[lustre-discuss] reasonable runtime for e2fsck

[Dilger, Andreas]

Running "e2fsck --mdsdb" will take _much_ longer than a regular e2fsck, because the mdsdb database is sparsely written.  I would recommend not running the old e2fsprogs-based lfsck, since Lustre 2.5 has enough functionality to repair the Lustre-specific parts of the local filesystem (after a regular e2fsck), and Lustre 2.7 will also fix the MDT-OST consistency (orphan objects and dangling MDT layout references).

Cheers, Andreas
--
Andreas Dilger
Lustre Principal Architect
Intel High Performance Data Division

On 2016/08/11, 20:19, "lustre-discuss on behalf of E.S. Rosenberg" <lustre-discuss-bounces at lists.lustre.org<mailto:lustre-discuss-bounces at lists.lustre.org> on behalf of esr+lustre at mail.hebrew.edu<mailto:esr+lustre at mail.hebrew.edu>> wrote:

Sorry about spamming the list but I realize it may be better that subjects be split into threads....
I started e2fsck --mdsdb 6 hours ago on an MDT that is 1T in size, am I being unreasonable if I think it should have been done by now?
What type of runtimes have you seen?
I shudder to think how long this is going to take on the OSTs if this is normal runtime....

Thanks,
Eli
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