[zfs-discuss] Using a zvol from your rpool as zil for another zpool

2010-07-02 Thread Ray Van Dolson
We have a server with a couple X-25E's and a bunch of larger SATA disks. To save space, we want to install Solaris 10 (our install is only about 1.4GB) to the X-25E's and use the remaining space on the SSD's for ZIL attached to a zpool created from the SATA drives. Currently we do this by

Re: [zfs-discuss] Dedup RAM requirements, vs. L2ARC?

2010-07-02 Thread Erik Trimble
On 7/1/2010 10:17 PM, Neil Perrin wrote: On 07/01/10 22:33, Erik Trimble wrote: On 7/1/2010 9:23 PM, Geoff Nordli wrote: Hi Erik. Are you saying the DDT will automatically look to be stored in an L2ARC device if one exists in the pool, instead of using ARC? Or is there some sort of memory

Re: [zfs-discuss] Using a zvol from your rpool as zil for another zpool

2010-07-02 Thread Ray Van Dolson
However, SVM+UFS is more annoying to work with as far as LiveUpgrade is concerned. We'd love to use a ZFS root, but that requires that the entire SSD be dedicated as an rpool leaving no space for ZIL. Or does it? It appears that we could do a: # zfs create -V 24G rpool/zil On our

Re: [zfs-discuss] dedup accounting anomaly / dedup experiments

2010-07-02 Thread Will Murnane
On Thu, Jul 1, 2010 at 04:33, Lutz Schumann presa...@storageconcepts.de wrote: Hello list, I wanted to test deduplication a little and did a experiment. My question was:  can I dedupe infinite or is ther a upper limit ? So for that I did a very basic test. -  I created a ramdisk-pool (1GB)

Re: [zfs-discuss] zfs - filesystem versus directory

2010-07-02 Thread Ian Collins
On 07/ 2/10 04:12 PM, Peter Taps wrote: Folks, While going through a quick tutorial on zfs, I came across a way to create zfs filesystem within a filesystem. For example: # zfs create mytest/peter where mytest is a zpool filesystem. When does this way, the new filesystem has the mount point

Re: [zfs-discuss] confused about lun alignment

2010-07-02 Thread Darren J Moffat
On 01/07/2010 23:58, Derek Olsen wrote: Folks. My env is Solaris 10 update 8 amd64. Does LUN alignment matter when I'm creating zpool's on disks (lun's) with EFI labels and providing zpool the entire disk? http://blogs.sun.com/dlutz/entry/partition_alignment_guidelines_for_unified --

Re: [zfs-discuss] confused about lun alignment

2010-07-02 Thread Richard Elling
On Jul 1, 2010, at 7:29 PM, Derek Olsen wrote: doh! It turns out the host in question is actually a Solaris 10 update 6 host. It appears that an Solaris 10 update 8 host actually sets the start sector at 256. Yes, this is a silly bug, fixed years ago. So to simplify the question. If

Re: [zfs-discuss] Checksum errors with SSD.

2010-07-02 Thread Benjamin Grogg
Dear Cindy and Edward Many thanks for your input. Indeed there is something wrong with the SSD. Smartmontools confirm me also couples of errors. So I open a case and hopefully they will replace the SSD. What I learned? - Be careful of special offers - Use also rock solid components for your

Re: [zfs-discuss] zfs destroy hangs machine if snapshot exists- workaround found

2010-07-02 Thread Lo Zio
Sorry roy, but reading the post you pointed me meaning about 1,2GB per 1TB stored on 128kB blocks I have 1,5TB and 4 Gb of RAM, and not all of this is deduped. Why you say it's *way* too small. It should be *way* enough. From the performance point of view, it is not a problem, I use that machine

Re: [zfs-discuss] Using a zvol from your rpool as zil for another zpool

2010-07-02 Thread Ben Taylor
We have a server with a couple X-25E's and a bunch of larger SATA disks. To save space, we want to install Solaris 10 (our install is only about 1.4GB) to the X-25E's and use the remaining space on the SSD's for ZIL attached to a zpool created from the SATA drives. Currently we do

Re: [zfs-discuss] zfs destroy hangs machine if snapshot exists- workaround found

2010-07-02 Thread Roy Sigurd Karlsbakk
- Original Message - Sorry roy, but reading the post you pointed me meaning about 1,2GB per 1TB stored on 128kB blocks I have 1,5TB and 4 Gb of RAM, and not all of this is deduped. Why you say it's *way* too small. It should be *way* enough. From the performance point of view, it is

Re: [zfs-discuss] zfs - filesystem versus directory

2010-07-02 Thread Edward Ned Harvey
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- boun...@opensolaris.org] On Behalf Of Peter Taps # zfs create mytest/peter where mytest is a zpool filesystem. When does it make sense to create such a filesystem versus just creating a directory? This is a thorny bush,

Re: [zfs-discuss] Dedup RAM requirements, vs. L2ARC?

2010-07-02 Thread Neil Perrin
On 07/02/10 00:57, Erik Trimble wrote: On 7/1/2010 10:17 PM, Neil Perrin wrote: On 07/01/10 22:33, Erik Trimble wrote: On 7/1/2010 9:23 PM, Geoff Nordli wrote: Hi Erik. Are you saying the DDT will automatically look to be stored in an L2ARC device if one exists in the pool, instead of using

Re: [zfs-discuss] zpool rename?

2010-07-02 Thread Julie LaMothe
Cindy Swearingen cindy.swearingen at oracle.com writes: Cindy - this discusses how to rename the rpool temporarily. Is there a way to do it permanently and will it break anything? I have to rename a root pool because of a type-o. This is on a Solaris sparc environment. Please help! thanks

Re: [zfs-discuss] Using a zvol from your rpool as zil for another zpool

2010-07-02 Thread Ray Van Dolson
On Fri, Jul 02, 2010 at 03:40:26AM -0700, Ben Taylor wrote: We have a server with a couple X-25E's and a bunch of larger SATA disks. To save space, we want to install Solaris 10 (our install is only about 1.4GB) to the X-25E's and use the remaining space on the SSD's for ZIL

Re: [zfs-discuss] zpool rename?

2010-07-02 Thread Roy Sigurd Karlsbakk
- Original Message - Cindy Swearingen cindy.swearingen at oracle.com writes: Cindy - this discusses how to rename the rpool temporarily. Is there a way to do it permanently and will it break anything? I have to rename a root pool because of a type-o. This is on a Solaris sparc

Re: [zfs-discuss] Using a zvol from your rpool as zil for another zpool

2010-07-02 Thread Cindy Swearingen
Hi Ray, In general, using components from one pool for another pool is discouraged because this configuration can cause deadlocks. Using this configuration for ZIL usage would probably work fine (with a performance hit because of the volume) until something unforeseen goes wrong. This config is

Re: [zfs-discuss] zfs - filesystem versus directory

2010-07-02 Thread Peter Taps
Thank you all, especially Edward, for the enlightenment. Regards, Peter -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] zpool rename?

2010-07-02 Thread Julie LaMothe
so - if i boot up off of cdrom and do an export of the root pool under name rpool1 can i reimport it under rpool2 (using the same disk) and keep it at that name permanently and have not issues with booting in the future or any other O/S related issues? That is the question. :-) On Fri, Jul 2,

Re: [zfs-discuss] dedup accounting anomaly / dedup experiments

2010-07-02 Thread Lutz Schumann
Hi, I don't know about the rest of your test, but writing zeroes to a ZFS filesystem is probably not a very good test, because ZFS recognizes these blocks of zeroes and doesn't actually write anything. Unless maybe encryption is on, but maybe not even then. Not true. If I want ZFS to

Re: [zfs-discuss] zpool rename?

2010-07-02 Thread Cindy Swearingen
Hi Julie, I think the answer is no, you cannot rename the root pool and expect that any other O/S-related boot operation will complete successfully. Live Upgrade in particular would be unhappy and changing the root dataset mount point might cause the system not to boot. Thanks, Cindy On

Re: [zfs-discuss] Dedup RAM requirements, vs. L2ARC?

2010-07-02 Thread Erik Trimble
On 7/2/2010 6:30 AM, Neil Perrin wrote: On 07/02/10 00:57, Erik Trimble wrote: That's what I assumed. One further thought, though. Is the DDT is treated as a single entity - so it's *all* either in the ARC or in the L2ARC? Or does it move one entry at a time into the L2ARC as it fills the

[zfs-discuss] rpool issue

2010-07-02 Thread Ketan
I have created one of my system from a flash archive which was created from a system running zfs root .. but since its update 6 it didn;t work with flash archive .. after the system is built from the same flash archive .. system is up but i get following error for rpool .. How can i remove

Re: [zfs-discuss] Dedup RAM requirements, vs. L2ARC?

2010-07-02 Thread Miles Nordin
np == Neil Perrin neil.per...@oracle.com writes: np The L2ARC just holds blocks that have been evicted from the np ARC due to memory pressure. The DDT is no different than any np other object (e.g. file). The other cacheable objects require pointers to stay in the ARC pointing to

Re: [zfs-discuss] zpool rename?

2010-07-02 Thread Darren J Moffat
On 02/07/2010 17:57, Cindy Swearingen wrote: I think the answer is no, you cannot rename the root pool and expect that any other O/S-related boot operation will complete successfully. Live Upgrade in particular would be unhappy and changing the root dataset mount point might cause the system not

Re: [zfs-discuss] dedup accounting anomaly / dedup experiments

2010-07-02 Thread Darren J Moffat
On 02/07/2010 17:56, Lutz Schumann wrote: I don't know about the rest of your test, but writing zeroes to a ZFS filesystem is probably not a very good test, because ZFS recognizes these blocks of zeroes and doesn't actually write anything. Unless maybe encryption is on, but maybe not even then.

Re: [zfs-discuss] Using a zvol from your rpool as zil for another zpool

2010-07-02 Thread Ray Van Dolson
On Fri, Jul 02, 2010 at 08:18:48AM -0700, Erik Ableson wrote: Le 2 juil. 2010 à 16:30, Ray Van Dolson rvandol...@esri.com a écrit : On Fri, Jul 02, 2010 at 03:40:26AM -0700, Ben Taylor wrote: We have a server with a couple X-25E's and a bunch of larger SATA disks. To save space, we

Re: [zfs-discuss] Dedup RAM requirements, vs. L2ARC?

2010-07-02 Thread Neil Perrin
On 07/02/10 11:14, Erik Trimble wrote: On 7/2/2010 6:30 AM, Neil Perrin wrote: On 07/02/10 00:57, Erik Trimble wrote: That's what I assumed. One further thought, though. Is the DDT is treated as a single entity - so it's *all* either in the ARC or in the L2ARC? Or does it move one entry at

Re: [zfs-discuss] zpool import hangs indefinitely (retry post in parts; too long?)

2010-07-02 Thread Victor Latushkin
On Jul 1, 2010, at 10:28 AM, Andrew Jones wrote: Victor, I've reproduced the crash and have vmdump.0 and dump device files. How do I query the stack on crash for your analysis? What other analysis should I provide? Output of 'echo ::threadlist -v | mdb 0' can be a good start in this

[zfs-discuss] [SOLVED] Re: Checksum errors with SSD.

2010-07-02 Thread Benjamin Grogg
Dear Forum Just technical infos for all who have the same problem with AMD Chipset and Kingston SSDs. Official statement from Kingston : We have 2 major problem sources: - chipset comes from AMD (there is no better chipset for SSDs than Intel) - your OS is not Windows (in which case all

[zfs-discuss] NexentaStor 3.0.3 vs OpenSolaris - Patches more up to date?

2010-07-02 Thread Steve Radich, BitShop, Inc.
I see in NexentaStor's announcement of Community Edition 3.0.3 they mention some backported patches in this release. Aside from their management features / UI what is the core OS difference if we move to Nexenta from OpenSolaris b134? These DeDup bugs are my main frustration - if a staff

Re: [zfs-discuss] zpool import hangs indefinitely (retry post in parts; too long?)

2010-07-02 Thread Andrew Jones
Andrew, Looks like the zpool is telling you the devices are still doing work of some kind, or that there are locks still held. Agreed; it appears the CSV1 volume is in a fundamentally inconsistent state following the aborted zfs destroy attempt. See later in this thread where Victor

[zfs-discuss] Hang ZFS due to asyncronous delete?

2010-07-02 Thread Steve Radich, BitShop, Inc.
As most others have - I've been having issues with dedup. Here's my situation, 4TB pool for daily backups of sql server - dedup enabled - so a typical directory has 100+ files that are mostly identical (some all are identical). If I do rm * OpenSolaris is dead, zfs hung, etc. sometimes it

Re: [zfs-discuss] Kernel Panic on zpool clean

2010-07-02 Thread George
I think I'll try booting from a b134 Live CD and see that will let me fix things. Sadly it appears not - at least not straight away. Running zpool import now gives pool: storage2 id: 14701046672203578408 state: FAULTED status: The pool was last accessed by another system. action: The

Re: [zfs-discuss] NexentaStor 3.0.3 vs OpenSolaris - Patches more up to date?

2010-07-02 Thread Richard Elling
On Jul 2, 2010, at 12:53 PM, Steve Radich, BitShop, Inc. wrote: I see in NexentaStor's announcement of Community Edition 3.0.3 they mention some backported patches in this release. Yes. These patches are in the code tree, currently at b143 (~18 weeks newer than b134) Aside from their

Re: [zfs-discuss] Using a zvol from your rpool as zil for another zpool

2010-07-02 Thread James Dickens
On Fri, Jul 2, 2010 at 1:18 AM, Ray Van Dolson rvandol...@esri.com wrote: We have a server with a couple X-25E's and a bunch of larger SATA disks. To save space, we want to install Solaris 10 (our install is only about 1.4GB) to the X-25E's and use the remaining space on the SSD's for ZIL

Re: [zfs-discuss] NexentaStor 3.0.3 vs OpenSolaris - Patches more up to date?

2010-07-02 Thread Tim Cook
On Fri, Jul 2, 2010 at 8:06 PM, Richard Elling rich...@nexenta.com wrote: On Jul 2, 2010, at 12:53 PM, Steve Radich, BitShop, Inc. wrote: I see in NexentaStor's announcement of Community Edition 3.0.3 they mention some backported patches in this release. Yes. These patches are in the code

Re: [zfs-discuss] NexentaStor 3.0.3 vs OpenSolaris - Patches more up to date?

2010-07-02 Thread Richard Elling
On Jul 2, 2010, at 6:48 PM, Tim Cook wrote: Given that the most basic of functionality was broken in Nexenta, and not Opensolaris, and I couldn't get a single response, I have a hard time recommending ANYONE go to Nexenta. It's great they're employing you now, but the community edition has

Re: [zfs-discuss] NexentaStor 3.0.3 vs OpenSolaris - Patches more up to date?

2010-07-02 Thread Tim Cook
On Fri, Jul 2, 2010 at 9:25 PM, Richard Elling rich...@nexenta.com wrote: On Jul 2, 2010, at 6:48 PM, Tim Cook wrote: Given that the most basic of functionality was broken in Nexenta, and not Opensolaris, and I couldn't get a single response, I have a hard time recommending ANYONE go to

Re: [zfs-discuss] NexentaStor 3.0.3 vs OpenSolaris - Patches more up to date?

2010-07-02 Thread James C. McPherson
On 3/07/10 12:25 PM, Richard Elling wrote: On Jul 2, 2010, at 6:48 PM, Tim Cook wrote: Given that the most basic of functionality was broken in Nexenta, and not Opensolaris, and I couldn't get a single response, I have a hard time recommending ANYONE go to Nexenta. It's great they're

Re: [zfs-discuss] NexentaStor 3.0.3 vs OpenSolaris - Patches more up to date?

2010-07-02 Thread Tim Cook
On Fri, Jul 2, 2010 at 9:55 PM, James C. McPherson j...@opensolaris.orgwrote: On 3/07/10 12:25 PM, Richard Elling wrote: On Jul 2, 2010, at 6:48 PM, Tim Cook wrote: Given that the most basic of functionality was broken in Nexenta, and not Opensolaris, and I couldn't get a single response,