Running 2.12.3. It doesn’t really look like that Jira issue. So I just remounted and it forced a changelog cleanup (a deregister was interrupted by an MDS crash). So that cleaned up some 20% of the total capacity of the MDT (good news) but looking at the lctl outputs, the changelog_size is growing with no changelogs defined:
[root@io011 ~]# lctl get_param mdd.brc-MDT0000.changelog_users; lctl get_param mdd.brc-MDT0000.changelog_size; sleep 10; lctl get_param mdd.brc-MDT0000.changelog_size mdd.brc-MDT0000.changelog_users= current index: 2032979833 ID index (idle seconds) mdd.brc-MDT0000.changelog_size=830310440 mdd.brc-MDT0000.changelog_size=851034456 [root@io011 ~]# Also, even now cleaned, the file system with 563,353,202 inodes is using 930GB, that strikes me as a bit strange. So even with the changelog users cleared, I suspect I’ll be back to capacity issues in another 7 days or so. > On Apr 16, 2020, at 2:12 PM, Cameron Harr <[email protected]> wrote: > > What Lustre version are you on? Does it look like this issue: > https://jira.whamcloud.com/browse/LU-12098 > > On 4/16/20 1:35 PM, John White wrote: >> We’re having some pretty intense MDT capacity growth issues on one of our >> file systems that coincide exactly with changelogs. Problem is we can’t >> seem to purge them. We can deregister them but the capacity remains. For a >> 750mil files we have close to 3TB of capacity usage on the MDT. >> >> I know there are 2 files in the root of the ldiskfs for the changelog but >> those are only a couple MB max. Are there other files in the ldiskfs >> directory structure that can be manually purged? >> _______________________________________________ >> lustre-discuss mailing list >> [email protected] >> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org > _______________________________________________ > lustre-discuss mailing list > [email protected] > http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org _______________________________________________ lustre-discuss mailing list [email protected] http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
