[Linux-cluster] error messages while use fsck.gfs2

[Sherlock Zhang]

Hi Bob
    Thank you for your advice,
I had dump the FS head.
#dd if=/dev/sdc of=/home/disk.dump bs=4096 count=1000
#file disk.dump
disk.dump: Linux GFS2 Filesystem (blocksize 4096, lockproto fsck_nolock)
and I also try
# gfs2_tool sb /dev/sdc all
  mh_magic = 0x01161970
  mh_type = 1
  mh_format = 100
  sb_fs_format = 1801
  sb_multihost_format = 1900
  sb_bsize = 4096
  sb_bsize_shift = 12
  no_formal_ino = 2
  no_addr = 35
  no_formal_ino = 1
  no_addr = 34
  sb_lockproto = fsck_nolock
  sb_locktable =
  uuid = 5a8234ba-ad89-f87a-c98b-807e307085fe

then try to mount the storage
#mount.gfs2 -o  lockproto=fsck_nolock /dev/sdc /opt
error mounting /dev/sdc on /opt: No such file or directory

#dmesg
GFS2: can't find protocol fsck_nolock

Is this mean the filesystem structure still ok?
why should dmesg will report can't find fsck_nolock protocol?
Did I miss something?

Thank you

On Thu, Nov 10, 2011 at 10:45 PM, Bob Peterson <rpeterso at redhat.com> wrote:

> ----- Original Message -----
> | Hi
> |     The host use UIT's CT1600 and UIT's 2000E IP-SAN storage (single
> |     LUN
> | 10TB)
> | last time the switch got a  power failure during the data backup (the
> | iSCSI
> | connection is lost)
> | after the iSCSI reconneted, the filesystem was unable to use.
> |
> | So I try  use fsck.gfs2 to fix the filesystem problem.but there is a
> | error
> | message and I got no idea with this error.
> |
> | [root at Toureg ~]# fsck.gfs2 /dev/sdc
> | Initializing fsck
> | The system master directory seems to be destroyed.
> | Okay to rebuild it? (y/n)y
> | Trying to rebuild the master directory.
> | libgfs2.h: out of space
>
> Hi,
>
> The only time I've seen this error before is when the device
> was badly damaged. I don't know how that one was damaged, but
> it looked like the RAID controller had completely rearranged
> the blocks on the media.
>
> If you are a Red Hat customer, please call the Red Hat support
> number and ask for help.
>
> A number of things can cause this message:
> 1. Scrambled blocks on media
> 2. A disk failed
> 3. Running fsck on the wrong device. For example, if /dev/sdc
>   is partitioned (should have specified /dev/sdc1?) or if
>   /dev/sdc is supposed to be part of an LVM2 logical volume,
>   (should you have specified /dev/volgrp/logvol (for example)
>   rather than /dev/sdc?
>
> Either way, something's seriously wrong with it. If it were my
> device, I'd dump the first few MB to a file and see what's there,
> compared to what should be there.
>
> Regards,
>
> Bob Peterson
> Red Hat File Systems
>
> --
> Linux-cluster mailing list
> Linux-cluster at redhat.com
> https://www.redhat.com/mailman/listinfo/linux-cluster
>



-- 
 Thank you

Best regards
*************************************************************************************************
Sherlock Zhang  张 国荣
Technical Supporter East China Technical Support Department

Address: Room 23E No. 728 West Yanan Road Changning DC. Shanghai China
Post code: 20050

Office: +86 021 62253300 ext. 803
Mobile: +86 133 8600 6305
www.uit.com.cn


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