Hi all.
A quick question about the checksum error detection routines in ZFS.
Surely ZFS can decide about checksum errors in a redundant environment but
what about an non-redundant one? We connected a single RAID5 array to a
v440 as a NFS server and while doing backups and the like we see the
On Fri, 16 Mar 2007, Anton B. Rang wrote:
It's possible (if unlikely) that you are only getting checksum errors on
metadata. Since ZFS always internally mirrors its metadata, even on
non-redundant pools, it can recover from metadata corruption which does not
affect all copies. (If there is
Dear all.
I've setup the following scenario:
Galaxy 4200 running OpenSolaris build 59 as iSCSI target; remaining
diskspace of the two internal drives with a total of 90GB is used as zpool
for the two 32GB volumes exported via iSCSI
The initiator is an up to date Solaris 10 11/06 x86 box
On Fri, 23 Mar 2007, Roch - PAE wrote:
I assume the rsync is not issuing fsyncs (and it's files are
not opened O_DSYNC). If so, rsync just works against the
filesystem cache and does not commit the data to disk.
You might want to run sync(1M) after a successful rsync.
A larger rsync would
Dear Fran Casper
I'd tend to disagree with that. POSIX/SUS does not guarantee data makes
it to disk until you do an fsync() (or open the file with the right flags,
or other techniques). If an application REQUIRES that data get to disk,
it really MUST DTRT.
Indeed; want your data safe?
Richard,
Like this?
disk--zpool--zvol--iscsitarget--network--iscsiclient--zpool--filesystem--app
exactly
I'm in a way still hoping that it's a iSCSI related Problem as detecting
dead hosts in a network can be a non trivial problem and it takes quite
some time for TCP to timeout and inform
Hi Robert,
On Sun, 25 Mar 2007, Robert Milkowski wrote:
The problem is that the failure modes are very different for networks and
presumably reliable local disk connections. Hence NFS has a lot of error
handling code and provides well understood error handling semantics. Maybe
what you really
Hi all.
We currenty move out a number of iSCSI servers based on Thumpers
(x4500) running both, Solaris 10 and OpenSolaris build 90+. The
targets on the machines are based on ZVOLs. Some of the clients use those
iSCSI disks to build mirrored Zpools. As the volumes size on the x4500
can easily
Dear all.
I stumbled over an issue triggered by Samba while accessing ZFS snapshots.
As soon as a Windows client tries to open the .zfs/snapshot folder it
issues the Microsoft equivalent of ls dir, dir *. It get's translates
by Samba all the way down into stat64(/pool/.zfs/snapshot*). The
Tim
On Wed, 30 Jul 2008, Tim Haley wrote:
Ah, ignore my previous question. We believe we found the problem, and filed:
6731778 'ls *' in empty zfs snapshot directory returns EILSEQ vs. ENOENT we
get in other empty directories
Fix will likely go back today or tomorrow and be present in
Dear all
As we wanted to patch one of our iSCSI Solaris servers we had to offline
the ZFS submirrors on the clients connected to that server. The devices
connected to the second server stayed online so the pools on the clients
were still available but in degraded mode. When the server came
Miles
On Sat, 2 Aug 2008, Miles Nordin wrote:
tn == Thomas Nau [EMAIL PROTECTED] writes:
tn Nevertheless during the first hour of operation after onlining
tn we recognized numerous checksum errors on the formerly
tn offlined device. We decided to scrub the pool and after
tn
Dear all
We use iSCSI quite a lot e.g. as backend for our OpenSolaris based
fileservers. After updating the machine to b114 we ran into a strange
problem. The pool get's imported (listed by 'zpool list') but none of
it's ZFS filesystems get mounted. Exporting and reimporting manually
fixes the
Miles,
Miles Nordin wrote:
tn == Thomas Nau thomas@uni-ulm.de writes:
tn After updating the machine to b114 we ran into a strange
tn problem. The pool get's imported (listed by 'zpool list') but
tn none of it's ZFS filesystems get mounted. Exporting and
tn reimporting
Jeff,
On Tue, 28 Jul 2009, Jeff Hulen wrote:
Do any of you know how to set the default ZFS ACLs for newly created
files and folders when those files and folders are created through Samba?
I want to have all new files and folders only inherit extended
(non-trivial) ACLs that are set on the
Hi
Ive tried to find any hard information on how to install, and boot,
opensolaris from a USB stick. Ive seen a few people written a few sucessfull
stories about this, but I cant seem to get it to work.
The procedure:
Boot from LiveCD, insert USB drive, find it using `format', start
Dear all.
We use an old 48TB 4500 aka Thumper as iSCSI server based on snv_129.
As the machine has only 16GB of RAM we are wondering if it's sufficient
for holding the bigger part of the DDT in memory without affecting
performance by limiting the ARC. Any hints about scaling memory vs. disk
space
Dear all
We ran into a nasty problem the other day. One of our mirrored zpool
hosts several ZFS filesystems. After a reboot (all FS mounted at that
time an in use) the machine paniced (console output further down). After
detaching one of the mirrors the pool fortunately imported automatically
in
Thanks for the link Arne.
On 06/13/2010 03:57 PM, Arne Jansen wrote:
Thomas Nau wrote:
Dear all
We ran into a nasty problem the other day. One of our mirrored zpool
hosts several ZFS filesystems. After a reboot (all FS mounted at that
time an in use) the machine paniced (console output
Arne,
On 06/13/2010 03:57 PM, Arne Jansen wrote:
Thomas Nau wrote:
Dear all
We ran into a nasty problem the other day. One of our mirrored zpool
hosts several ZFS filesystems. After a reboot (all FS mounted at that
time an in use) the machine paniced (console output further down). After
Dear all
Sorry if it's kind of off-topic for the list but after talking
to lots of vendors I'm running out of ideas...
We are looking for JBOD systems which
(1) hold 20+ 3.3 SATA drives
(2) are rack mountable
(3) have all the nive hot-swap stuff
(4) allow 2 hosts to connect via SAS (4+ lines
Thanks Jim and all the other who have replied so far
On 05/30/2011 11:37 AM, Jim Klimov wrote:
...
So if your application can live with the unit of failover being a bunch of 21
or 24 disks -
that might be a way to go. However each head would only have one connection to
each backplane,
Richard
On 07/04/2011 03:58 PM, Richard Elling wrote:
On Jul 4, 2011, at 6:42 AM, Lanky Doodle wrote:
Hiya,
I''ve been doing a lot of research surrounding this and ZFS, including some
posts on here, though I am still left scratching my head.
I am planning on using slow RPM drives for a
Dear all.
We finally got all the parts for our new fileserver following several
recommendations we got over this list. We use
Dell R715, 96GB RAM, dual 8-core Opterons
1 10GE Intel dual-port NIC
2 LSI 9205-8e SAS controllers
2 DataON DNS-1600 JBOD chassis
46 Seagate constellation SAS drives
2
Tim
the client is identical as the server but no SAS drives attached.
Also right now only one 1gbit Intel NIC Is available
Thomas
Am 18.08.2011 um 17:49 schrieb Tim Cook t...@cook.ms:
What are the specs on the client?
On Aug 18, 2011 10:28 AM, Thomas Nau thomas@uni-ulm.de wrote:
Dear
Hi Bob
I don't know what the request pattern from filebench looks like but it seems
like your ZEUS RAM devices are not keeping up or
else many requests are bypassing the ZEUS RAM devices.
Note that very large synchronous writes will bypass your ZEUS RAM device and
go directly to a log in
Dear all
We use a STEC ZeusRAM as a log device for a 200TB RAID-Z2 pool.
As they are supposed to be read only after a crash or when booting and
those nice things are pretty expensive I'm wondering if mirroring
the log devices is a must / highly recommended
Thomas
Hi Grant
On 01/06/2012 04:50 PM, Richard Elling wrote:
Hi Grant,
On Jan 4, 2012, at 2:59 PM, grant lowe wrote:
Hi all,
I've got a solaris 10 running 9/10 on a T3. It's an oracle box with 128GB
memory RIght now oracle . I've been trying to load test the box with
bonnie++. I can seem
Dear all
We have two JBODs with 20 or 21 drives available per JBOD hooked up
to a server. We are considering the following setups:
RAIDZ2 made of 4 drives
RAIDZ2 made of 6 drives
The first option wastes more disk space but can survive a JBOD failure
whereas the second is more space effective but
Bob,
On 01/31/2012 09:54 PM, Bob Friesenhahn wrote:
On Tue, 31 Jan 2012, Thomas Nau wrote:
Dear all
We have two JBODs with 20 or 21 drives available per JBOD hooked up
to a server. We are considering the following setups:
RAIDZ2 made of 4 drives
RAIDZ2 made of 6 drives
The first
Dear all
I'm about to answer my own question with some really useful hints
from Steve, thanks for that!!!
On 03/02/2012 07:43 AM, Thomas Nau wrote:
Dear all
I asked before but without much feedback. As the issue
is persistent I want to give it another try. We disabled
panicing
Jamie
We ran Into the same and had to migrate the pool while imported read-only. On
top we were adviced to NOT use an L2ARC. Maybe you should consider that as well
Thomas
Am 12.12.2012 um 19:21 schrieb Jamie Krier jamie.kr...@gmail.com:
I've hit this bug on four of my Solaris 11 servers.
Dear all
I've a question concerning possible performance tuning for both iSCSI access
and replicating a ZVOL through zfs send/receive. We export ZVOLs with the
default volblocksize of 8k to a bunch of Citrix Xen Servers through iSCSI.
The pool is made of SAS2 disks (11 x 3-way mirrored) plus
Thanks for all the answers more inline)
On 01/18/2013 02:42 AM, Richard Elling wrote:
On Jan 17, 2013, at 7:04 AM, Bob Friesenhahn bfrie...@simple.dallas.tx.us
mailto:bfrie...@simple.dallas.tx.us wrote:
On Wed, 16 Jan 2013, Thomas Nau wrote:
Dear all
I've a question concerning possible
Darren
On 02/12/2013 11:25 AM, Darren J Moffat wrote:
On 02/10/13 12:01, Koopmann, Jan-Peter wrote:
Why should it?
Unless you do a shrink on the vmdk and use a zfs variant with scsi
unmap support (I believe currently only Nexenta but correct me if I am
wrong) the blocks will not be freed,
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