[Lustre-discuss] lfsck reports 'Failed to get path for fid'

[Ashley Pittman]

On Wed, 2012-08-15 at 00:39 -0700, bob lin wrote:
> Our system consists of 1 MDS and 3 OST. One of OST crashed, so I use
> e2fsck to check and repair the local error first , then I use lfsck to
> check the whole system , but lfsck reports nearly 3 millions of error :
> 
> 'Failed to get path for fid [0x7018bd:0x772726b6:0x0]'
> 
> with Hex number variates . Anyone have any idea about what is this?

lfsck is not supported on Lustre 2.x filesystems as it hasn't been
migrated to the new fid code.  There is a project which I believe is
sponsored by OpenSFS to implement an on-line equivalent but it's not due
until sometime next year.

There is some data available on the Whamcloud wiki site, I just found
this via a quick search so there may well be better documentation
elsewhere.
http://wiki.whamcloud.com/display/PUB/OI+Scrub+and+inode+Iterator
+Solution+Architecture

Ashley,