Re: recommended setup for amd64 7-STABLE with ZFS, Samba 3.2 and possibly ACLs?
On 1 okt 2008, at 12:12, Jeremy Chadwick wrote: On Wed, Oct 01, 2008 at 10:42:32AM +0200, Ben Stuyts wrote: I had to disable mmap access in dovecot, or it would coredump periodically. (mmap_disable = yes in dovecot.conf) Have you tried re-enabling mmap in dovecot on a system with a kernel build after those dates? It's been running for a day now wit mmap enabled, and it works fine now. Again thanks for pointing this out. Ben ___ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: recommended setup for amd64 7-STABLE with ZFS, Samba 3.2 and possibly ACLs?
On 1 okt 2008, at 12:12, Jeremy Chadwick wrote: On Wed, Oct 01, 2008 at 10:42:32AM +0200, Ben Stuyts wrote: I had to disable mmap access in dovecot, or it would coredump periodically. (mmap_disable = yes in dovecot.conf) I found that to be a problem only on ZFS. I don't know if that's been fixed yet. Apart from that it works great. RELENG_7 had this problem fixed in rev 1.31.2.2, dated 2008/04/26. Here's the proper file in cvsweb so you can see it yourself: http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c Have you tried re-enabling mmap in dovecot on a system with a kernel build after those dates? No, thanks for pointing that out. I have missed that. My 7-stable kernel is from July 16, so I will re-enable it and report back. Ben ___ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: recommended setup for amd64 7-STABLE with ZFS, Samba 3.2 and possibly ACLs?
On Wed, Oct 01, 2008 at 10:42:32AM +0200, Ben Stuyts wrote: > I had to disable mmap access in dovecot, or it would coredump > periodically. (mmap_disable = yes in dovecot.conf) I found that to be a > problem only on ZFS. I don't know if that's been fixed yet. Apart from > that it works great. This seems relevant to your problem: http://www.dovecot.org/list/dovecot/2008-March/029565.html HEAD had this problem fixed in rev 1.28, dated 2008/03/15. RELENG_7 had this problem fixed in rev 1.31.2.2, dated 2008/04/26. Here's the proper file in cvsweb so you can see it yourself: http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c Have you tried re-enabling mmap in dovecot on a system with a kernel build after those dates? If so, does it still randomly segfault? If so, have you reported this to [EMAIL PROTECTED] :-) -- | Jeremy Chadwickjdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB | ___ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: recommended setup for amd64 7-STABLE with ZFS, Samba 3.2 and possibly ACLs?
On 30 sep 2008, at 12:46, Jeremy Chadwick wrote: On Tue, Sep 30, 2008 at 12:08:48PM +0200, Holger Kipp wrote: - email (imap) I've had good experience with dovecot; I tend to stay away from Cyrus products (disgusting code with a history of security issues), and Courier (no interest). I had to disable mmap access in dovecot, or it would coredump periodically. (mmap_disable = yes in dovecot.conf) I found that to be a problem only on ZFS. I don't know if that's been fixed yet. Apart from that it works great. Ben ___ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: recommended setup for amd64 7-STABLE with ZFS, Samba 3.2 and possibly ACLs?
On Tue, Sep 30, 2008 at 12:51:48PM -0400, Gary Palmer wrote: > On Tue, Sep 30, 2008 at 03:46:05AM -0700, Jeremy Chadwick wrote: > > > - email (imap) > > > > I've had good experience with dovecot; I tend to stay away from Cyrus > > products (disgusting code with a history of security issues), and > > Courier (no interest). > > Also avoid /usr/ports/mail/imap-uw. Performance on imap-uw is lousy also. -- Clifton -- Clifton Royston -- [EMAIL PROTECTED] / [EMAIL PROTECTED] President - I and I Computing * http://www.iandicomputing.com/ Custom programming, network design, systems and network consulting services ___ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: recommended setup for amd64 7-STABLE with ZFS, Samba 3.2 and possibly ACLs?
On Tue, Sep 30, 2008 at 03:46:05AM -0700, Jeremy Chadwick wrote: > > - email (imap) > > I've had good experience with dovecot; I tend to stay away from Cyrus > products (disgusting code with a history of security issues), and > Courier (no interest). Also avoid /usr/ports/mail/imap-uw. I'm not sure if it can be configured to do otherwise, but by default it turns every file in the users home directory into an IMAP folder which can be opened and read. It might sound fine, but if you ever want to migrate off onto something else it becomes an issue. Regards, Gary ___ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: recommended setup for amd64 7-STABLE with ZFS, Samba 3.2 and possibly ACLs?
Holger Kipp wrote: - FreeBSD 7-Stable (amd64 with 8GB RAM) + special tuning necessary (apart from increasing kernel memory to 1 or more GB for ZFS) I haven't had much luck running ZFS under heavy load on 7-stable, I was forced to install 8-current and use the latest patch set posted by pjd. Don't jump in until you've tested it with a realistic production load. The nice thing was that 8-current didn't require any special kernel or memory tuning at all (except for disabling ZIL, but not everyone seems to have to do this). - Samba 3.2 + ACLs possible directly under ZFS? As far as I know ZFS does not support ACLs under FreeBSD at this time, and implementing it is non-trivial. - Andrew ___ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: recommended setup for amd64 7-STABLE with ZFS, Samba 3.2 and possibly ACLs?
On Tue, Sep 30, 2008 at 12:08:48PM +0200, Holger Kipp wrote: > could anyone give recommendations (or share experience) regarding > using ZFS: > > - FreeBSD 7-Stable (amd64 with 8GB RAM) > + special tuning necessary (apart from increasing kernel memory > to 1 or more GB for ZFS) Applicable loader.conf variables which should suffice: vm.kmem_size="1536M" vm.kmem_size_max="1536M" vfs.zfs.arc_min="16M" vfs.zfs.arc_max="64M" vfs.zfs.prefetch_disable="1" You can increase arc_max gradually, and performance should increase as you do so. Just be aware that too large of a value could result in kmem exhaustion on RELENG_7. There is a 2GB limit on kmem on RELENG_7 (yes, both i386 AND amd64), so do not try to increase vm.kmem_size or kmem_size_max above what I've shown there (others may have chosen something slightly higher, but picking 2048M will cause the system not to boot). If the limit is a problem, consider running CURRENT which increases this to 512GB. The prefetch setting should improve overall system performance during heavy ZFS load; many of us (including core members) have found this to be true. > - email (imap) I've had good experience with dovecot; I tend to stay away from Cyrus products (disgusting code with a history of security issues), and Courier (no interest). -- | Jeremy Chadwickjdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB | ___ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
