[Lustre-discuss] Problems running e2fsck on oss

[Arne Brutschy]

Hey,

we're running Lustre 1.8.5 on CentOS 5.3 (rocks). It seems that we have
a corrupted file system, so I followed the steps given in the manual:
http://wiki.lustre.org/manual/LustreManual18_HTML/LustreRecovery.html#50651260_pgfId-1291230

Steps 1-4 run smoothly. I shared the files created on the mds per NFS.

  $ ls -l ls /mnt/     
  total 14164076
  -rw-r--r-- 1 root root 46471111680 Jun  6 17:51 mdsdb
  -rw-r--r-- 1 root root      106496 Jun  6 16:49 mdsdb.mdshdr
  drwxrwxrwx 6 root root        4096 Jun  6 18:01 osts

Step 5 fails on all osts:

  $ e2fsck -v --mdsdb /mnt/mdsdb --ostdb /mnt/osts/ost2/ost2db /dev/sda3
  e2fsck 1.41.10.sun2 (24-Feb-2010) lustre-OST0002 lustre database
  creation, check forced. Pass 1: Checking inodes, blocks, and sizes
  Pass 2: Checking directory structure
  Pass 3: Checking directory connectivity
  Pass 4: Checking reference counts
  Pass 5: Checking group summary information
  Pass 6: Acquiring information for lfsck
  /mnt/mdsdb:mdshdr
  : Permission denied
  failure to open database mdshdr: Input/output error
  e2fsck: aborted

I changed permissions to 666, and tried to create a link mdsdb:mdshdr
that points to mdsdb.mdshdr (I figured this might be a bug as the file
indicated above has a ':' instead of a '.'). Neither worked.

Any ideas?

Cheers,
Arne




-- 
Arne Brutschy
Ph.D. Student                    Email    arne.brutschy(AT)ulb.ac.be
IRIDIA CP 194/6                  Web      iridia.ulb.ac.be/~abrutschy
Universite' Libre de Bruxelles   Tel      +32 2 650 2273
Avenue Franklin Roosevelt 50     Fax      +32 2 650 2715
1050 Bruxelles, Belgium          (Tel and Fax both IRIDIA secretary)