Hi, we have warning set in scripts watching our pools when we get above 80%, however we always have our pools running as a mirrored pair. Not that we always experience problems when we get over 80%, but in our multi-user environments, where they have their home directories and email folders stored on the network shared zfs, we can be aware that performance can drop off suddenly over that point.
having said that the biggest issue we have had in the past is when increasing the size of the zfs file system from smaller disks we forget to double-check the ashift on the drive and expand an ashift of 9 onto bigger disks, where it is more efficient to create a new pool (ashift 12) and zfs send/receive onto the new pool, then rsync the minor changes and zpool rename the pools. Sorry I have nothing scientific to give you at this point :) Jon On 22 September 2016 at 08:46, Gabriele Bulfon <gbul...@sonicle.com> wrote: > Hi, > > I have a radiz2 pool of 5 disks, a total of around 2TB of space. > Looks like when the pool free space is lower than around 300GB (including > snapshots) it starts to slow down incredibly. > Is it normal?? 300GB sounds a lot, I remember about 95% of the used space > to be a possible limit. > Anything I can trim on the pool? > > Gabriele > > ------------------------------------------------------------ > ---------------------------- > *Sonicle S.r.l. *: http://www.sonicle.com > *Music: *http://www.gabrielebulfon.com > *Quantum Mechanics : *http://www.cdbaby.com/cd/gabrielebulfon > *illumos-discuss* | Archives > <https://www.listbox.com/member/archive/182180/=now> > <https://www.listbox.com/member/archive/rss/182180/23508059-3f15f76a> | > Modify > <https://www.listbox.com/member/?&;> > Your Subscription <http://www.listbox.com> > ------------------------------------------- illumos-discuss Archives: https://www.listbox.com/member/archive/182180/=now RSS Feed: https://www.listbox.com/member/archive/rss/182180/21175430-2e6923be Modify Your Subscription: https://www.listbox.com/member/?member_id=21175430&id_secret=21175430-6a77cda4 Powered by Listbox: http://www.listbox.com
