Re: [zfs-discuss] Avoiding performance decrease when pool usage is over 80%
Ralf Ramge schrieb: > Thomas Liesner wrote: >> Does this mean, that if i have a pool of 7TB with one filesystem for all >> users >> with a quota of 6TB i'd be alright? > Yep. Although I *really* recommend creating individual file systems, e.g. > if you have 1,000 users on your server, I'd create 1,000 file systems with a > quota of 6 GB each. Easier to handle, more flexible to use, easier to > backup, > it allows better use of snapshots and it's easier to migrate single users > to other servers. Thanks for your recommendation, still this would not meet our needs. All the data in the production pool must be accessible to all users on this system and will be worked on by all users on this system. Hence, one shared fs for all users is perfectly fine. Thanks for all your input, Tom This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Avoiding performance decrease when pool usage is over 80%
Thomas Liesner wrote: > Does this mean, that if i have a pool of 7TB with one filesystem for all > users with a quota of 6TB i'd be alright? > Yep. Although I *really* recommend creating individual file systems, e.g. if you have 1,000 users on your server, I'd create 1,000 file systems with a quota of 6 GB each. Easier to handle, more flexible to use, easier to backup, it allows better use of snapshots and it's easier to migrate single users to other servers. > The usage of that fs would never be over 80%, right? > > Nope. Don't mix up pools and file systems. your pool of 7TB will only be filled to a maximum of 6TB, but the file system will be 100% full. which shouldn't impact your overall performance. > Like in the following example for the pool "shares" with a poolsize of 228G > an one fs with a quota of 100G: > > shares 228G28K 220G 1%/shares > shares/production 100G 8,4G92G 9%/shares/production > > This would suite me perfectly, as this would be exactly what i wanted to do ;) > > Yep, you got it. -- Ralf Ramge Senior Solaris Administrator, SCNA, SCSA Tel. +49-721-91374-3963 [EMAIL PROTECTED] - http://web.de/ 1&1 Internet AG Brauerstraße 48 76135 Karlsruhe Amtsgericht Montabaur HRB 6484 Vorstand: Henning Ahlert, Ralph Dommermuth, Matthias Ehrlich, Andreas Gauger, Thomas Gottschlich, Matthias Greve, Robert Hoffmann, Markus Huhn, Norbert Lang, Achim Weiss Aufsichtsratsvorsitzender: Michael Scheeren ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Avoiding performance decrease when pool usage is over 80%
bda wrote: > I haven't noticed this behavior when ZFS has (as recommended) the > full disk. Good to know, as i intended to use the whole disks anyway. Thanks, Tom This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Avoiding performance decrease when pool usage is over 80%
Ralf Ramge wrote: > Quotas are applied to file systems, not pools, and a such are pretty > independent from the pool size. I found it best to give every user > his/her own filesystem and applying individual quotas afterwards. Does this mean, that if i have a pool of 7TB with one filesystem for all users with a quota of 6TB i'd be alright? The usage of that fs would never be over 80%, right? Like in the following example for the pool "shares" with a poolsize of 228G an one fs with a quota of 100G: shares 228G28K 220G 1%/shares shares/production 100G 8,4G92G 9%/shares/production This would suite me perfectly, as this would be exactly what i wanted to do ;) Thanks, Tom This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Avoiding performance decrease when pool usage is over 80%
Thomas Liesner wrote: > Nobody out there who ever had problems with low diskspace? > > Okay, I found your original mail :-) Quotas are applied to file systems, not pools, and a such are pretty independent from the pool size. I found it best to give every user his/her own filesystem and applying individual quotas afterwards. -- Ralf Ramge Senior Solaris Administrator, SCNA, SCSA Tel. +49-721-91374-3963 [EMAIL PROTECTED] - http://web.de/ 1&1 Internet AG Brauerstraße 48 76135 Karlsruhe Amtsgericht Montabaur HRB 6484 Vorstand: Henning Ahlert, Ralph Dommermuth, Matthias Ehrlich, Andreas Gauger, Thomas Gottschlich, Matthias Greve, Robert Hoffmann, Markus Huhn, Norbert Lang, Achim Weiss Aufsichtsratsvorsitzender: Michael Scheeren ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Avoiding performance decrease when pool usage is over 80%
+-- | On 2008-02-12 02:40:33, Thomas Liesner wrote: | | Subject: Re: [zfs-discuss] Avoiding performance decrease when pool usage is | over 80% | | Nobody out there who ever had problems with low diskspace? Only in shared-disk setups. i.e., ZFS lives on a slice or on partition 2 with (typically) UFS slices or UFS on partition 1. I've definitely tried to keep disk util under 80% for this reason. Things become very slow as you pass that limit. I haven't noticed this behavior when ZFS has (as recommended) the full disk. -- bda Cyberpunk is dead. Long live cyberpunk. http://mirrorshades.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Avoiding performance decrease when pool usage is over 80%
Nobody out there who ever had problems with low diskspace? Regrads, Tom This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
