In my case we do not have the bandwidth to do a FULL send/recv, it
would take weeks.
I'm not 100% sure how the data would end up (whether de-fragmentation
would be achieved), but could you do a rend/receive to a new
filesystem on the same host?
You could, but doing so on the same pool
On Thu, Mar 24, 2011 at 7:07 AM, Edward Ned Harvey
opensolarisisdeadlongliveopensola...@nedharvey.com wrote:
When you have a backup server, which does nothing but zfs receive, that's
probably your best case scenario. Because the data is as nonvolatile as
possible. But indeed, because all the
On 03/29/11 02:52 AM, Paul Kraus wrote:
On Thu, Mar 24, 2011 at 7:07 AM, Edward Ned Harvey
opensolarisisdeadlongliveopensola...@nedharvey.com wrote:
When you have a backup server, which does nothing but zfs receive, that's
probably your best case scenario. Because the data is as nonvolatile
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Giovanni Tirloni
We've production servers with 9 vdev's (mirrored) doing `zfs send`
daily to backup servers with with 7 vdev's (each 3-disk raidz1). Some
backup servers that receive datasets
On Mon, Mar 21, 2011 at 3:45 PM, Roy Sigurd Karlsbakk r...@karlsbakk.net
wrote:
Our main backups storage server has 3x 8-drive raidz2 vdevs. Was
replacing the 500 GB drives in one vdev with 1 TB drives. The last 2
drives took just under 300 hours each. :( The first couple drives
took
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Richard Elling
How many times do we have to rehash this? The speed of resilver is
dependent on the amount of data, the distribution of data on the
resilvering
device, speed of the
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Edward Ned Harvey
it depends on the total number of used blocks that must
be resilvered on the resilvering device, multiplied by the access time for
the resilvering device.
It is a safe
On Sun, Mar 20, 2011 at 7:20 PM, Richard Elling
richard.ell...@gmail.com wrote:
On Mar 20, 2011, at 3:02 PM, Ian Collins wrote:
On 03/20/11 08:57 PM, Ian Collins wrote:
Has anyone seen a resilver longer than this for a 500G drive in a riadz2
vdev?
scrub: resilver completed after 169h25m
On Sun, Mar 20, 2011 at 12:57 AM, Ian Collins i...@ianshome.com wrote:
Has anyone seen a resilver longer than this for a 500G drive in a riadz2
vdev?
scrub: resilver completed after 169h25m with 0 errors on Sun Mar 20 19:57:37
2011
c0t0d0 ONLINE 0 0 0 769G
The 30+ second latency I see on this system during a resilver renders
it pretty useless as a staging server (lots of small snapshots).
I've seen similar numbers on a system during resilver, without L2ARC/SLOG.
Adding L2ARC/SLOG made the system work quite well during resilver/scrub, but
Our main backups storage server has 3x 8-drive raidz2 vdevs. Was
replacing the 500 GB drives in one vdev with 1 TB drives. The last 2
drives took just under 300 hours each. :( The first couple drives
took approx 150 hours each, and then it just started taking longer and
longer for each drive.
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Paul Kraus
Is resilver time related to the amount of data (TBs) or the number
of objects (file + directory counts) ? I have seen zpools with lots of
data in very few files resilver
On 03/22/11 10:39 AM, Edward Ned Harvey wrote:
So the conclusion to draw is:
Yes, there are situations where ZFS resilver is a strength, and limited by
serial throughput. But for what I call typical usage patterns, it's a
weakness, and it's dramatically much worse than resilvering the whole
On Mar 21, 2011, at 5:09 AM, Edward Ned Harvey wrote:
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Richard Elling
How many times do we have to rehash this? The speed of resilver is
dependent on the amount of data, the distribution of
On Mar 21, 2011, at 5:32 AM, Edward Ned Harvey wrote:
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Edward Ned Harvey
it depends on the total number of used blocks that must
be resilvered on the resilvering device, multiplied by the
On 3/21/2011 3:25 PM, Richard Elling wrote:
On Mar 21, 2011, at 5:09 AM, Edward Ned Harvey wrote:
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Richard Elling
How many times do we have to rehash this? The speed of resilver is
dependent on
From: Richard Elling [mailto:richard.ell...@gmail.com]
There is no direct correlation between the number of blocks and resilver
time.
Incorrect.
Although there are possibly some cases where you could be bandwidth limited,
it's certainly not true in general.
If Richard were correct, then a
[richard tries pushing the rope one more time]
On Mar 21, 2011, at 8:40 PM, Edward Ned Harvey wrote:
From: Richard Elling [mailto:richard.ell...@gmail.com]
There is no direct correlation between the number of blocks and resilver
time.
Incorrect.
Although there are possibly some cases
Has anyone seen a resilver longer than this for a 500G drive in a
riadz2 vdev?
scrub: resilver completed after 169h25m with 0 errors on Sun Mar 20
19:57:37 2011
c0t0d0 ONLINE 0 0 0 769G resilvered
and I told the client it would take 3 to 4 days!
:)
--
Ian.
Has anyone seen a resilver longer than this for a 500G drive in a
riadz2 vdev?
scrub: resilver completed after 169h25m with 0 errors on Sun Mar 20
19:57:37 2011
c0t0d0 ONLINE 0 0 0 769G resilvered
and I told the client it would take 3 to 4 days!
It all depends on the number of drives in
769G resilvered on a 500G drive? I'm guessing there was a whole bunch of
activity (and probably snapshot creation) happening alongside the resilver.
On 20 March 2011 18:57, Ian Collins i...@ianshome.com wrote:
Has anyone seen a resilver longer than this for a 500G drive in a riadz2
vdev?
It all depends on the number of drives in the VDEV(s), traffic
patterns during resilver, speed VDEV fill, of drives etc. Still,
close to 6 days is a lot. Can you detail your configuration?
How many times do we have to rehash this? The speed of resilver is
dependent on the amount of data,
On Mar 20, 2011, at 14:24, Roy Sigurd Karlsbakk wrote:
It all depends on the number of drives in the VDEV(s), traffic
patterns during resilver, speed VDEV fill, of drives etc. Still,
close to 6 days is a lot. Can you detail your configuration?
How many times do we have to rehash this? The
I think maybe the number of drives in the vdev perhaps come into
play because that when people have a lot of disks, they often put them
into RAIDZ[123] configurations. So it's just a matter of confusing the
(IOps limiting) configuration with the fact that one may have many
disks.
My answer
On Mar 20, 2011, at 12:48 PM, David Magda wrote:
On Mar 20, 2011, at 14:24, Roy Sigurd Karlsbakk wrote:
It all depends on the number of drives in the VDEV(s), traffic
patterns during resilver, speed VDEV fill, of drives etc. Still,
close to 6 days is a lot. Can you detail your configuration?
On 03/20/11 08:57 PM, Ian Collins wrote:
Has anyone seen a resilver longer than this for a 500G drive in a
riadz2 vdev?
scrub: resilver completed after 169h25m with 0 errors on Sun Mar 20
19:57:37 2011
c0t0d0 ONLINE 0 0 0 769G resilvered
I didn't intend to
On Mar 20, 2011, at 18:02, Ian Collins wrote:
I didn't intend to start an argument, I was just very surprised the resilver
took so long.
ZFS is a relatively young file system, and it does a lot of things differently
than what has been done in the past. Personally I think arguments / debates
On Mar 20, 2011, at 3:02 PM, Ian Collins wrote:
On 03/20/11 08:57 PM, Ian Collins wrote:
Has anyone seen a resilver longer than this for a 500G drive in a riadz2
vdev?
scrub: resilver completed after 169h25m with 0 errors on Sun Mar 20 19:57:37
2011
c0t0d0 ONLINE 0
On 03/21/11 12:20 PM, Richard Elling wrote:
On Mar 20, 2011, at 3:02 PM, Ian Collins wrote:
On 03/20/11 08:57 PM, Ian Collins wrote:
Has anyone seen a resilver longer than this for a 500G drive in a riadz2 vdev?
scrub: resilver completed after 169h25m with 0 errors on Sun Mar 20 19:57:37
On 3/20/2011 2:23 PM, Richard Elling wrote:
On Mar 20, 2011, at 12:48 PM, David Magda wrote:
On Mar 20, 2011, at 14:24, Roy Sigurd Karlsbakk wrote:
It all depends on the number of drives in the VDEV(s), traffic
patterns during resilver, speed VDEV fill, of drives etc. Still,
close to 6 days
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