[Lustre-discuss] OST crash with group descriptors

[Brian J. Murrell]

On Fri, 2009-03-13 at 11:03 +0800, thhsieh wrote:
> Hello,

Hi,

> Now, we have to shutdown the lustre filesystem completely (umount clients,
> OSTs), and remount the OST we want to check with ldiskfs:

In fact, to do such surgery, you don't need to shut down the filesystem.
You can take an OST offline and the clients will pause (for failover
configuration) for it or EIO (for failout) while you are working on it
and all will resume when you start it back up.

b.

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