On Oct 30, 2008, at 2:55 PM, Lorenzo Perone wrote:
On 22.10.2008, at 17:38, Freddie Cash wrote:
Personally, we use it in production for a remote backup box using
ZFS and
Rsync (64-bit FreeBSD 7-Stable from August, 2x dual-core Opteron
2200s, 8
GB DDR2 RAM, 24x 500 GB SATA disks attached to two 3Ware 9650/9550
controllers as single-disks). Works beautifully, backing up 80
FreeBSD
and Debian Linux servers every night, creating snapshots with each
run.
Restoring files from an arbitrary day is as simple as navigating to
the
needed .zfs/snapshot/<snapname>/<path>/ and scping the file to
wherever.
And full system restores are as simple as "boot livecd, partition/
format
disks, run rsync".
So your system doesn't suffer panics and/or deadlocks, or you just
cope with them as "collateral damage" (which, admitted, is less of
a problem with a logging fs)?
If that's the case, would you share the details about what you're
using
on that machine (RELENG_7?, 7_0? HEAD?) and which patches
/knobs You used? I have a similar setup on a host which
backs up way fewer machines and locks up every... 3-9 weeks or so.
That host only has about 2GB ram though.
I have a system which is sort of similar in production at work.
I have the following tunables (for ZFS) set:
zfs_load="YES"
vm.kmem_size_max="1024M"
vm.kmem_size="1024M"
vfs.zfs.arc_min="16M"
vfs.zfs.arc_max="384M"
[EMAIL PROTECTED] lkowolowski 76 ]$ uname -a
FreeBSD release.pgp.com 7.1-PRERELEASE FreeBSD 7.1-PRERELEASE #0: Wed
Sep 3 12:18:57 PDT 2008 [EMAIL PROTECTED]:/usr/obj/usr/src/sys/
GENERIC amd64
[EMAIL PROTECTED] lkowolowski 77 ]$
This box has 2G of RAM, and 8.5T in ZFS spread across 8 RAID1 mirrors
in an EonStore Fiber array (direct attach).
It's been rock solid and stores all of our build collateral.
--
Louis Kowolowski [EMAIL PROTECTED]
Cryptomonkeys: http://www.cryptomonkeys.com/~louisk
Making life more interesting for people since 1977
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