On 4 apr 2010, at 06.01, Richard Elling wrote:
Thank you for your reply! Just wanted to make sure.
> Do not assume that power outages are the only cause of unclean shutdowns.
> -- richard
Thanks, I have seen that mistake several times with other
(file)systems, and hope I'll never ever make it m
I would like to get some help diagnosing permanent errors on my files. The
machine in question has 12 1TB disks connected to an Areca raid card. I
installed OpenSolaris build 134 and according to zpool history, created a pool
with
zpool create bigraid raidz2 c4t0d0 c4t0d1 c4t0d2 c4t0d3 c4t0d4 c
I am trying to recover a raid set, there are only three drives that are part of
the set. I attached a disk and discovered it was bad. It was never part of
the raid set. The disk is now gone and when I try to import the pool I get the
error listed below. Is there a chance to recover? TIA!
S
On 04/ 4/10 10:00 AM, Willard Korfhage wrote:
What should I make of this? All the disks are bad? That seems
unlikely. I found another thread
http://opensolaris.org/jive/thread.jspa?messageID=399988
where it finally came down to bad memory, so I'll test that. Any
other suggestions?
It could b
Yeah, this morning I concluded I really should be running ECC ram. I sometimes
wonder why people people don't run ECC ram more frequently. I remember a decade
ago, when ram was much, much less dense, people fretted about alpha particles
randomly flipping bits, but that seems to have died down.
Hello list,
I started playing aroud with Comstar in snv_134. In snv_116 version of ZFS, a
new hidden property for the Comstar MetaData has been intoduced (stmf_sbd_lu).
This makes it possible to migrate from legacy (iscsi target daemon) to Comstar
without data loss, which is great.
Before th
I finally achieved critical mass on enough parts to put my zfs server together.
It basically ran the first time, any non-function being my own
misunderstandings. I wanted to issue a thank you to those of you who suffered
through my questions and pointed me in the right direction. Many pieces of
I had always thought that with mpxio, it load-balances IO request across your
storage ports but this article
http://christianbilien.wordpress.com/2007/03/23/storage-array-bottlenecks/ has
got me thinking its not true.
"The available bandwidth is 2 or 4Gb/s (200 or 400MB/s – FC frames are 10 byt
On Sun, Apr 4, 2010 at 8:55 PM, Brad wrote:
> I had always thought that with mpxio, it load-balances IO request across
> your storage ports but this article
> http://christianbilien.wordpress.com/2007/03/23/storage-array-bottlenecks/has
> got me thinking its not true.
>
> "The available bandwidt
> When running the card in copyback write cache mode, I got horrible
> performance (with zfs), much worse than with copyback disabled
> (which I believe should mean it does write-through), when tested
> with filebench.
When I benchmark my disks, I also find that the system is slower with
WriteBack
> Your experience is exactly why I suggested ZFS start doing some "right
> sizing" if you will. Chop off a bit from the end of any disk so that
> we're guaranteed to be able to replace drives from different
> manufacturers. The excuse being "no reason to, Sun drives are always
> of identical size
> CR 6844090, zfs should be able to mirror to a smaller disk
> http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=6844090
> b117, June 2009
Awesome. Now if someone would only port that to solaris, I'd be a happy
man. ;-)
___
zfs-discuss maili
On Sun, Apr 4, 2010 at 9:46 PM, Edward Ned Harvey wrote:
> > CR 6844090, zfs should be able to mirror to a smaller disk
> > http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=6844090
> > b117, June 2009
>
> Awesome. Now if someone would only port that to solaris, I'd be a happy
> man. ;
> Hmm, when you did the write-back test was the ZIL SSD included in the
> write-back?
>
> What I was proposing was write-back only on the disks, and ZIL SSD
> with no write-back.
The tests I did were:
All disks write-through
All disks write-back
With/without SSD for ZIL
All the permutations of th
> Actually, It's my experience that Sun (and other vendors) do exactly
> that for you when you buy their parts - at least for rotating drives, I
> have no experience with SSD's.
>
> The Sun disk label shipped on all the drives is setup to make the drive
> the standard size for that sun part number
> > There is some question about performance. Is there any additional
> overhead caused by using a slice instead of the whole physical device?
>
> No.
>
> If the disk is only used for ZFS, then it is ok to enable volatile disk
> write caching
> if the disk also supports write cache flush request
I haven't taken that approach, but I guess I'll give it a try.
From: Tim Cook [mailto:t...@cook.ms]
Sent: Sunday, April 04, 2010 11:00 PM
To: Edward Ned Harvey
Cc: Richard Elling; zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] To slice, or not to slice
On Sun, Apr 4, 2010
On Apr 2, 2010, at 5:03 AM, Edward Ned Harvey wrote:
>>> Seriously, all disks configured WriteThrough (spindle and SSD disks
>>> alike)
>>> using the dedicated ZIL SSD device, very noticeably faster than
>>> enabling the
>>> WriteBack.
>>
>> What do you get with both SSD ZIL and WriteBack disks e
On Apr 4, 2010, at 8:11 PM, Edward Ned Harvey wrote:
>>> There is some question about performance. Is there any additional
>> overhead caused by using a slice instead of the whole physical device?
>>
>> No.
>>
>> If the disk is only used for ZFS, then it is ok to enable volatile disk
>> write ca
I have a problem with my zfs system, it's getting slower and slower over time.
When the OpenSolaris machine is rebooted and just started I get about 30-35MB/s
in read and write but after 4-8 hours I'm down to maybe 10MB/s and it varies
between 4-18MB/s. Now, if i reboot the machine it's all gone
Looks like it was RAM. I ran memtest+ 4.00, and it found no problems. I removed
2 of the 3 sticks of RAM, ran a backup, and had no errors. I'm running more
extensive tests, but it looks like that was it. A new motherboard, CPU and ECC
RAM are on the way to me now.
--
This message posted from op
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