[CentOS-devel] XFS module ... big troubles

Gernot Stocker gernot.stocker at tugraz.at
Tue Apr 24 09:00:10 UTC 2007


On Tuesday 24 April 2007, Daniel de Kok wrote:
> 
> Does the kernel output show any errors? 
>

Apr 23 20:52:39 sz-linux02 kernel: Filesystem "md10": Disabling barriers, not supported by the underlying device
Apr 23 20:52:39 sz-linux02 kernel: XFS mounting filesystem md10
Apr 23 20:52:39 sz-linux02 kernel: SELinux: initialized (dev md10, type xfs), uses xattr

Not really, just the regular mounting message....

> It may also be useful to know if the filesystem is on some pseudo-device like LVM or kernel RAID.

You are right! I forgot to mention that the underlying disk volume is a software mirror (raid 1) which is in 
sync:

mdadm --detail /dev/md10
/dev/md10:
        Version : 00.90.03
  Creation Time : Fri Apr 20 00:48:23 2007
     Raid Level : raid1
     Array Size : 57062784 (54.42 GiB 58.43 GB)
    Device Size : 57062784 (54.42 GiB 58.43 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 10
    Persistence : Superblock is persistent

    Update Time : Tue Apr 24 10:47:35 2007
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0

           UUID : 41c62a64:f68bee1f:ac11033d:e2be7f0c
         Events : 0.120

    Number   Major   Minor   RaidDevice State
       0       8        4        0      active sync   /dev/sda4
       1       8       20        1      active sync   /dev/sdb4

cat /proc/mdstat
Personalities : [raid1]
md10 : active raid1 sdb4[1] sda4[0]
      57062784 blocks [2/2] [UU]

That's a diference to the old installation. There we had just one single disk and 
in the course of the new installation we added a second disk for mirroring. And 
just to make it clear... we have already completely deleted the images mirror 
and have rebuilt it from scratch with newfs.xfs etc.

Thanks,
    Gernot
-- 
Gernot Stocker,
Institute for Genomics and Bioinformatics(IGB)
Petersgasse 14, 8010 Graz, Austria
Tel.: ++43 316 873 5345
http://genome.tugraz.at
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