On Dec 14, 2007 1:12 AM, can you guess? <[EMAIL PROTECTED]> wrote:
> > yes. far rarer and yet home users still see them.
>
> I'd need to see evidence of that for current hardware.
What would constitute "evidence"? Do anecdotal tales from home users
qualify? I have two disks (and one controller!)
...
> > Now it seems to me that without parity/replication,
> there's not much
> > point in doing the scrubbing, because you could
> just wait for the error
> > to be detected when someone tries to read the data
> for real. It's
> > only if you can repair such an error (before the
> data is neede
> On December 13, 2007 12:51:55 PM -0800 "can you
> guess?"
> <[EMAIL PROTECTED]> wrote:
> > ...
> >
> >> when the difference between an unrecoverable
> single
> >> bit error is not just
> >> 1 bit but the entire file, or corruption of an
> entire
> >> database row (etc),
> >> those small and infr
Shawn Ferry wrote:
> Jorgen,
>
> You may want to try running 'bootadm update-archive'
>
> Assuming that your boot-archive problem is an out of date boot-archive
> message at boot and/or doing a clean reboot to let the system try to
> write an up to date boot-archive.
Yeah, it is remembering to
> I could use a little clarification on how these unrecoverable disk errors
> behave -- or maybe a lot, depending on one's point of view.
>
> So, when one of these "once in around ten (or 100) terabytes read" events
> occurs, my understanding is that a read error is returned by the drive,
> and th
Jorgen,
You may want to try running 'bootadm update-archive'
Assuming that your boot-archive problem is an out of date boot-archive
message at boot and/or doing a clean reboot to let the system try to
write an up to date boot-archive.
I would also encourage you to connect the LOM to the network
NOC staff couldn't reboot it after the quotacheck crash, and I only just
got around to going to the Datacenter. This time I disabled NFS, and
the rsync that was running, and ran just quotacheck and it completed
successfully. The reason it didn't boot what that damned boot-archive
again. Serio
Steve McKinty wrote:
1) First issue relates to the überblock. Updates to it are assumed to be atomic, but if the replication block size is smaller than the überblock then we can't guarantee that the whole überblock is replicated as an entity. That could in theory result in a corrupt überbl
[EMAIL PROTECTED] said:
> You are confusing unrecoverable disk errors (which are rare but orders of
> magnitude more common) with otherwise *undetectable* errors (the occurrence
> of which is at most once in petabytes by the studies I've seen, rather than
> once in terabytes), despite my attempt to
On December 13, 2007 12:51:55 PM -0800 "can you guess?"
<[EMAIL PROTECTED]> wrote:
> ...
>
>> when the difference between an unrecoverable single
>> bit error is not just
>> 1 bit but the entire file, or corruption of an entire
>> database row (etc),
>> those small and infrequent errors are an "ex
J.P. King wrote:
>> Wow, that a neat idea, and crazy at the same time. But the mknod's minor
>> value can be 0-262143 so it probably would be doable with some loss of
>> memory and efficiency. But maybe not :) (I would need one lofi dev per
>> filesystem right?)
>>
>> Definitely worth remembering i
Great questions.
> 1) First issue relates to the überblock. Updates to
> it are assumed to be atomic, but if the replication
> block size is smaller than the überblock then we
> can't guarantee that the whole überblock is
> replicated as an entity. That could in theory result
> in a corrupt über
> Have you thought of solid state cache for the ZIL? There's a
> 16GB battery backed PCI card out there, I don't know how much
> it costs, but the blog where I saw it mentioned a 20x
> improvement in performance for small random writes.
Thought about it, looked in the Sun Store, couldn't find
...
> >> If the RAID card scrubs its disks
>
> A scrub without checksum puts a huge burden on disk
> firmware and
> error reporting paths :-)
Actually, a scrub without checksum places far less burden on the disks and
their firmware than ZFS-style scrubbing does, because it merely has to scan
Heh, interesting to see somebody else using the sheer number of disks in the
Thumper to their advantage :)
Have you thought of solid state cache for the ZIL? There's a 16GB battery
backed PCI card out there, I don't know how much it costs, but the blog where I
saw it mentioned a 20x improvemen
...
> when the difference between an unrecoverable single
> bit error is not just
> 1 bit but the entire file, or corruption of an entire
> database row (etc),
> those small and infrequent errors are an "extremely
> big" deal.
You are confusing unrecoverable disk errors (which are rare but orders
We are currently experiencing a very huge perfomance drop on our zfs storage
server.
We have 2 pools, pool 1 stor is a raidz out of 7 iscsi nodes, home is a local
mirror pool. Recently we had some issues with one of the storagenodes, because
of that the pool was degraded. Since we did not succe
On 13-Dec-07, at 6:28 PM, Frank Cusack wrote:
> On December 13, 2007 11:34:54 AM -0800 "can you guess?"
> <[EMAIL PROTECTED]> wrote:
>> By contrast, if extremely rare undetected and (other than via ZFS
>> checksums) undetectable (or considerably more common undetected but
>> detectable via disk E
On December 13, 2007 11:34:54 AM -0800 "can you guess?"
<[EMAIL PROTECTED]> wrote:
> By contrast, if extremely rare undetected and (other than via ZFS
> checksums) undetectable (or considerably more common undetected but
> detectable via disk ECC codes, *if* the data is accessed) corruption
> occu
On December 13, 2007 9:47:00 AM -0800 MP <[EMAIL PROTECTED]> wrote:
>> Additional examples abound.
>
> Doubtless :)
>
> More usefully, can you confirm whether Solaris works on this chassis
> without the RAID controller?
way back, i had Solaris working with a promise j200s (jbod sas) chassis,
to th
Steve McKinty wrote:
> I have a couple of questions and concerns about using ZFS in an environment
> where the underlying LUNs are replicated at a block level using products like
> HDS TrueCopy or EMC SRDF. Apologies in advance for the length, but I wanted
> the explanation to be clear.
>
> (I
[EMAIL PROTECTED] said:
> What are the approaches to finding what external USB disks are currently
> connected? I'm starting on backup scripts, and I need to check which
> volumes are present before I figure out what to back up to them. I
> . . .
In addition to what others have suggested so f
> Are there benchmarks somewhere showing a RAID10
> implemented on an LSI card with, say, 128MB of cache
> being beaten in terms of performance by a similar
> zraid configuration with no cache on the drive
> controller?
>
> Somehow I don't think they exist. I'm all for data
> scrubbing, but this a
> Would you two please SHUT THE F$%K UP.
Just for future reference, if you're attempting to squelch a public
conversation it's often more effective to use private email to do it rather
than contribute to the continuance of that public conversation yourself.
Have a nice day!
- bill
This mes
I've hit the problem myself recently, and mounting the filesystem cleared
something in the brains of ZFS and alowed me to snapshot.
http://www.mail-archive.com/zfs-discuss@opensolaris.org/msg00812.html
PS: I'll use Google before asking some questions, a'la (C) Bart Simpson
That's how I found yo
On 13-Dec-07, at 3:54 PM, Richard Elling wrote:
> [EMAIL PROTECTED] wrote:
>> Shawn,
>>
>> Using slices for ZFS pools is generally not recommended so I think
>> we minimized any command examples with slices:
>>
>> # zpool create tank mirror c1t0d0s0 c1t1d0s0
>>
>
> Cindy,
> I think the term "gene
[EMAIL PROTECTED] wrote:
> Shawn,
>
> Using slices for ZFS pools is generally not recommended so I think
> we minimized any command examples with slices:
>
> # zpool create tank mirror c1t0d0s0 c1t1d0s0
>
Cindy,
I think the term "generally not recommended" requires more context. In
the case
o
> Additional examples abound.
Doubtless :)
More usefully, can you confirm whether Solaris works on this chassis without
the RAID controller?
This message posted from opensolaris.org
___
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://ma
Jill,
I was recently looking for a similar solution to try and reconnect a
renumbered device while the pool was live.
e.g. zpool online mypool
As in zpool replace but with the indication that this isn't a new
device.
What I have been doing to deal with the renumbering is exactly the
export,
MP wrote:
>> this anti-raid-card movement is puzzling.
>>
>
> I think you've misinterpreted my questions.
> I queried the necessity of paying extra for an seemingly unnecessary RAID
> card for zfs. I didn't doubt that it could perform better.
> Wasn't one of the design briefs of zfs, that it
My customer's zfs pools and their 6540 disk array had a firmware upgrade that
changed GUIDs so we need a procedure to let the zfs know it changed. They are
getting errors as if they replaced drives. But I need to make sure you know
they have not "replaced" any drives, and no drives have failed
I have a couple of questions and concerns about using ZFS in an environment
where the underlying LUNs are replicated at a block level using products like
HDS TrueCopy or EMC SRDF. Apologies in advance for the length, but I wanted
the explanation to be clear.
(I do realise that there are other
On Wed, 2007-12-12 at 21:35 -0600, David Dyer-Bennet wrote:
> What are the approaches to finding what external USB disks are currently
> connected?
Would "rmformat -l" or "eject -l" fit the bill ?
> The external USB backup disks in question have ZFS filesystems on them,
> which may make a diff
Would you two please SHUT THE F$%K UP.
Dear God, my kids don't go own like this.
Please - let it die already.
Thanks very much.
/jim
can you guess? wrote:
>> Hello can,
>>
>> Thursday, December 13, 2007, 12:02:56 AM, you wrote:
>>
>> cyg> On the other hand, there's always the
>> possibility t
I'm using an x4500 as a large data store for our VMware environment. I
have mirrored the first 2 disks, and created a ZFS pool of the other 46:
22 pairs of mirrors, and 2 spares (optimizing for random I/O performance
rather than space). Datasets are shared to the VMware ESX servers via
NFS. We n
Eric Haycraft wrote:
> You may want to peek here first. Tim has some scripts already and if not
> exactly what you want, I am sure it could be reverse engineered.
>
> http://blogs.sun.com/timf/entry/zfs_automatic_for_the_people
>
>
Thanks, but I already read those, and referred to those in my
On 13-Dec-07, at 1:56 PM, Shawn Joy wrote:
> What are the commands? Everything I see is c1t0d0, c1t1d0. no
> slice just the completed disk.
I have used the following HOWTO. (Markup is TWiki, FWIW.)
Device names are for a 2-drive X2100. Other machines may differ, for
example, X4100 dr
You may want to peek here first. Tim has some scripts already and if not
exactly what you want, I am sure it could be reverse engineered.
http://blogs.sun.com/timf/entry/zfs_automatic_for_the_people
Eric
This message posted from opensolaris.org
_
> Hello can,
>
> Thursday, December 13, 2007, 12:02:56 AM, you wrote:
>
> cyg> On the other hand, there's always the
> possibility that someone
> cyg> else learned something useful out of this. And
> my question about
>
> To be honest - there's basically nothing useful in
> the thread,
> perhap
Shawn,
Using slices for ZFS pools is generally not recommended so I think
we minimized any command examples with slices:
# zpool create tank mirror c1t0d0s0 c1t1d0s0
Keep in mind that using the slices from the same disk for both UFS
and ZFS makes administration more complex. Please see the ZFS B
People.. for the n-teenth time, there are only two ways to kill a troll. One
involves a woodchipper and the possibility of an unwelcome visit from the FBI,
and the other involves ignoring them.
Internet Trolls:
http://en.wikipedia.org/wiki/Internet_troll
http://www.linuxextremist.com/?p=34
Ano
What are the commands? Everything I see is c1t0d0, c1t1d0. no
slice just the completed disk.
Robert Milkowski wrote:
> Hello Shawn,
>
> Thursday, December 13, 2007, 3:46:09 PM, you wrote:
>
> SJ> Is it possible to bring one slice of a disk under zfs controller and
> SJ> leave the other
> this anti-raid-card movement is puzzling.
I think you've misinterpreted my questions.
I queried the necessity of paying extra for an seemingly unnecessary RAID card
for zfs. I didn't doubt that it could perform better.
Wasn't one of the design briefs of zfs, that it would provide it's feature
Hello Shawn,
Thursday, December 13, 2007, 3:46:09 PM, you wrote:
SJ> Is it possible to bring one slice of a disk under zfs controller and
SJ> leave the others as ufs?
SJ> A customer is tryng to mirror one slice using zfs.
Yes, it's - it just works.
--
Best regards,
Robert
Is it possible to bring one slice of a disk under zfs controller and
leave the others as ufs?
A customer is tryng to mirror one slice using zfs.
Please respond to me directly and to the alias.
Thanks,
Shawn
___
zfs-discuss mailing list
zfs-discuss@op
Robert Milkowski wrote:
> Hello can,
>
> Thursday, December 13, 2007, 12:02:56 AM, you wrote:
>
> cyg> On the other hand, there's always the possibility that someone
> cyg> else learned something useful out of this. And my question about
>
> To be honest - there's basically nothing useful in th
Hello Vic,
Thursday, December 13, 2007, 10:29:57 AM, you wrote:
VC> Dear All,
VC> First of all thanks for a fascinating list - its my first read of the
VC> morning.
VC> Secondly I would like to ask a question. We currently have an EMC Celerra
VC> NAS which we use for CIFS, NFS and iSCSI. Its no
Hi there,
On Thu, 2007-12-13 at 02:17 -0800, Ross wrote:
> This may not be the best place to ask this, but I'm so new to Solaris
> I really don't know anywhere better. If anybody can suggest a better
> forum I'm all ears :)
You could have just mailed me :-)
> I've heard of Tim Foster's autoback
Dear All,
First of all thanks for a fascinating list - its my first read of the
morning.
Secondly I would like to ask a question. We currently have an EMC Celerra
NAS which we use for CIFS, NFS and iSCSI. Its not our favourite piece of
hardware and it is nearing the limits of its capacity (Tb) .
Hey folks,
This may not be the best place to ask this, but I'm so new to Solaris I really
don't know anywhere better. If anybody can suggest a better forum I'm all ears
:)
I've heard of Tim Foster's autobackup utility, that can automatically backup a
ZFS filesystem to a USB drive as it's conn
Hello can,
Thursday, December 13, 2007, 12:02:56 AM, you wrote:
cyg> On the other hand, there's always the possibility that someone
cyg> else learned something useful out of this. And my question about
To be honest - there's basically nothing useful in the thread,
perhaps except one thing - doe
51 matches
Mail list logo
