[lustre-discuss] changelog filled mdt

[Colin Faber]

Hi John,

It's possible to manually purge the changelog records by removing the
associated llog files from O/ on the MDT.

-cf


On Fri, Nov 25, 2016 at 4:38 PM, John White <jwhite at lbl.gov> wrote:

> So, of course, we had an MDT fill up with changelogs during a day off.  I
> tried deregistering the changelog, that did not free up the space:
>
> [root at io010 ~]# dmesg
> Lustre: brc-MDD0000: changelog off
> Lustre: 3433:0:(mdd_device.c:1358:mdd_changelog_user_purge()) Could not
> determine changelog records to purge; rc=0
> Lustre: 3433:0:(mdd_device.c:1366:mdd_changelog_user_purge()) No entry
> for user 1.  Last changelog reference is 0 by changelog user 0
> Lustre: 3306:0:(mdd_device.c:1358:mdd_changelog_user_purge()) Could not
> determine changelog records to purge; rc=0
> Lustre: 3306:0:(mdd_device.c:1366:mdd_changelog_user_purge()) No entry
> for user 1.  Last changelog reference is 0 by changelog user 0
> [root at io010 ~]#
>
> Additionally, unmounting the mdt, forcing an e2fsck and remounting did not
> free space... Any ideas?
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