Re: [zfs-discuss] snapshot and space reservation

On Feb 23, 2010, at 6:24 PM, v wrote: > Hi, > Another question regarding snapshot. > If there is no space in zfs pool, will a write to zfs fail ? Of course. > Is there a way to reserve space in zfs pool to be used by snapshot or clone? Snapshots are read only, so no need for a reservation. Clon

Re: [zfs-discuss] Import zpool from FreeBSD in OpenSolaris

On Tue, Feb 23, 2010 at 21:22, Bob Friesenhahn wrote: > On Wed, 24 Feb 2010, Fajar A. Nugraha wrote: > > On Wed, Feb 24, 2010 at 9:11 AM, patrik wrote: >> >>> This is "zpool import" from my machine with OpenSolaris 2009.06 (all >>> zpool's are fine in FreeBSD). Notice that the zpool named "temp

Re: [zfs-discuss] Import zpool from FreeBSD in OpenSolaris

send and receive?! -marc On Tue, Feb 23, 2010 at 9:25 PM, Thomas Burgess wrote: > When i needed to do this, the only way i could get it to work was to do > this: > > Take some disks, use a Opensolaris Live CD and label them EFI > Create a ZPOOL in FreeBSD with these disks > copy my data from fr

Re: [zfs-discuss] Import zpool from FreeBSD in OpenSolaris

When i needed to do this, the only way i could get it to work was to do this: Take some disks, use a Opensolaris Live CD and label them EFI Create a ZPOOL in FreeBSD with these disks copy my data from freebsd to the new zpool export the pool import the pool On Tue, Feb 23, 2010 at 9:11 PM, patr

[zfs-discuss] snapshot and space reservation

Hi, Another question regarding snapshot. If there is no space in zfs pool, will a write to zfs fail ? Is there a way to reserve space in zfs pool to be used by snapshot or clone? Regards Victor -- This message posted from opensolaris.org ___ zfs-discus

Re: [zfs-discuss] Import zpool from FreeBSD in OpenSolaris

On Wed, 24 Feb 2010, Fajar A. Nugraha wrote: On Wed, Feb 24, 2010 at 9:11 AM, patrik wrote: This is "zpool import" from my machine with OpenSolaris 2009.06 (all zpool's are fine in FreeBSD). Notice that the zpool named "temp" can be imported. Why not "secure" then? Is it because it is raidz1

Re: [zfs-discuss] Import zpool from FreeBSD in OpenSolaris

On 2010-02-24 03.16, Fajar A. Nugraha wrote: > On Wed, Feb 24, 2010 at 9:11 AM, patrik wrote: >> This is "zpool import" from my machine with OpenSolaris 2009.06 (all zpool's >> are fine in FreeBSD). Notice that the zpool named "temp" can be imported. >> Why not "secure" then? Is it because it is

Re: [zfs-discuss] zfs sequential read performance

Hi, Thanks for the reply. So the problem of sequential read after random write problem exist in zfs. I wonder if it is a real problem, ie, for example cause longer backup time, will it be addressed in future? So I should ask anther question: is zfs suitable for an environment that has lots of da

Re: [zfs-discuss] Import zpool from FreeBSD in OpenSolaris

On Wed, Feb 24, 2010 at 9:11 AM, patrik wrote: > This is "zpool import" from my machine with OpenSolaris 2009.06 (all zpool's > are fine in FreeBSD). Notice that the zpool named "temp" can be imported. Why > not "secure" then? Is it because it is raidz1? > status: One or more devices contains c

[zfs-discuss] Import zpool from FreeBSD in OpenSolaris

I want to import my zpool's from FreeBSD 8.0 in OpenSolaris 2009.06. After reading the few posts (links below) I was able to find on the subject, it seems like it there is a differences between FreeBSD and Solaris. FreeBSD operates on directly on the disk and Solaris creates a partion and uses t

Re: [zfs-discuss] SSDs with a SCSI SCA interface? (WHEE! MAYBE!)

Erik Trimble wrote: Miles Nordin wrote: "et" == Erik Trimble writes: et> I'd kill for a parallel SCSI -> SATA adapter thingy http://www.google.com/products?q=scsi+to+sata+converter

Re: [zfs-discuss] SSDs with a SCSI SCA interface? (WHEE! MAYBE!)

Miles Nordin wrote: "et" == Erik Trimble writes: et> I'd kill for a parallel SCSI -> SATA adapter thingy http://www.google.com/products?q=scsi+to+sata+converter _

Re: [zfs-discuss] SSDs with a SCSI SCA interface?

Miles Nordin wrote: "et" == Erik Trimble writes: et> I'd kill for a parallel SCSI -> SATA adapter thingy http://www.google.com/products?q=scsi+to+sata+converter Not quite. All of those convert from SATA-150 to 68-pin LVD Ultra160 (at best, some do just Ultra2). I nee

Re: [zfs-discuss] Adding a zfs mirror drive to rpool - new drive formats to one cylinder less

Thanks for that. It seems strange though that the two disks, which are from the same manufacturer, same model, same firmware and similar batch/serial's behave differently. I am also puzzled that the rpool disk appears to start at cylinder 0 and not 1. I did find this quote after googling for t

Re: [zfs-discuss] snv_133 - high cpu

On 23 Feb 2010, at 19:53, Bruno Sousa wrote: > The system becames really slow during the data copy using network, but i copy > data between 2 pools of the box i don't notice that issue, so probably i may > be hitting some sort of interrupt conflit in the network cards...This system > is config

Re: [zfs-discuss] [storage-discuss] Horribly bad luck with Unified Storage 7210 - hardware or software?

Hi, Just some comments on your situation , please take a look the following things : * Sometimes the hw looks the same, i'm talking specifically to the SSD's, but they can be somehow different and that may lead to some problems in the fut

Re: [zfs-discuss] shrinking a zpool - roadmap

On 23/02/2010 17:20, Richard Elling wrote: On Feb 23, 2010, at 5:10 AM, Robert Milkowski wrote: On 23/02/2010 02:52, Richard Elling wrote: On Feb 22, 2010, at 6:42 PM, Charles Hedrick wrote: I talked with our enterprise systems people recently. I don't believe they'd consid

Re: [zfs-discuss] SSDs with a SCSI SCA interface?

> "et" == Erik Trimble writes: et> I'd kill for a parallel SCSI -> SATA adapter thingy http://www.google.com/products?q=scsi+to+sata+converter pgpFP7Wm0x6aw.pgp Description: PGP signature ___ zfs-discuss mailing list zfs-discuss@opensolaris.o

Re: [zfs-discuss] zfs sequential read performance

On 23/02/2010 17:18, Richard Elling wrote: On Feb 23, 2010, at 1:00 AM, v wrote: Hi experts, I am new to zfs and ask a question regarding zfs sequential peroformance: I read some blogs saying that netapp's WAFL can suffer "sequential read after random write(SRARW)" performance penalty, si

Re: [zfs-discuss] Help with corrupted pool

On Sun, Feb 21, 2010 at 12:41, Ethan wrote: > > Update: I'm stuck. Again. > > To answer "For curiosity's sake, what happens when you remove (rename) your > dir with the symlinks?": it finds the devices on p0 with no problem, with > the symlinks directory deleted. > > After clearing the errors and

Re: [zfs-discuss] SSDs with a SCSI SCA interface?

On Tue, Feb 23, 2010 at 12:09:20PM -0800, Erik Trimble wrote: > I've got stacks of both v20z/v40z hardware, plus a whole raft of IBM > xSeries (/not/ System X) machines which really, really, really need an > SSD for improved I/O. At this point, I'd kill for a parallel SCSI -> > SATA adapter

Re: [zfs-discuss] SSDs with a SCSI SCA interface?

Al Hopper wrote: On Fri, Dec 4, 2009 at 1:06 AM, Erik Trimble > wrote: Hey folks. I've looked around quite a bit, and I can't find something like this: I have a bunch of older systems which use Ultra320 SCA hot-swap connectors for their internal

Re: [zfs-discuss] snv_133 - high cpu

The system becames really slow during the data copy using network, but i copy data between 2 pools of the box i don't notice that issue, so probably i may be hitting some sort of interrupt conflit in the network cards...This system is configured with *alot *of interfaces, being : 4 internal broadc

Re: [zfs-discuss] snv_133 - high cpu

On Tue, 23 Feb 2010, Bruno Sousa wrote: I don't have compression and deduplication enabled, but checksums are. However disabling checksums gives a 0.5 load reduction only... Since high CPU consumption is unusual, I would suspect a device driver issue. Perhaps there is an interrupt conflict s

Re: [zfs-discuss] Help with itadm commands

The iSCSI COMSTAR Port Provider is not installed by default. What release of OpenSolaris are you running? If pre snv_133 then: $ pfexec pkg install SUNWiscsit For snv_133, I think it will be: $ pfexec pkg install network/iscsi/target Regards Nigel Smith -- This message posted from openso

Re: [zfs-discuss] snv_133 - high cpu

On Tue, 23 Feb 2010, Eugen Leitl wrote: In terms of scaling, does zfs on OpenSolaris play well on multiple cores? How much disks (assuming 100 MByte/s throughput for each) would be considered pushing it for a current single-socket quadcore? In any large storage system, most disks are relativel

Re: [zfs-discuss] snv_133 - high cpu

Hi Bob, I have neither deduplication or compression enabled. The checksum are enabled, but if try to disable it i gain aroud 0.5 less load on the box, so it still seems to be to much. Bruno On 23-2-2010 20:03, Bob Friesenhahn wrote: > On Tue, 23 Feb 2010, Bruno Sousa wrote: >> Could the fact of

Re: [zfs-discuss] snv_133 - high cpu

Hi, I don't have compression and deduplication enabled, but checksums are. However disabling checksums gives a 0.5 load reduction only... Bruno On 23-2-2010 20:27, Eugen Leitl wrote: > On Tue, Feb 23, 2010 at 01:03:04PM -0600, Bob Friesenhahn wrote: > > >> Zfs can consume appreciable CPU if c

Re: [zfs-discuss] snv_133 - high cpu

On Tue, Feb 23, 2010 at 01:03:04PM -0600, Bob Friesenhahn wrote: > Zfs can consume appreciable CPU if compression, sha256 checksums, > and/or deduplication is enabled. Otherwise, substantial CPU > consumption is unexpected. In terms of scaling, does zfs on OpenSolaris play well on multiple cor

[zfs-discuss] Help with itadm commands

Hi - I'm trying to create an iscsi targe and go thru the motions of making the following LUN's available - I am not able to run the command: itadm create-target as I get the following error: bash: itadm: command not found I need to get the following dirve seen by vmware 0. c7t0d0 /p

Re: [zfs-discuss] snv_133 - high cpu

On Tue, 23 Feb 2010, Bruno Sousa wrote: Could the fact of having a RAIDZ2 configuration be the cause for such a big load on the zfs box, or maybe am i missing something ? Zfs can consume appreciable CPU if compression, sha256 checksums, and/or deduplication is enabled. Otherwise, substantial

Re: [zfs-discuss] verging OT: how to buy J4500 w/o overpriced drives

On Tue, 23 Feb 2010, matthew patton wrote: Of the "we force you to buy our overinflated drives" camp, Dell is the cheapest but also the most inefficient by far on power/space. The HP puts 70 disks in 4U. NexSan 42, and Sun 48. The clear winner here is HP. What is the performance like with H

[zfs-discuss] snv_133 - high cpu

Hi all, I'm currently evaluating the possibility of migrating a NFS server (Linux Centos 5.4 / RHEL 5.4 x64-32) based to a opensolaris box and i'm seeing some huge cpu usage in the opensolaris box. The zfs box is a Dell R710 with 2 Quad-Cores (Intel E5506 @ 2.13GHz), 16Gb ram , 2 Sun non-Raid HB

Re: [zfs-discuss] controller cache instead of dedicated ZIL device

On Feb 23, 2010, at 9:16 AM, Felix Buenemann wrote: > Hi, > > as it turns out to be pretty difficult (or expensive), to find high > performance dedicated ZIL devices, I had another thought: > > If using a RAID controller with a large cache, eg. 4GB and battery backup in > JBOD mode and using on

Re: [zfs-discuss] shrinking a zpool - roadmap

On Feb 23, 2010, at 5:10 AM, Robert Milkowski wrote: > On 23/02/2010 02:52, Richard Elling wrote: >> On Feb 22, 2010, at 6:42 PM, Charles Hedrick wrote: >> >>> I talked with our enterprise systems people recently. I don't believe >>> they'd consider ZFS until it's more flexible. Shrink is a big

Re: [zfs-discuss] zfs sequential read performance

On Feb 23, 2010, at 1:00 AM, v wrote: > Hi experts, > I am new to zfs and ask a question regarding zfs sequential peroformance: I > read some blogs saying that netapp's WAFL can suffer "sequential read after > random write(SRARW)" performance penalty, since zfs is also doing no update > in plac

[zfs-discuss] controller cache instead of dedicated ZIL device

Hi, as it turns out to be pretty difficult (or expensive), to find high performance dedicated ZIL devices, I had another thought: If using a RAID controller with a large cache, eg. 4GB and battery backup in JBOD mode and using on disk ZIL – wouldn't the controller cache work as a great ZIL a

Re: [zfs-discuss] future of OpenSolaris

On Tue, 23 Feb 2010, Joerg Schilling wrote: and what uname -s reports. It will surely report "OrkOS". Ork: 2. (Mythology) A mythical monster of varying descriptions; an ogre. [PJC] Goblins, hobgoblins, and orcs of the worst description.

[zfs-discuss] panic: assertion failed: 0 == dmu_buf_hold_array(os, object, offset, size, FALSE, FTAG, &numbufs, &dbp), file: ../../common/fs/zfs/dmu.c, line: 591

I recently upgraded a box to Solaris 10 U8. I've been getting more timeouts and I guess the Adaptec card is suspect, possibly not able to keep up, so it issues bus resets at times. It has apparently corrupted some files on the pool, and zpool status -v showed 2 files and one dataset corrupt.

Re: [zfs-discuss] verging OT: how to buy J4500 w/o overpriced drives

For those who are interested in some of the options out there. DIY DAS: Supermicro 36 bay case - $1800 Promise 16 bay JBOD VTrak J610sD - $3700 Promise VTE610sD - $7500 (SAS attached head unit with onboard raid controllers, takes JBOD expansion) The following apply to 1TB SATA drive configuratio

Re: [zfs-discuss] Opensolaris 2010.03 / snv releases

Isn't the dedupe bug fixed in svn133? -marc On Tue, Feb 23, 2010 at 9:21 AM, Jeffry Molanus wrote: > There is no clustering package for it and available source seems very old > also the de-dup bug is there iirc. So if you don't need HA cluster and > dedup.. > > BR, Jeffry > > > -Original Mes

Re: [zfs-discuss] future of OpenSolaris

Erik Trimble wrote: > But, yes, the proper way to talk all about this now is to say "Oracle" > when you mean the company, and "Sun" when you are talking about specific > brand-name products. The latter will almost certainly be restricted to > hardware - all software that I know of is having a

Re: [zfs-discuss] Opensolaris 2010.03 / snv releases

There is no clustering package for it and available source seems very old also the de-dup bug is there iirc. So if you don't need HA cluster and dedup.. BR, Jeffry > -Original Message- > From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > boun...@opensolaris.org] On Behalf

Re: [zfs-discuss] Adding a zfs mirror drive to rpool - new drive formats to one cylinder less

On Mon, 22 Feb 2010, tomwaters wrote: I have just installed open solaris 2009.6 on my server using a 250G laptop drive (using the entire drive). So, 2009.06 was based on 111b. There was a fix that went into build 117 that allows you to mirror to smaller disks if the metaslabs in zfs are sti

Re: [zfs-discuss] More performance questions [on zfs over nfs]

Harry Putnam writes: > [Note: This is a repost of question posted about 1.5 days ago that > has never appeared on the group.. at least not on my server (gmane). > Sorry if it ends up being a double whammy] Apparently I missed two informative answers by: Henrik J. Bob F. Thanks for the input...

Re: [zfs-discuss] shrinking a zpool - roadmap

On 23/02/2010 02:52, Richard Elling wrote: On Feb 22, 2010, at 6:42 PM, Charles Hedrick wrote: I talked with our enterprise systems people recently. I don't believe they'd consider ZFS until it's more flexible. Shrink is a big one, as is removing an slog. We also need to be able to expand

Re: [zfs-discuss] zfs sequential read performance

On 23/02/2010 09:00, v wrote: Hi experts, I am new to zfs and ask a question regarding zfs sequential peroformance: I read some blogs saying that netapp's WAFL can suffer "sequential read after random write(SRARW)" performance penalty, since zfs is also doing no update in place, can zfs has su

Re: [zfs-discuss] future of OpenSolaris

Hi, > Without saying anything negative about Nexenta I would strongly recommend > you go try to send a single patch to their equivalent of onnv-gate before > recommending it as any sort of replacement for OpenSolaris. Not sure what the above is intended to mean. To clear things, Nexenta project

Re: [zfs-discuss] [zones-discuss] Zones on shared storage - a warning

update on this one: a workaround if you so will, or the more appropriate way to do this is apparently to use lofiadm(1M) to create a pseudo block device comprising the file hosted on NFS and use the created lofi device (eg. /dev/lofi/1) as the device for zpool create and all subsequent I/O (thi

Re: [zfs-discuss] Abysmal ISCSI / ZFS Performance

Miles Nordin writes: >> "kth" == Kjetil Torgrim Homme writes: > >kth> the SCSI layer handles the replaying of operations after a >kth> reboot or connection failure. > > how? > > I do not think it is handled by SCSI layers, not for SAS nor iSCSI. sorry, I was inaccurate. error repor

Re: [zfs-discuss] Adding a zfs mirror drive to rpool - new drive formats to one cylinder less

Looks like an issue with the start /length of the partition table... These are the disks from "fomrat"... 8. c8t0d0 /p...@0,0/pci8086,3...@1f,2/d...@0,0 9. c8t1d0 /p...@0,0/pci8086,3...@1f,2/d...@1,0 Loking at the partitions, the existing rpool disk is formatte

Re: [zfs-discuss] Poor ZIL SLC SSD performance

On Fri, Feb 19, 2010 at 2:17 PM, Felix Buenemann wrote: > > Am 19.02.10 20:50, schrieb Bob Friesenhahn: >> >> On Fri, 19 Feb 2010, David Dyer-Bennet wrote: >> Too bad, I'm getting ~1000 IOPS with an Intel X25-M G2 MLC and around 300 with a regular USB stick, so 50 IOPS is really poor for

[zfs-discuss] zfs sequential read performance

Hi experts, I am new to zfs and ask a question regarding zfs sequential peroformance: I read some blogs saying that netapp's WAFL can suffer "sequential read after random write(SRARW)" performance penalty, since zfs is also doing no update in place, can zfs has such problem? Thanks Victor -- T