmakesnapshot”.

 

In the second problem operation “read” talking to the master server gets broken. How often do you get this error? Is it regular or visible only while doing certain operations?

 

 

Kind regards

Michał Borychowski 

MooseFS Support Manager

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Gemius S.A.

ul. Wołoska 7, 02-672 Warszawa

Budynek MARS, klatka D

Tel.: +4822 874-41-00

Fax : +4822 874-41-01

 

From: 周韬 [mailto:zho...@16...] 
Sent: Thursday, June 30, 2011 7:58 AM
To: moo...@li...
Subject: [Moosefs-users] About MFS for SNAPSHOST question

 

Hello wirter,I'm teddy! I study MFS now,have some question want to ask you!

MooseFS  version:1.6.20-2

Fuse version:8.5

All operating system are CentOS 5.5_64

All file system are ext3

1、When I use snapshost and take a snapshost,the snapshost size is same as source directory or file,next is my step:

[root@localhost floder]# du -sh u.img 
20M     u.img
[root@localhost floder]# /usr/local/mfs/bin/mfsappendchunks u.img.bak u.img 
[root@localhost floder]# ll
total 2114278
-rw-r--r-- 1 root root     654246 Jun 30 01:14 mfs-1.6.20-2.tar.gz
-rw-r--r-- 1 root root  524288000 Jun 30 02:27 teddy500M
-rw-r--r-- 1 root root 1073741824 Jun 30 02:18 test1G
-rw-r--r-- 1 root root  524288000 Jun 30 02:19 test500M
-rw-r--r-- 1 root root   20971520 Jun 29 10:13 u.img
-rw-r--r-- 1 root root   20971520 Jun 30 18:57 u.img.bak
-rw-r--r-- 1 root root     105311 Jun 30 01:14 zlib-devel-1.2.3-4.el5.x86_64.rpm
[root@localhost floder]# du -sh u.img.bak 
20M     u.img.bak

use the mfsmakesnapshost result is same the mfsappendchunks!

2、When i mount at the client,have some wong messages at the system log,what is the mean?but i can use as normal;

[root@localhost floder]# tail -f /var/log/messages 
Jun 30 02:21:37 localhost avahi-daemon[2747]: Server startup complete. Host name is localhost-6.local. Local service cookie is 475828928.
Jun 30 02:22:16 localhost mfsmount[2864]: master: tcp recv error: EINTR (Interrupted system call) (1)
Jun 30 02:22:16 localhost mfsmount[2864]: registered to master
Jun 30 02:22:16 localhost mfsmount[2864]: master: tcp recv error: EINTR (Interrupted system call) (1)
Jun 30 02:22:16 localhost mfsmount[2864]: registered to master
Jun 30 02:22:37 localhost mfsmount[2875]: master: tcp recv error: EINTR (Interrupted system call) (1)
Jun 30 02:22:37 localhost mfsmount[2875]: registered to master
Jun 30 02:22:37 localhost mfsmount[2875]: master: tcp recv error: EINTR (Interrupted system call) (1)
Jun 30 02:22:37 localhost mfsmount[2875]: registered to master

Jun 30 02:33:33 localhost restorecond: Will not restore a file with more than one hard link (/etc/resolv.conf) Invalid argument

 

waitting for you answer on line!!!

Best wish for you!