ZFS on backup fileserver - RAM usage

Tue Oct 14 21:00:14 UTC 2008

I tried to apply this patch (zfs_20080727.patch) but I have found several 
errors (see below). Is this problem with patch or I need manualy apply these 
changes?

Patching file cddl/contrib/opensolaris/lib/libzpool/common/sys/zfs_context.h 
using Plan A...
Hunk #11 failed at 347.

Patching file sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c 
using Plan A...
Hunk #26 failed at 1053.

Patching file sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_replay.c 
using Plan A...
Hunk #18 failed at 766.

Patching file sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c using 
Plan A...
Hunk #82 failed at 3478.

Patching file sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_znode.c using 
Plan A...
Hunk #6 failed at 136.
Hunk #13 failed at 560.
Hunk #18 failed at 759.
Hunk #20 failed at 877.
Hunk #26 failed at 1336.

Patching file sys/kern/kern_jail.c using Plan A...
Hunk #1 failed at 34.

____________________________________________________
> On Oct 13, 2008, at 2:08 PM, Miroslav Lachman wrote:
> > Matt Simerson wrote:
> >> It all depends on your workload. If you work your backup serves
> >> hard  (as I do, backing up thousands of OS instances), you'll have
> >> significant reliability problems using FreeBSD 7.1 and ZFS. After
> >> a  crash that corrupted my file systems, I have moved to 8-head
> >> with  Pawel's latest patch.
> >> My backup servers have between 16 and 24 disks each. The ones with
> >> 16GB of RAM crash far less frequently than my server that has only
> >> 2GB. That one is getting upgraded soon.
> >> Matt
> >
> > I am planning to backup about 10-15 servers (mainly webservers and
> > few mailservers) and not expecting high load.
> > Did 8-current with the latest ZFS patch fixed all stability problems?
> >
> > Thanks for suggestions to both of you.
> >
> > Miroslav Lachman
>
> No, there are still stability issues under heavy load. The are just
> far less frequent under 8-current than under 7.  I couldn't keep my
> systems up for more than 2 days before switching to 8.  Running 8-head
> was better, but so far the best available configuration is 8-head with
> "the patch" applied.
>
> Matt
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