Yes expanding the pool with another mirrored pair of disks will add inodes.
You can also recover using the ZFS slop space temporarily. https://wiki.lustre.org/ZFS_MDT_ENOSPC_Recovery On Thu, Sep 15, 2022 at 4:04 PM <[email protected]> wrote: > > Message: 1 > Date: Wed, 14 Sep 2022 14:22:33 -0800 > From: Liam Forbes <[email protected]> > To: [email protected] > Cc: Kevin Galloway <[email protected]>, John Mitchell > <[email protected]>, Liam Forbes <[email protected]> > Subject: [lustre-discuss] ran out of MDT inodes > Message-ID: > <CACXvBArq1kfb7-oQ+LZ_KdsPLk-psJZZjsLBL= > [email protected]> > Content-Type: text/plain; charset="utf-8" > > Today, in our lustre 2.10.3 filesystem, the MDT ran out of inodes. We are > using ZFS as the backing filesystem. > > [loforbes@mds02 ~]$ df -i -t lustre > Filesystem Inodes IUsed IFree IUse% Mounted on > digdug-meta/lustre2-mgt-mdt 83703636 83703636 0 100% > /mnt/lustre/local/lustre2-MDT0000 > [loforbes@mds02 ~]$ sudo zpool list -v > NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT > digdug-meta 744G 721G 23.2G - 86% 96% 1.00x ONLINE - > mirror 372G 368G 4.25G - 84% 98% > scsi-35000c5003017156b - - - - - - > scsi-35000c500301715e7 - - - - - - > mirror 372G 353G 19.0G - 88% 94% > scsi-35000c5003017155f - - - - - - > scsi-35000c500301715a7 - - - - - - > > When we try to delete files, we get the error message: > rm: cannot remove XXXXX: No space left on device > > Is there a way to unlink files and free up inodes? > > Is it possible to expand the existing zpool and filesystem for the MDT? > > Is it possible to do a backup of just our MDT? If so, how? > > -- > Regards, > -liam > > -There are uncountably more irrational fears than rational ones. -P. Dolan > Liam Forbes [email protected] ph: > 907.450.8618 > UAF GI Research Computing Systems Manager > https://calendly.com/ualoforbes/30min > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.lustre.org/pipermail/lustre-discuss-lustre.org/attachments/20220914/5e9b7fde/attachment-0001.htm > > > >
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