I create snapshots on my datasets quite frequently. My understanding of the
USED property of a snapshot is that it indicates the amount of data that was
written to the dataset after the snapshot was taken. But now I'm seeing a
snapshot with USED == 0 where there was definitely write activity
I have a bunch of sol10U8 boxes with ZFS pools, most all raidz2 8-disk
stripe. They're all supermicro-based with retail LSI cards.
I've noticed a tendency for things to go a little bonkers during the
weekly scrub (they all scrub over the weekend), and that's when I'll
lose a disk here and there.
On Saturday, August 28, 2010 06:04:17 am Mattias Pantzare wrote:
On Sat, Aug 28, 2010 at 02:54, Darin Perusich
darin.perus...@cognigencorp.com wrote:
Hello All,
I'm sure this has been discussed previously but I haven't been able to
find an answer to this. I've added another raidz1
On Saturday, August 28, 2010 12:27:36 am Edho P Arief wrote:
On Sat, Aug 28, 2010 at 7:54 AM, Darin Perusich
darin.perus...@cognigencorp.com wrote:
Hello All,
I'm sure this has been discussed previously but I haven't been able to
find an answer to this. I've added another raidz1 vdev
As I said, please by all means try it and post your benchmarks for first hour,
first day and first week and then first month. The data will be of interest to
you. On a subjective basis, if you feel that an SSD is working just fine as
your ZIL, run with it. Good luck!
--
This message posted
On Saturday, August 28, 2010 05:56:27 am Tomas Ögren wrote:
On 27 August, 2010 - Darin Perusich sent me these 2,1K bytes:
Hello All,
I'm sure this has been discussed previously but I haven't been able to
find an answer to this. I've added another raidz1 vdev to an existing
storage
This is a FAQ
Why doesn't the space that is reported by the zpool list command and the zfs
list command match?
http://hub.opensolaris.org/bin/view/Community+Group+zfs/faq
-- richard
On Aug 30, 2010, at 5:47 AM, Darin Perusich wrote:
On Saturday, August 28, 2010 06:04:17 am Mattias Pantzare
I am afraid I can't describe the exact procedure that eventually fixed the file
system as I merely observed it while Victor was logged into my system. I am
quoting from the explanation he provided but if he reads this perhaps he could
add whatever details seem pertinent.
--
This message
On Mon, 30 Aug 2010, Jeff Bacon wrote:
All of this would be ok... except THOSE ARE THE ONLY DEVICES THAT WERE
PART OF THE POOL. How can it be missing a device that didn't exist?
The device(s) in question are probably the logs you refer to here:
I can't obviously use b134 to import the
All of this would be ok... except THOSE ARE THE ONLY DEVICES THAT
WERE
PART OF THE POOL. How can it be missing a device that didn't exist?
The device(s) in question are probably the logs you refer to here:
There is a log, with a different GUID, from another pool from long ago.
It isn't
Howdy,
We're having a ZFS performance issue over here that I was hoping you guys could
help me troubleshoot. We have a ZFS pool made up of 24 disks, arranged into 7
raid-z devices of 4 disks each. We're using it as an iSCSI back-end for VMWare
and some Oracle RAC clusters.
Under normal
I've posted a post-mortem followup thread:
http://opensolaris.org/jive/thread.jspa?threadID=133472
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I have the same problem you do, ZFS performance under Solaris 10 u8 is horrible.
When you say passthrough mode, do you mean non-RAID configuration?
And if so, could you tell me how you configured it?
The best I can manage is to configure each physical drive as a RAID 0 array
then export that as
Charles,
Did you check for any HW issues reported during the hangs? fmdump -ev
and the like?
..Remco
On 8/30/10 6:02 PM, Charles J. Knipe wrote:
Howdy,
We're having a ZFS performance issue over here that I was hoping you guys could
help me troubleshoot. We have a ZFS pool made up of 24
Charles,
Is it just ZFS hanging (or what it appears to be is slowing down or
blocking) or does the whole system hang?
A couple of questions
What does iostat show during the time period of the slowdown?
What does mpstat show during the time of the slowdown?
You can look at the metadata
David,
Thanks for your reply. Answers to your questions are below.
Is it just ZFS hanging (or what it appears to be is
slowing down or
blocking) or does the whole system hang?nbsp; br
Only the ZFS storage is affected. Any attempt to write to it blocks until the
issue passes. Other than
On Mon, Aug 30 at 15:05, Ray Van Dolson wrote:
I want to fix (as much as is possible) a misalignment issue with an
X-25E that I am using for both OS and as an slog device.
This is on x86 hardware running Solaris 10U8.
Partition table looks as follows:
Part TagFlag Cylinders
On Mon, Aug 30, 2010 at 03:37:52PM -0700, Eric D. Mudama wrote:
On Mon, Aug 30 at 15:05, Ray Van Dolson wrote:
I want to fix (as much as is possible) a misalignment issue with an
X-25E that I am using for both OS and as an slog device.
This is on x86 hardware running Solaris 10U8.
comment below...
On Aug 30, 2010, at 3:42 PM, Ray Van Dolson wrote:
On Mon, Aug 30, 2010 at 03:37:52PM -0700, Eric D. Mudama wrote:
On Mon, Aug 30 at 15:05, Ray Van Dolson wrote:
I want to fix (as much as is possible) a misalignment issue with an
X-25E that I am using for both OS and as an
On Mon, Aug 30, 2010 at 03:56:42PM -0700, Richard Elling wrote:
comment below...
On Aug 30, 2010, at 3:42 PM, Ray Van Dolson wrote:
On Mon, Aug 30, 2010 at 03:37:52PM -0700, Eric D. Mudama wrote:
On Mon, Aug 30 at 15:05, Ray Van Dolson wrote:
I want to fix (as much as is possible) a
On Tue, Aug 31, 2010 at 6:03 AM, Ray Van Dolson rvandol...@esri.com wrote:
In any case -- any thoughts on whether or not I'll be helping anything
if I change my slog slice starting cylinder to be 4k aligned even
though slice 0 isn't?
some people claims that due to how zfs works, there will be
On Tue, Aug 31 at 6:12, Edho P Arief wrote:
On Tue, Aug 31, 2010 at 6:03 AM, Ray Van Dolson rvandol...@esri.com wrote:
In any case -- any thoughts on whether or not I'll be helping anything
if I change my slog slice starting cylinder to be 4k aligned even
though slice 0 isn't?
some people
On Mon, Aug 30, 2010 at 04:12:48PM -0700, Edho P Arief wrote:
On Tue, Aug 31, 2010 at 6:03 AM, Ray Van Dolson rvandol...@esri.com wrote:
In any case -- any thoughts on whether or not I'll be helping anything
if I change my slog slice starting cylinder to be 4k aligned even
though slice 0
I was wondering if anyone had a benchmarking showing this alignment
mattered on the latest SSDs. My guess is no, but I have no data.
I don't believe there can be any doubt whether a Flash based SSD (tier1
or not) is negatively affected by partition misalignment. It is intrinsic to
the
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