[Lustre-discuss] questions about an OST content

[Ashley Pittman]

On 7 Nov 2010, at 19:32, Bob Ball wrote:
> So, while we are doing the reformat, is there any way to avoid this 
> "hang" situation?

I believe there is but it escapes me at the minute.

> Is the --index=XX argument to mkfs.lustre hex, or decimal?  Seems from 
> your comment below that this must be hex?

Decimal.

> Finally, does supplying the --index even matter if we restore the files 
> below that you mention?  That seems to be what you are saying.

That's my understanding as well.

Use tunefs.lustre --print after the format to verify all the options are the same, including the index but also the flags, mount options and nodelist.  One thing I've seen people forget is to enable quotas on new (or replacement) OSTs which has the effect of disabling quotas until you are able to run quotacheck - in a live filesystem this can be effectively permanent.

Ashley.

-- 

Ashley Pittman, Bath, UK.

Padb - A parallel job inspection tool for cluster computing
http://padb.pittman.org.uk