Re: [lustre-discuss] ZFS not freeing disk space

"Deleting Files Doesn't Free Space" https://github.com/zfsonlinux/zfs/issues/1188 "Deleting Files Doesn't Free Space, unless I unmount the filesystem" https://github.com/zfsonlinux/zfs/issues/1548 There are more references listed on pages above. Since 0.6.3 the possible work around can

Re: [lustre-discuss] ZFS not freeing disk space

Hi Thomas, On Wed, Aug 10, 2016 at 10:57 AM, Thomas Roth wrote: > one of our ((Lustre 2.5.3, ZFS 0.6.3) OSTs got filled up to >90%, so I > deactivated it and am now migrating files off of that OST. > > But when I do either 'lfs df' or 'df' on the OSS, and don't see any change > in

Re: [lustre-discuss] ZFS not freeing disk space

It can be zfs snapshot holding space on ost. Or, it can be zfs issue, zfs not releasing space until reboot. Check zfs bugs on zfs wiki. Lustre shows change in OST used space right away. zfs 0.6.3 is pretty old. We are using 0.6.4.1 with lustre 2.5.3. (there is zfs 0.6.4.2) You may need to

Re: [lustre-discuss] ZFS not freeing disk space

It is my understanding that when you set the OST deactivated, they you also don't get updates on the used space either, as of some recent version of Lustre. It has never been clear to me though if a simple re-activation is needed to run the logs, or if the reboot is required, once it is