[Lustre-discuss] Disappearing OSTs

Andreas Dilger adilger at sun.com
Fri May 2 19:34:25 PDT 2008


On May 01, 2008  11:52 -0400, jrs wrote:
> oss01:/net/lmd01/space/lustre # mount -t lustre /dev/mapper/ost_oss01_lustre0102_01 /mnt/lustre/ost/ost_oss01_lustre0102_01
> mount.lustre: mount /dev/mapper/ost_oss01_lustre0102_01 at /mnt/lustre/ost/ost_oss01_lustre0102_01 failed: Invalid argument
> This may have multiple causes.
> Are the mount options correct?
> Check the syslog for more info.
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ???????

> mount.lustre: mount /dev/mapper/ost_oss01_lustre0102_01 at /mnt/lustre/ost/ost_oss01_lustre0102_01 failed: Invalid argument
> This may have multiple causes.
> Are the mount options correct?
> Check the syslog for more info.
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ????????

> # I can't just put another partition table back
> 
> (parted) mklabel
> Warning: The existing disk label on /dev/mapper/ost_oss01_lustre0102_01 will be destroyed and all data on this disk will be lost. Do you want
> to continue?
> Yes/No? yes
> New disk label type?  [gpt]? loop
> (parted) p

What is a "loop" partition table?

> Model: Linux device-mapper (dm)
> Disk /dev/mapper/ost_oss01_lustre0102_01: 6001GB

Note that anything over 2TB (I think, maybe 4TB?) needs a GPT partition table,
or the size of the device is incorrect.

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.




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