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xfs bug?

To: xfs@xxxxxxxxxxx
Subject: xfs bug?
From: Linos <info@xxxxxxxx>
Date: Mon, 07 Jan 2013 18:12:45 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0
I am hitting what seems to be a bug in one of my Linux storage layers, this is
my system:

distro: Arch Linux x86_64

cpu: Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz (4 cores)



skuda@skuda ~/Desktop $ uname -a
Linux skuda 3.7.1-426-bfs #1 SMP PREEMPT Wed Dec 26 09:56:18 CET 2012 x86_64
GNU/Linux


skuda@skuda ~/Desktop $ xfs_repair -V
xfs_repair version 3.1.8


skuda@skuda ~/Desktop $ cat /proc/mounts
rootfs / rootfs rw 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
sys /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
dev /dev devtmpfs rw,nosuid,relatime,size=8200368k,nr_inodes=2050092,mode=755 0 0
run /run tmpfs rw,nosuid,nodev,relatime,mode=755 0 0
/dev/sda3 / ext4 rw,relatime,discard,stripe=128,data=ordered 0 0
devpts /dev/pts devpts rw,relatime,mode=600,ptmxmode=000 0 0
shm /dev/shm tmpfs rw,nosuid,nodev,relatime 0 0
/dev/sda1 /boot ext4 rw,relatime,stripe=128,data=ordered 0 0
/dev/md1 /mnt/datos xfs
rw,relatime,attr2,nobarrier,inode64,logbsize=256k,sunit=512,swidth=1024,noquota 
0 0
tmpfs /tmp tmpfs rw,nosuid,nodev,relatime 0 0
binfmt /proc/sys/fs/binfmt_misc binfmt_misc rw,relatime 0 0


skuda@skuda ~/Desktop $ mdadm --detail /dev/md1
/dev/md1:
        Version : 1.2
  Creation Time : Sat Apr  2 15:14:11 2011
     Raid Level : raid5
     Array Size : 1953522688 (1863.02 GiB 2000.41 GB)
  Used Dev Size : 976761344 (931.51 GiB 1000.20 GB)
   Raid Devices : 3
  Total Devices : 3
    Persistence : Superblock is persistent

    Update Time : Mon Jan  7 17:44:38 2013
          State : clean
 Active Devices : 3
Working Devices : 3
 Failed Devices : 0
  Spare Devices : 0

         Layout : left-symmetric
     Chunk Size : 256K

           Name : sysresccd:1
           UUID : 47dddb83:9fdb7858:1d71bb15:9b35a1e0
         Events : 12873

    Number   Major   Minor   RaidDevice State
       0       8       32        0      active sync   /dev/sdc
       1       8       48        1      active sync   /dev/sdd
       3       8       16        2      active sync   /dev/sdb


skuda@skuda ~/Desktop $ mdadm -V
mdadm - v3.2.6 - 25th October 2012


The three hard drives in raid are  Western Digital RE4 WDC WD1003FBYX with write
cache enabled (yes i know i have write barries disabled in fstab).

I use this raid to backup my machine with rsnapshot than uses internally rsync,
it seems that, given sufficient pressure, i can almost always crash xfs
filesystem and my machine with it, i have attached what it's logged in
/var/log/messages.

Regards,
Miguel Angel.

Attachment: xfs_bug.txt
Description: Text document

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