[Lustre-discuss] OST 1.6.6->1.8.3 upgrade

Nathan Rutman nathan.rutman at oracle.com
Tue Jul 27 09:41:24 PDT 2010


On Jul 27, 2010, at 5:02 AM, Heiko Schröter wrote:

> Hello,
> 
> 
> running tunefs.lustre during the upgrade, do i have to add the "--param" option when it has been used during the creation fo the fs ?
> 
> i.e. lustre fs during creation: 
> mkfs.lustre --param="failover.mode=failout" --fsname lustre --ost --mkfsoptions='-i 2097152 -E stride=16 -b 4096' --mgsnode=mds1 at tcp0 /dev/sdb
> now upgrading:
> tunefs.lustre --param="failover.mode=failout" --fsname lustre --ost --mgsnode=mds1 at tcp0 /dev/sdb

You actually don't need to run tunefs unless you are changing something.  Additionally, all parameters should be "sticky" across tunefs; you can see the current settings with 'tunefs --print', add new parameters with 'tunefs --param', and erase all old params with 'tunefs --erase'.



> A "-writeconf" is not intended during the upgrade.
In that case, most tunefs changes won't impact anything anyhow :)

> How long will it take (approx) to "tunefs" an 8TB OST partition ?
No time.  There's nothing that is done to the disk format during tunefs, just the modification of a single config file.

> 
> Thanks and Regards
> Heiko
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