Christopher George wrote:
>> So why buy SSD for ZIL at all?
>
> For the record, not all SSDs "ignore cache flushes". There are at least
> two SSDs sold today that guarantee synchronous write semantics; the
> Sun/Oracle LogZilla and the DDRdrive X1. Also, I believe it is more
LogZilla? Are th
Arve Paalsrud wrote:
> Not to forget the The Deneva Reliability disks from OCZ that just got
> released. See
> http://www.oczenterprise.com/details/ocz-deneva-reliability-2-5-emlc-ssd.html
>
> "The Deneva Reliability family features built-in supercapacitor (SF-1500
> models) that acts as a tempora
I’ve posted a query regarding the visibility of snapshots via CIFS here
(http://opensolaris.org/jive/thread.jspa?threadID=130577&tstart=0)
however, I’m beginning to suspect that it may be a more fundamental ZFS
question so I’m asking the same question here.
At what level does the “zfs” directory
I have done a similar deployment,
However we gave each student their own ZFS filesystem. Each of which had a
.zfs directory in it.
On 16 June 2010 08:51, MichaelHoy wrote:
> I’ve posted a query regarding the visibility of snapshots via CIFS here (
> http://opensolaris.org/jive/thread.jspa?thre
David Markey wrote:
>
> I have done a similar deployment,
>
> However we gave each student their own ZFS filesystem. Each of which had
> a .zfs directory in it.
Don't host 50k filesystems on a single pool. It's more pain than it's
worth.
___
zfs-disc
MichaelHoy wrote:
> I’ve posted a query regarding the visibility of snapshots via CIFS here
> (http://opensolaris.org/jive/thread.jspa?threadID=130577&tstart=0)
> however, I’m beginning to suspect that it may be a more fundamental ZFS
> question so I’m asking the same question here.
>
> At what
On 15/06/2010 18:46, Brandon High wrote:
On Mon, Jun 14, 2010 at 2:07 PM, Roger Hernandez wrote:
OCZ has a new line of enterprise SSDs, based on the SandForce 1500
controller.
The SLC based drive should be great as a ZIL, and the MLC drives
should be a close second.
Neither is cost
On 16/06/2010 09:11, Arne Jansen wrote:
MichaelHoy wrote:
I’ve posted a query regarding the visibility of snapshots via CIFS here
(http://opensolaris.org/jive/thread.jspa?threadID=130577&tstart=0)
however, I’m beginning to suspect that it may be a more fundamental ZFS
question so I’m askin
"You can't expand a normal RAID, either, anywhere I've ever seen."
Is this true?
A "vdev" can be a group of discs configured as raidz1/mirror/etc. An zfs raid
consists of several vdev. You can add a new vdev whenever you want.
--
This message posted from opensolaris.org
___
> This may also be accomplished by using snapshots and
> clones of data
> sets. At least for OS images: user profiles and
> documents could be
> something else entirely.
Yes... but that will need a manager with access to zfs itself... but with
dedupe you can use a userland manager (much more
On 16/06/2010 11:30, Fco Javier Garcia wrote:
This may also be accomplished by using snapshots and
clones of data
sets. At least for OS images: user profiles and
documents could be
something else entirely.
Yes... but that will need a manager with access to zfs itself... but with
dedupe you can
>
> I think, with current bits, it's not a simple matter
> of "ok for
> enterprise, not ok for desktops". with an ssd for
> either main storage
> or l2arc, and/or enough memory, and/or a not very
> demanding workload, it
> seems to be ok.
The main problem is not performance (for a home serve
>>
>> I think, with current bits, it's not a simple matter
>> of "ok for
>> enterprise, not ok for desktops". with an ssd for
>> either main storage
>> or l2arc, and/or enough memory, and/or a not very
>> demanding workload, it
>> seems to be ok.
>
>
> The main problem is not performance (for a h
Got prices from a retailer now:
100GB - DENRSTE251E10-0100~1100 USD
200GB - DENRSTE251E10-0200~1900 USD
400GB - DENRSTE251E10-0400~4500 USD
Prices were given to a country in Europe, so USD prices might be lower.
-Arve
> -Original Message-
> From: zfs-discuss-boun...@opensola
>
> Does the machine respond to ping?
Yes
>
> If there is a gui does the mouse pointer move?
>
There is no GUI (nexentastor)
> Does the keyboard numlock key respond at all ?
Yes
>
> I just find it very hard to believe that such a
> situation could exist as I
> have done some *abusive* tes
On Wed, June 16, 2010 03:03, Arne Jansen wrote:
> Christopher George wrote:
>
>> For the record, not all SSDs "ignore cache flushes". There are at least
>> two SSDs sold today that guarantee synchronous write semantics; the
>> Sun/Oracle LogZilla and the DDRdrive X1. Also, I believe it is more
>
> >
> > Does the machine respond to ping?
>
> Yes
>
> >
> > If there is a gui does the mouse pointer move?
> >
>
> There is no GUI (nexentastor)
>
> > Does the keyboard numlock key respond at all ?
>
> Yes
>
> >
> > I just find it very hard to believe that such a
> > situation could exist
> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
> boun...@opensolaris.org] On Behalf Of Arne Jansen
>
> Don't host 50k filesystems on a single pool. It's more pain than it's
> worth.
I assume Michael has reached this conclusion due to factors which are not
necessary to discuss he
On Wed, June 16, 2010 07:59, Arve Paalsrud wrote:
> Got prices from a retailer now:
>
> 100GB - DENRSTE251E10-0100~1100 USD
> 200GB - DENRSTE251E10-0200~1900 USD
> 400GB - DENRSTE251E10-0400~4500 USD
>
> Prices were given to a country in Europe, so USD prices might be lower.
Heh. I jus
They'll probably track me down and shoot me later on. :o
-A
> -Original Message-
> From: David Magda [mailto:dma...@ee.ryerson.ca]
> Sent: 16. juni 2010 15:03
> To: Arve Paalsrud
> Cc: 'Scott Meilicke'; zfs-discuss@opensolaris.org
> Subject: Re: [zfs-discuss] OCZ Devena line of enterprise
> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
> boun...@opensolaris.org] On Behalf Of MichaelHoy
>
> If the “.zfs” subdirectory only exists as the direct child of the
> mount point then can someone suggest how I can make it visible lower
> down without requiring me (even if it
On Jun 16, 2010, at 6:46 AM, Dennis Clarke wrote:
>
> I have been lurking in this thread for a while for various reasons and
> only now does a thought cross my mind worth posting : Are you saying that
> a reasonably fast computer with 8GB of memory is entirely non-responsive
> due to a ZFS relate
On Wed, Jun 16, 2010 at 6:03 AM, Orvar Korvar <
knatte_fnatte_tja...@yahoo.com> wrote:
> "You can't expand a normal RAID, either, anywhere I've ever seen."
> Is this true?
>
> Depending on the software/hardware you used this is not true. Highend HW
raid controller support capacity expansion (addin
On Jun 16, 2010, at 9:02 AM, Carlos Varela
wrote:
Does the machine respond to ping?
Yes
If there is a gui does the mouse pointer move?
There is no GUI (nexentastor)
Does the keyboard numlock key respond at all ?
Yes
I just find it very hard to believe that such a
situation cou
According to the spec page in
http://www.oczenterprise.com/details/ocz-deneva-reliability-2-5-slc-ssd.html it
seems that the drive has a built-in supercapacitor to protect from power
outages.
--
This message posted from opensolaris.org
___
zfs-discuss
Hi all,
I am not a developer, but I have a background in engineering and a strong
interest in performance and optimization. A recent Slashdot reference really
piqued my interest. The reference is to an ACM Queue article that challenges
some conventional wisdom regarding algorithm performance
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
I've very in-frequently seen the RAMSAN devices mentioned here. Probably
due to price.
However a long time ago I think I remember someone suggesting a build it
yourself RAMSAN.
Where is the down side of one or 2 OS boxes with a whole lot of RAM
(and/
> I mean, could I stripe across multiple devices to be able to handle higher
> throughput?
Absolutely. Stripping four DDRdrive X1s (16GB dedicated log) is
extremely simple. Each X1 has it's own dedicated IOPS controller, critical
for approaching linear synchronous write scalability. The same
David Magda wrote:
> On Wed, June 16, 2010 03:03, Arne Jansen wrote:
>> Christopher George wrote:
>>
>>> For the record, not all SSDs "ignore cache flushes". There are at least
>>> two SSDs sold today that guarantee synchronous write semantics; the
>>> Sun/Oracle LogZilla and the DDRdrive X1. Als
Hi All.
Can you explain to me hot to disable ACL on ZFS ?
'aclmode' prop does not exists in props of zfs dataset, but this prop on the
zfs man( http://docs.sun.com/app/docs/doc/819-2240/zfs-1m?l=en&a=view&q=zfs
)
Thanks.
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z
> > From: zfs-discuss-boun...@opensolaris.org
> [mailto:zfs-discuss-
> > boun...@opensolaris.org] On Behalf Of Arne Jansen
> >
> > Don't host 50k filesystems on a single pool. It's
> more pain than it's
> > worth.
>
> I assume Michael has reached this conclusion due to
> factors which are not
> n
On Wed, June 16, 2010 10:44, Arne Jansen wrote:
> David Magda wrote:
>
>> I'm not sure you'd get the same latency and IOps with disk that you can
>> with a good SSD:
>>
>> http://blogs.sun.com/brendan/entry/slog_screenshots
[...]
> Please keep in mind I'm talking about a usage as ZIL, not as L2
On Wed, June 16, 2010 11:02, David Magda wrote:
[...]
> Yes, I understood it as suck, and that link is for ZIL. For L2ARC SSD
> numbers see:
s/suck/such/
:)
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http://mail.opensolaris.org/mailman/li
David Magda wrote:
> On Wed, June 16, 2010 11:02, David Magda wrote:
> [...]
>> Yes, I understood it as suck, and that link is for ZIL. For L2ARC SSD
>> numbers see:
>
> s/suck/such/
ah, I tried to make sense from 'suck' in the sense of 'just writing
sequentially' or something like that ;)
>
>
David Magda wrote:
> On Wed, June 16, 2010 10:44, Arne Jansen wrote:
>> David Magda wrote:
>>
>>> I'm not sure you'd get the same latency and IOps with disk that you can
>>> with a good SSD:
>>>
>>> http://blogs.sun.com/brendan/entry/slog_screenshots
> [...]
>> Please keep in mind I'm talking a
Hi--
No way exists to outright disable ACLs on a ZFS file system.
The removal of the aclmode property was a recent dev build change.
The zfs.1m man page you cite is for a Solaris release that is no longer
available and will be removed soon.
What are you trying to do? You can remove specific ACL
On Wed, Jun 16, 2010 at 3:03 AM, Orvar Korvar <
knatte_fnatte_tja...@yahoo.com> wrote:
> "You can't expand a normal RAID, either, anywhere I've ever seen."
> Is this true?
>
> A "vdev" can be a group of discs configured as raidz1/mirror/etc. An zfs
> raid consists of several vdev. You can add a ne
Greetings,
my Opensolaris 06/2009 installation on an Thinkpad x60 notebook is a little
unstable. From the symptoms during installation it seems that there might be
something with the ahci driver. No problem with the Opensolaris LiveCD system.
Some weeks ago during copy of about 2 GB from a USB
I have multiple servers, all with the same configuration of mirrored zfs root
pools. I've been asked how to take a potentially "damaged" disk from one
machine and carry it to another machine, in the event that some hw failure
prevents fixing a boot problem in place. So we have one half of mirror
On Wed, Jun 16, 2010 at 3:39 AM, Fco Javier Garcia wrote:
> The main problem is not performance (for a home server is not a problem)...
> but what really is a BIG PROBLEM is when you try to delete a snapshot a
> little big... (try yourself...create a big random file with 90 Gb of data...
> then
On Wed, Jun 16, 2010 at 1:18 AM, Robert Milkowski wrote:
> If you don't need a high random iops from you l2arc then perhaps you don't
> need an l2arc at all?
Sorry, random write iops. The L2ARC is filled slowly once it's warmed up.
The L2ARC is helpful because it has low latency and doesn't stea
Hi,
Have any of you looked at SSD's from Virident ?
http://virident.com/products.php
Looks pretty impressive to me, though I am sure the price is as well.
- Lasse
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On Wed, Jun 16, 2010 at 10:24 AM, Jay Seaman
wrote:
> zpool import
>
> to get the id number of the non-native rpool
You'll get the names and IDs for any un-imported pools.
> then use
> zpool import -f -R /mnt newpool
That should work. You may have to put the pool id after the -R argument thoug
On Wed, 16 Jun 2010, Arne Jansen wrote:
Please keep in mind I'm talking about a usage as ZIL, not as L2ARC or main
pool. Because ZIL issues nearly sequential writes, due to the NVRAM-protection
of the RAID-controller the disk can leave the write cache enabled. This means
the disk can write essen
Arne Jansen wrote:
David Magda wrote:
On Wed, June 16, 2010 10:44, Arne Jansen wrote:
David Magda wrote:
I'm not sure you'd get the same latency and IOps with disk that you can
with a good SSD:
http://blogs.sun.com/brendan/entry/slog_screenshots
[...]
Please keep in mind I'm talking ab
On Wed, June 16, 2010 14:15, Lasse Osterild wrote:
> Hi,
>
> Have any of you looked at SSD's from Virident ?
> http://virident.com/products.php
> Looks pretty impressive to me, though I am sure the price is as well.
Only Linux distributions are listed under "Platform Support".
___
I had the same experience.
Finally i could remove the dedup dataset (1,7 TB)... i was wrong... it wasnt 30
hours... it was "only" 21 (the reason of the mistake: first i tried to delete
with nexentastor enterprises trial 3.02... but when i see that there was a new
version of nexentastor comunity
In addition to all comments below, 7000 series which are competing with
NetApp boxes have the ability to add more storage to the pool in a couple
seconds, online and does load balancing automaticaly. Also we dont have the
16 TB limit NetApp has. Nearly all customers did tihs without any PS
involvem
Bob Friesenhahn wrote:
On Wed, 16 Jun 2010, Arne Jansen wrote:
Please keep in mind I'm talking about a usage as ZIL, not as L2ARC or
main
pool. Because ZIL issues nearly sequential writes, due to the
NVRAM-protection
of the RAID-controller the disk can leave the write cache enabled.
This mea
On Wed, June 16, 2010 15:15, Arne Jansen wrote:
> I double checked before posting: I can nearly saturate a 15k disk if I
> make full use of the 32 queue slots giving 137 MB/s or 34k IOPS/s. Times
> 3 nearly matches the above mentioned 114k IOPS :)
34K*3 = 102K. 12K isn't anything to sneeze at :)
David Magda wrote:
On Wed, June 16, 2010 15:15, Arne Jansen wrote:
I double checked before posting: I can nearly saturate a 15k disk if I
make full use of the 32 queue slots giving 137 MB/s or 34k IOPS/s. Times
3 nearly matches the above mentioned 114k IOPS :)
34K*3 = 102K. 12K isn't anything
On Wed, Jun 16, 2010 at 04:44:07PM +0200, Arne Jansen wrote:
> Please keep in mind I'm talking about a usage as ZIL, not as L2ARC or main
> pool. Because ZIL issues nearly sequential writes, due to the NVRAM-protection
> of the RAID-controller the disk can leave the write cache enabled. This means
On Wed, Jun 16, 2010 at 11:32 AM, Seaman, John
wrote:
> Could you import it back on the original server with
>
> Zpool import -f newpool rpool?
If you're trying to boot off of it on the original host (which is
likely, since it's the rpool) then you may not be able to if the pool
is named somethin
Hi Jay,
I think you mean you want to connect the disk with a potentially damaged
ZFS BE on another system and mount the ZFS BE for possible repair
purposes.
This recovery method is complicated by the fact that changing the root
pool name can cause the original system not to boot.
Other potent
Should naming the root pool something unique (rpool-nodename) be a
best practice?
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