[Lustre-discuss] upgrading to lustre 1.6.6

[Andreas Dilger]

On Feb 21, 2009  01:24 +0900, Shigeru Sugimoto wrote:
> I am trying to upgrade to Lustre 1.6.6 and having a problem. Our system
> is using one OSS and one MGS, the number of OST is 24.
> 
> So far, it seems I have succeeded to mkfs.lustre to the 24 OST(from
> /dev/sda, sdb.......sdx) and succeeded to mount.lustre those to /mnt/ost0
> ost1.....ost23.

You will have severe memory problems under load with this many OSTs.
Is there a reason not to make larger OSTs (up to 8TB is supported).

> However, MGS doesn't seem to be working properly.
> After mount.lustre /dev/VolGroup00/mdt /mnt/mdt/, checking
> /proc/fs/lustre/mds/user-MDT0000/recovery_status
> returns "status: INACTIVE".

This is not harmful, it just means recovery was never run on this OST,
and that is normal if it was shut down cleanly.



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