Re: [zfs-discuss] howto: make a pool with ashift=X

2011-05-23 Thread Jim Klimov
Well, for the sake of completeness (and perhaps to enable users of snv_151a) there should also be links to alternative methods: 1) Using a patched-source and recompiled, or an already precompiled, zpool binary, i.e.

Re: [zfs-discuss] What does dataset is busy actually mean?

2007-12-13 Thread Jim Klimov
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

Re: [zfs-discuss] Auto backup and auto restore of ZFS via Firewire drive

2007-12-17 Thread Jim Klimov
It's good he didn't mail you, now we all know some under-the-hood details via Googling ;) Thanks to both of you for this :) This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org

[zfs-discuss] SMC Webconsole 3.1 and ZFS Administration 1.0 - stacktraces in snv_b89

2008-05-29 Thread Jim Klimov
I've installed SXDE (snv_89) and found that the web console only listens on https://localhost:6789/ now, and the module for ZFS admin doesn't work. When I open the link, the left frame lists a stacktrace (below) and the right frame is plain empty. Any suggestions? I tried substituting

[zfs-discuss] Liveupgrade snv_77 with a ZFS root to snv_89

2008-05-29 Thread Jim Klimov
We have a test machine installed with a ZFS root (snv_77/x86 and rootpol/rootfs with grub support). Recently tried to update it to snv_89 which (in Flag Days list) claimed more support for ZFS boot roots, but the installer disk didn't find any previously installed operating system to upgrade.

Re: [zfs-discuss] Liveupgrade snv_77 with a ZFS root to snv_89

2008-05-30 Thread Jim Klimov
You mean this: https://www.opensolaris.org/jive/thread.jspa?threadID=46626tstart=120 Elegant script, I like it, thanks :) Trying now... Some patching follows: -for fs in `zfs list -H | grep ^$ROOTPOOL/$ROOTFS | awk '{ print $1 };'` +for fs in `zfs list -H | grep ^$ROOTPOOL/$ROOTFS | grep -w

Re: [zfs-discuss] Liveupgrade snv_77 with a ZFS root to snv_89

2008-05-30 Thread Jim Klimov
Alas, didn't work so far. Can the problem be that the zfs-root disk is not the first on the controller (system boots from the grub on the older ufs-root slice), and/or that zfs is mirrored? And that I have snapshots and a data pool too? These are the boot disks (SVM mirror with ufs and grub):

Re: [zfs-discuss] SMC Webconsole 3.1 and ZFS Administration 1.0 - stacktraces in snv_b89

2008-05-30 Thread Jim Klimov
No, I did not set that property; not now, not in previous releases. Nice to see secure by default coming to the admin tools as well. Waiting for SSH to become 127.0.0.1:22 sometime... just kidding ;) Thanks for the tip! Any ideas about the stacktrace? - it's still there instead of the web-GUI

Re: [zfs-discuss] SMC Webconsole 3.1 and ZFS Administration 1.0 - stacktraces in snv_b89

2008-06-01 Thread Jim Klimov
I checked - this system has a UFS root. When installed as snv_84 and then LU'd to snv_89, and when I fiddled with these packages from various other releases, it had the stacktrace instead of the ZFS admin GUI (or the well-known smcwebserver restart effect for the older packages). This system

Re: [zfs-discuss] SMC Webconsole 3.1 and ZFS Administration 1.0 - stacktraces in snv_b89

2008-06-11 Thread Jim Klimov
Likewise. Just plain doesn't work. Not required though, since the command-line is okay and way powerful ;) And there are some more interesting challenges to work on, so I didn't push this problem any more yet. This message posted from opensolaris.org

Re: [zfs-discuss] SMC Webconsole 3.1 and ZFS Administration 1.0 - stacktraces in snv_b89

2008-06-17 Thread Jim Klimov
Interesting, we'll try that. Our server with the problem has been boxed now, so I'll check the solution when it gets on site. Thanks ahead, anyway ;) This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org

Re: [zfs-discuss] ZFS deduplication

2008-08-22 Thread Jim Klimov
Just my 2c: Is it possible to do an offline dedup, kind of like snapshotting? What I mean in practice, is: we make many Solaris full-root zones. They share a lot of data as complete files. This is kind of easy to save space - make one zone as a template, snapshot/clone its dataset, make new

Re: [zfs-discuss] ZFS deduplication

2008-08-26 Thread Jim Klimov
Ok, thank you Nils, Wade for the concise replies. After much reading I agree that the ZFS-development queued features do deserve a higher ranking on the priority list (pool-shrinking/disk-removal and user/group quotas would be my favourites), so probably the deduplication tool I'd need would,

[zfs-discuss] Can I create ZPOOL with missing disks?

2009-01-15 Thread Jim Klimov
Is it possible to create a (degraded) zpool with placeholders specified instead of actual disks (parity or mirrors)? This is possible in linux mdadm (missing keyword), so I kinda hoped this can be done in Solaris, but didn't manage to. Usecase scenario: I have a single server (or home

Re: [zfs-discuss] ZFS on partitions

2009-01-15 Thread Jim Klimov
For the sake of curiosity, is it safe to have components of two different ZFS pools on the same drive, with and without HDD write cache turned on? How will ZFS itself behave, would it turn on the disk cache if the two imported pools co-own the drive? An example is a multi-disk system like mine

Re: [zfs-discuss] Can I create ZPOOL with missing disks?

2009-01-15 Thread Jim Klimov
Thanks Tomas, I haven't checked yet, but your workaround seems feasible. I've posted an RFE and referenced your approach as a workaround. That's nearly what zpool should do under the hood, and perhaps can be done temporarily with a wrapper script to detect min(physical storage sizes) ;) //Jim

Re: [zfs-discuss] Can I create ZPOOL with missing disks?

2009-01-17 Thread Jim Klimov
Thanks to all those who helped, even despite the non-enterprise approach of this question ;) While experimenting I discovered that Solaris /tmp doesn't seem to support sparse files: mkfile -n still creates full-sized files which can either use up the swap space, or not fit there. ZFS and UFS

Re: [zfs-discuss] Can I create ZPOOL with missing disks?

2009-01-18 Thread Jim Klimov
And one more note: while I could offline both fake drives in OpenSolaris tests, the Solaris 10u6 box refused to offline the second drive since it left the pool without parity. {code} [r...@t2k1 /]# zpool status test pool: test state: ONLINE scrub: none requested config: NAME

Re: [zfs-discuss] Can I create ZPOOL with missing disks?

2009-01-18 Thread Jim Klimov
...and, apparently, I can replace two drives at the similar time (in two commands), and resilvering goes in parallel: {code} [r...@t2k1 /]# zpool status pool pool: pool state: DEGRADED status: One or more devices could not be opened. Sufficient replicas exist for the pool to continue

[zfs-discuss] Recover ZFS destroyed dataset?

2009-06-05 Thread Jim Klimov
)? //Thanks in advance, we're expecting a busy weekend ;( //Jim Klimov -- 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] Recover ZFS destroyed dataset?

2009-06-05 Thread Jim Klimov
zpool history has shed a little light. Lots actually. The sub-dataset in question was indeed created, and at the time ludelete was run there are some entries along the lines of zfs destroy -r pond/zones/zonename. There's no precise details (names, mountpoints) about the destroyed datasets - and I

Re: [zfs-discuss] Recover ZFS destroyed dataset?

2009-06-05 Thread Jim Klimov
Hello Mark, Darren, Thank you guys for suggesting zpool history, upon which we stumbled before receiving your comments. Nonetheless, the history results are posted above. Still no luck trying to dig out the dataset data, so far. As I get it, there are no (recent) backups which is a poor

Re: [zfs-discuss] Migrating 10TB of data from NTFS is there a simple way?

2009-07-08 Thread Jim Klimov
to be renamed. Hope this helps, let us know if it does ;) //Jim Klimov -- 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] Migrating 10TB of data from NTFS is there a simple way?

2009-07-08 Thread Jim Klimov
I meant to add that due to the sheer amount of data (and time needed) to copy, you really don't want to use copying tools which abort on error, such as MS Explorer. Normally I'd suggest something like FAR in Windows or Midnight Commander in Unix to copy over networked connections (CIFS shares),

Re: [zfs-discuss] Migrating 10TB of data from NTFS is there a simple way?

2009-07-09 Thread Jim Klimov
True, correction accepted, covering my head with ashes in shame ;) We do use a custom-built package of rsync-3.0.5 with a number of their standard contributed patches applied. To be specific, these: checksum-reading.diff checksum-updating.diff detect-renamed.diff downdate.diff fileflags.diff

Re: [zfs-discuss] Very slow ZFS write speed to raw zvol

2009-07-09 Thread Jim Klimov
Do you have any older benchmarks on these cards and arrays (in their pre-ZFS life?) Perhaps this is not a ZFS regression but a hardware config issue? Perhaps there's some caching (like per-disk write-through) not enabled on the arrays? As you may know, the ability (and reliability) of such

Re: [zfs-discuss] Very slow ZFS write speed to raw zvol

2009-07-09 Thread Jim Klimov
Hmm, scratch that. Maybe. I did not first get the point that your writes to a filesystem dataset work quickly. Perhaps filesystem is (better) cached indeed, i.e. *maybe* zvol writes are synchronous and zfs writes may be cached and thus async? Try playing around with relevant dataset

Re: [zfs-discuss] zfs snapshoot of rpool/* to usb removable drives?

2009-07-09 Thread Jim Klimov
Probably better use zfs recv -nFvd first (no-write verbose mode) to be certain about your write-targets and about overwriting stuff (i.e. zfs recv -F would destroy any newer snapshots, if any - so you can first check which ones, and possibly clone/rename them first). // HTH, Jim Klimov

Re: [zfs-discuss] Booting from detached mirror disk

2009-07-09 Thread Jim Klimov
You might also want to force ZFS into accepting a faulty root pool: # zpool set failmode=continue rpool //Jim -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org

Re: [zfs-discuss] Migrating 10TB of data from NTFS is there a simple way?

2009-07-09 Thread Jim Klimov
I installed opensolaris and setup rpool as my base install on a single 1TB drive If I understand correctly, you have rpool and the data pool configured all as one pool? That's not probably what you'd really want. For one part, the bootable root pool should all be available to GRUB from a

Re: [zfs-discuss] Migrating 10TB of data from NTFS is there a simple way?

2009-07-09 Thread Jim Klimov
One more note, For example, if you were to remake the pool (as suggested above for rpool and below for raidz data pool) - where would you re-get the original data for copying over again? Of course, if you take on with the idea of buying 4 drives and building a raidz1 vdev right away, and

Re: [zfs-discuss] Very slow ZFS write speed to raw zvol

2009-07-09 Thread Jim Klimov
After reading many-many threads on ZFS performance today (top of the list in the forum, and some chains of references), I applied a bit of tuning to the server. In particular, I've set the zfs_write_limit_override to 384Mb so my cache is spooled to disks more frequently (if streaming lots of

Re: [zfs-discuss] Migrating 10TB of data from NTFS is there a simple way?

2009-07-09 Thread Jim Klimov
Trying to spare myself the expense as this is my home system so budget is a constraint. What I am trying to avoid is having multiple raidz's because every time I have another one I loose a lot of extra space to parity. Much like in raid 5. There's a common perception which I tend to share

Re: [zfs-discuss] Migrating 10TB of data from NTFS is there a simple way?

2009-07-09 Thread Jim Klimov
You might also search for OpenSolaris NAS projects. Some that I've seen previously involve nearly the same config you're building - a CF card or USB stick with the OS and a number of HDDs in a zfs pool for the data only. I am not certain which ones I've seen, but you can look for EON, and

[zfs-discuss] Strange errors in zpool scrub, Solaris 10u6 x86_64

2009-07-29 Thread Jim Klimov
I did a zpool scrub recently, and while it was running it reported errors and woed about restoring from backup. When the scrub is complete, it reports finishing with 0 errors though. On the next scrub some other errors are reported in different files. iostat -xne does report a few errors (1

Re: [zfs-discuss] sam-fs on zfs-pool

2009-07-31 Thread Jim Klimov
Hello tobex, While the original question may have been answered by posts above, I'm interested: when you say according to zfs list the zvol is 100% full, does it only mean that it uses all 20Gb on the pool (like a non-sparse uncompressed file), or does it also imply that you can't write into

Re: [zfs-discuss] sam-fs on zfs-pool

2009-07-31 Thread Jim Klimov
If I understand you right it is as you said. Here's an example and you can see what happened. The sam-fs is filled to only 6% and the zvol ist full. I'm afraid I was not clear with my question, so I'd elaborate, then. It remains standing as: during this situation, can you write new data into

Re: [zfs-discuss] sam-fs on zfs-pool

2009-07-31 Thread Jim Klimov
Concerning the reservations, here's a snip from man zfs: The reservation is kept equal to the volume's logical size to prevent unexpected behavior for consumers. Without the reservation, the volume could run out of space, resulting in undefined

[zfs-discuss] (home NAS) zfs and spinning down of drives

2009-11-04 Thread Jim Klimov
Hello all. Like many others, I've come close to making a home NAS server based on ZFS and OpenSolaris. While this is not an enterprise solution with high IOPS expectation, but rather a low-power system for storing everything I have, I plan on cramming in some 6-10 5400RPM Green drives with low

Re: [zfs-discuss] (home NAS) zfs and spinning down of drives

2009-11-04 Thread Jim Klimov
Thanks for the link, but the main concern in spinning down drives of a ZFS pool is that ZFS by default is not so idle. Every 5 to 30 seconds it closes a transaction group (TXG) which requires a synchronous write of metadata to disk. I mentioned reading many blogs/forums on the matter, and some

Re: [zfs-discuss] ZFS dedup issue

2009-12-02 Thread Jim Klimov
Hello all Sorry for bumping an old thread, but now that snv_128 is due to appear as a public DVD download, I wonder: has this fix for zfs-accounting and other issues with zfs dedup been integrated into build 128? We have a fileserver which is likely to have much redundant data and we'd like

Re: [zfs-discuss] file concatenation with ZFS copy-on-write

2010-06-15 Thread Jim Klimov
Hi all I wonder if there has been any new development on this matter over the past 6 months. Today i pondered an idea of zfs-aware mv, capable of doing zero read/write of file data when moving files between datasets of one pool. This seems like a (z)cp idea proposed in this thread and seems

Re: [zfs-discuss] file concatenation with ZFS copy-on-write

2010-06-15 Thread Jim Klimov
Hi all I wonder if there has been any new development on this matter over the past 6 months. Today i pondered an idea of zfs-aware mv, capable of doing zero read/write of file data when moving files between datasets of one pool. This seems like a (z)cp idea proposed in this thread and seems

Re: [zfs-discuss] Performance problem suggestions?

2011-05-10 Thread Jim Klimov
Well, as I wrote in other threads - i have a pool named pool on physical disks, and a compressed volume in this pool which i loopback-mount over iSCSI to make another pool named dcpool. When files in dcpool are deleted, blocks are not zeroed out by current ZFS and they are still allocated for

Re: [zfs-discuss] Tuning disk failure detection?

2011-05-10 Thread Jim Klimov
In a recent post r-mexico wrote that they had to parse system messages and manually fail the drives on a similar, though different, occasion: http://opensolaris.org/jive/message.jspa?messageID=515815#515815 -- This message posted from opensolaris.org

Re: [zfs-discuss] bootfs ID on zfs root

2011-05-11 Thread Jim Klimov
Technically bootfs ID is a string which names the root dataset, typically rpool/ROOT/solarisReleaseNameCode. This string can be passed to Solaris kernel as a parameter manually or by bootloader, otherwise a default current bootfs is read from the root pool's attributes (not dataset attributes!

Re: [zfs-discuss] Modify stmf_sbd_lu properties

2011-05-11 Thread Jim Klimov
You can try to workaround - no idea if this would really work - 0) Disable stmf and iscsi/* services 1) Create your volume's clone 2) Rename the original live volume dataset to some other name 3) Rename the clone to original dataset's name 4) Promote the clone - now for the system it SHOULD seem

Re: [zfs-discuss] Performance problem suggestions?

2011-05-11 Thread Jim Klimov
come up with an idea of a dtrace for your situation. I have little non-zero hope that the experts would also come to the web-forums and review the past month's posts and give their comments to my, your and others' questions and findings ;) //Jim Klimov -- This message posted from opensolaris.org

Re: [zfs-discuss] ZFS backup and restore

2011-05-11 Thread Jim Klimov
Sorry, I did not hit this type of error... AFAIK the pool writes during zfs receive are done by current code (i.e. ZFSv22 for you) based on data read from the backup stream. So unless there are corruptions on the pool which happened to be at the same time as you did your restore, this

Re: [zfs-discuss] bootfs ID on zfs root

2011-05-12 Thread Jim Klimov
Sorry, I guess I'm running out of reasonable ideas then. One that you can try (or already did) is installing Solaris not by JumpStart or WANBoot but from original media (DVD or Network Install) to see if the problem pertains. Maybe your flash image lacks some controller drivers, etc? (I am not

Re: [zfs-discuss] Disk space size, used, available mismatch

2011-05-12 Thread Jim Klimov
different mirrors), or RAIDZ1 when we need more space available. HTH, //Jim Klimov -- 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] Disk space size, used, available mismatch

2011-05-12 Thread Jim Klimov
Ah, yes, regarding the backdoor to root fs: if you select to have some not-quoata'ed space hogs in the same pool as your root FS, you can look into setting a reservation (and/or refreservation) for the root FS datasets. For example, if your OS installation uses 4Gb and you don't think it would

Re: [zfs-discuss] Performance problem suggestions?

2011-05-12 Thread Jim Klimov
The thing is- as far as I know the OS doesn't ask the disk to find a place to fit the data. Instead the OS tracks what space on the disk is free and then tells the disk where to write the data. Yes and no, I did not formulate my idea clearly enough, sorry for confusion ;) Yes - The disks

Re: [zfs-discuss] 350TB+ storage solution

2011-05-15 Thread Jim Klimov
or test if the theoretical warnings are valid? Thanks, //Jim Klimov -- 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] bootfs ID on zfs root

2011-05-15 Thread Jim Klimov
Small world... Never seen this problem before your post, and hit it now myself ;) We had an outage on an SXCE snv_117 server today with a data pool taking unknown time to import, so we decided to zpool import -F it. But the feature is lacking in build 117, so we imported the pool into an

Re: [zfs-discuss] ZFS ZPOOL = trash

2011-05-16 Thread Jim Klimov
Well, if this is not a root disk and the server boots at least to single-user, as you wrote above, you can try to disable auto-import of this pool. Easiest of all is to disable auto-imports of all pools by removing or renaming the file /etc/zfs/zpool.cache - it is a list of known pools for

Re: [zfs-discuss] 350TB+ storage solution

2011-05-16 Thread Jim Klimov
to be torn down and remade with another layout, which would require lots of downtime and extra space for backups ;) -- ++ || | Климов Евгений, Jim

Re: [zfs-discuss] Extremely slow zpool scrub performance

2011-05-16 Thread Jim Klimov
substantial) - now I'd get rid of this experiment much faster ;) -- ++ || | Климов Евгений, Jim Klimov | | технический директор

Re: [zfs-discuss] Extremely slow zpool scrub performance

2011-05-17 Thread Jim Klimov
, Jim Klimov | | технический директор CTO | | ЗАО ЦОС и ВТ JSC COSHT | || | +7-903-7705859 (cellular) mailto:jimkli...@cos.ru

Re: [zfs-discuss] ZFS File / Folder Management

2011-05-17 Thread Jim Klimov
many people suggest that a backup on another similar server box is superior to using tape backups - although probably using more electricity in real-time). sorry if this goes in the wrong spot i could no find Seems to have come correctly ;) HTH, //Jim Klimov -- This message posted from

Re: [zfs-discuss] Extremely slow zpool scrub performance

2011-05-17 Thread Jim Klimov
So if you bump this to 32k then the fragmented size is 512k which tells ZFS to switch to a different metaslab once it drops below this threshold. Makes sense after some more reading today ;) What happens if no metaslab has a block this large (or small) on a sufficiently full and fragmented

Re: [zfs-discuss] Monitoring disk seeks

2011-05-19 Thread Jim Klimov
-- ++ || | Климов Евгений, Jim Klimov | | технический директор CTO | | ЗАО ЦОС и ВТ JSC COSHT | || | +7-903-7705859 (cellular

Re: [zfs-discuss] Monitoring disk seeks

2011-05-19 Thread Jim Klimov
2011-05-19 17:00, Jim Klimov пишет: I am not sure you can monitor actual mechanical seeks short of debugging and interrogating the HDD firmware - because it is the last responsible logic in the chain of caching, queuing and issuing actual commands to the disk heads. For example, a long logical

Re: [zfs-discuss] Same device node appearing twice in same mirror; one faulted, one not...

2011-05-19 Thread Jim Klimov
Just a random thought: if two devices have same IDs and seem to work in turns, are you certain you have a mirror and not two paths to the same backend? A few years back I was given to support a box with sporadically failing drives which turned out to be two paths to the same external array,

[zfs-discuss] Is Dedup processing parallelized?

2011-05-20 Thread Jim Klimov
: 90%3342 MB (p) Most Frequently Used Cache Size: 9%362 MB (c-p) arc_meta_used = 2617 MB arc_meta_limit= 6144 MB arc_meta_max = 4787 MB Thanks for any insights, //Jim Klimov

[zfs-discuss] iSCSI pool timeouts during high latency moments

2011-05-22 Thread Jim Klimov
IP addresses (i.e. localhost and NIC IP) - but that would probably fail at the same bottleneck moment - or to connect to the zvol/rdsk/... directly, without iSCSI? Thanks for ideas, //Jim Klimov ___ zfs-discuss mailing list zfs-discuss

Re: [zfs-discuss] iSCSI pool timeouts during high latency moments

2011-05-22 Thread Jim Klimov
. -- ++ || | Климов Евгений, Jim Klimov | | технический директор CTO | | ЗАО ЦОС и ВТ

Re: [zfs-discuss] offline dedup

2011-05-26 Thread Jim Klimov
it ;) -- ++ || | ?? ???, Jim Klimov | | ??? CTO | | ??? ??? ? ?? JSC COSHT

Re: [zfs-discuss] optimal layout for 8x 1 TByte SATA (consumer)

2011-05-27 Thread Jim Klimov
thought about it, can't get rid of the idea ;) ... -- ++ || | Климов Евгений, Jim Klimov | | технический директор

Re: [zfs-discuss] Ensure Newly created pool is imported automatically in new BE

2011-05-27 Thread Jim Klimov
://mail.opensolaris.org/mailman/listinfo/zfs-discuss -- ++ || | Климов Евгений, Jim Klimov | | технический директор

Re: [zfs-discuss] offline dedup

2011-05-27 Thread Jim Klimov
Dan ... It would still need a complex bp_rewrite. Are you certain about that? For example, scrubbing/resilvering and fixing corrupt blocks with non-matching checksums is a post-processing operation which works on an existing pool and rewrites some blocks if needed. And it works without a

Re: [zfs-discuss] DDT sync?

2011-05-27 Thread Jim Klimov
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- boun...@opensolaris.org] On Behalf Of Frank Van Damme Op 26-05-11 13:38, Edward Ned Harvey schreef: But what if you loose it (the vdev), would there be a way to reconstruct the DDT (which you need to be able to delete old,

Re: [zfs-discuss] JBOD recommendation for ZFS usage

2011-05-30 Thread Jim Klimov
of HCL HDDs all have one connector... Still, I gess my post poses mre questions than answers, but maybe some other list readers can reply... Hint: Nexenta people seem to be good OEM friends with Supermicro, so they might know ;) HTH, //Jim Klimov

Re: [zfs-discuss] JBOD recommendation for ZFS usage

2011-05-30 Thread Jim Klimov
know ;) Yes :-) -- richard Thanks! //Jim Klimov ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] JBOD recommendation for ZFS usage

2011-05-30 Thread Jim Klimov
Tim Cook wrote: SAS drives are SAS drives, they aren't like SCSI. There aren't 20 different versions with different pinouts. Uh-huh... Reading some more articles, I think I found the answer to my question: the SAS connector seems to be dual-sided (with conductive stripes on both sides of the

Re: [zfs-discuss] JBOD recommendation for ZFS usage

2011-05-31 Thread Jim Klimov
. -- ++ || | Климов Евгений, Jim Klimov | | технический директор CTO | | ЗАО ЦОС и ВТ JSC COSHT

[zfs-discuss] Question on ZFS iSCSI

2011-05-31 Thread Jim Klimov
negligible and there are more options quickly available, such as mounting the iSCSI device on another server? Now that I hit the problem of reverting to direct volume access, this makes sense ;) Thanks in advance for ideas or clarifications, //Jim Klimov

Re: [zfs-discuss] Question on ZFS iSCSI

2011-05-31 Thread Jim Klimov
4295GB 4295GB 8389kB But lofiadm doesn't let me address that partition #1 as a separate device :( Thanks, //Jim Klimov ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs

Re: [zfs-discuss] optimal layout for 8x 1 TByte SATA (consumer)

2011-05-31 Thread Jim Klimov
of 3*4-disk-raidz1 vs 1*12-disk raidz3, so which of the tradeoffs is better - more vdevs or more parity to survive loss of ANY 3 disks vs. right 3 disks? Thanks, //Jim Klimov ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http

Re: [zfs-discuss] Ensure Newly created pool is imported automatically in new BE

2011-05-31 Thread Jim Klimov
? cheers Matt On 05/27/11 13:43, Jim Klimov wrote: Did you try it as a single command, somewhat like: zpool create -R /a -o cachefile=/a/etc/zfs/zpool.cache mypool c3d0 Using altroots and cachefile(=none) explicitly is a nearly- documented way to avoid caching pools which you

Re: [zfs-discuss] Importing Corrupted zpool never ends

2011-05-31 Thread Jim Klimov
-- ++ || | Климов Евгений, Jim Klimov | | технический директор CTO | | ЗАО ЦОС и ВТ JSC COSHT | || | +7-903-7705859 (cellular

Re: [zfs-discuss] Ensure Newly created pool is imported automatically in new BE

2011-05-31 Thread Jim Klimov
Actually if you need beadm to know about the data pool, it might be beneficial to mix both approaches - yours with bemount, and init-script to enforce the pool import on that first boot... HTH, //Jim Klimov ___ zfs-discuss mailing list zfs-discuss

Re: [zfs-discuss] not sure how to make filesystems

2011-05-31 Thread Jim Klimov
-- ++ || | Климов Евгений, Jim Klimov | | технический директор CTO | | ЗАО ЦОС и ВТ JSC COSHT

Re: [zfs-discuss] Is another drive worth anything?

2011-05-31 Thread Jim Klimov
dedicated tasks with data you're okay with losing. You can also make the rpool a three-way mirror which may increase read speeds if you have enough concurrentcy. And when one drive breaks, your rpool is still mirrored. HTH, //Jim Klimov ___ zfs-discuss

Re: [zfs-discuss] Is another drive worth anything?

2011-05-31 Thread Jim Klimov
What about writes? Writes in a mirror are deemed to be not faster than the slowest disk - all two or three drives must commit a block before it is considered written (in sync write mode), likewise for TXG sync but with some optimization by caching and write-coalescing. //Jim

Re: [zfs-discuss] Is another drive worth anything?

2011-05-31 Thread Jim Klimov
If it is powered on, then it is a warm spare :-) Warm spares are a good idea. For some platforms, you can spin down the disk so it doesn't waste energy. But I should note that we've had issues with a hot spare disk added to rpool in particular, preventing boots on Solaris 10u8. It turned

Re: [zfs-discuss] Question on ZFS iSCSI

2011-06-01 Thread Jim Klimov
Disk /dev/zvol/rdsk/pool/dcpool: 4295GB Sector size (logical/physical): 512B/512B Just to check, did you already try: zpool import -d /dev/zvol/rdsk/pool/ poolname Thanks for the sugestion. As a matter of fact, I did not try that. But it hasn't helped (possibly tue to partitioning

[zfs-discuss] How to properly read zpool iostat -v ? ;)

2011-06-01 Thread Jim Klimov
0 0 0 -- - - - - - - Thanks, //Jim Klimov ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] Should Intel X25-E not be used with a SAS Expander?

2011-06-02 Thread Jim Klimov
2011-06-02 18:40, Josh Simon ?: I was just doing some storage research and came across this http://www.nexenta.com/corp/images/stories/pdfs/hardware-supported.pdf. In that document for Nexenta (an opensolaris variant) it states that you should not use Intel X25-E SSDSA2SH032G1 SSD with a

Re: [zfs-discuss] ZFS receive checksum mismatch

2011-06-09 Thread Jim Klimov
(and/or use rsync to correct some misreceived blocks if network was faulty). -- ++ || | Климов Евгений, Jim Klimov | | технический директор

Re: [zfs-discuss] ZFS receive checksum mismatch

2011-06-09 Thread Jim Klimov
link. Took many retries, and zfs send is not strong at retrying ;) -- ++ || | Климов Евгений, Jim Klimov | | технический директор

[zfs-discuss] zpool import hangs any zfs-related programs, eats all RAM and dies in swapping hell

2011-06-10 Thread Jim Klimov
of newer OpenIndianas (148b, 151, pkg-dev repository) already? Thanks for any comments, condolenscences, insights, bugfixes ;) //Jim Klimov ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] ZFS receive checksum mismatch

2011-06-10 Thread Jim Klimov
of a single full dump, the chance of a single corruption making your (latest) backup useless would be also higher, right? Thanks for clarifications, //Jim Klimov ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman

Re: [zfs-discuss] zpool import hangs any zfs-related programs, eats all RAM and dies in swapping hell

2011-06-10 Thread Jim Klimov
2011-06-10 13:51, Jim Klimov пишет: and the system dies in swapping hell (scanrates for available pages were seen to go into millions, CPU context switches reach 200-300k/sec on a single dualcore P4) after eating the last stable-free 1-2Gb of RAM within a minute. After this the system responds

Re: [zfs-discuss] zpool import hangs any zfs-related programs, eats all RAM and dies in swapping hell

2011-06-10 Thread Jim Klimov
the LUN with sbdadm, and importing the dcpool are all wrapped in several SMF services so I can relatively easily control the presence of these pools (I can disable them from autostart by touching a file in /etc directory). Steve - Jim Klimov jimkli...@cos.ru wrote: I've captured

Re: [zfs-discuss] ZFS receive checksum mismatch

2011-06-10 Thread Jim Klimov
2011-06-10 20:58, Marty Scholes пишет: If it is true that unlike ZFS itself, the replication stream format has no redundancy (even of ECC/CRC sort), how can it be used for long-term retention on tape? It can't. I don't think it has been documented anywhere, but I believe that it has been well

[zfs-discuss] What is my pol writing? :)

2011-06-11 Thread Jim Klimov
While looking over iostats from various programs, I see that my OS HDD is busy writing, about 2Mb/sec stream all the time (at least while the dcpool import/recovery attempts are underway, but also now during a mere zdb walk). According to iostat this load stands out greatly:

Re: [zfs-discuss] ZFS receive checksum mismatch

2011-06-11 Thread Jim Klimov
? Or there is no coalescing and this is why? ;) Thanks, //Jim Klimov ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] Impact of L2ARC device failure and SSD recommendations

2011-06-11 Thread Jim Klimov
but otherwise the system should have remained remain responsive (tested failmode=continue and failmode=wait on different occasions). So I can relate - these things happen, they do annoy, and I hope they will be fixed sometime soon so that ZFS matches its docs and promises ;) //Jim Klimov

Re: [zfs-discuss] What is my pol writing? :)

2011-06-11 Thread Jim Klimov
2011-06-11 19:16, Jim Mauro пишет: Does this reveal anything; dtrace -n 'syscall::*write:entry /fds[arg0].fi_fs == zfs/ { @[execname,fds[arg0].fi_pathname]=count(); }' Alas, not much. # time dtrace -n 'syscall::*write:entry /fds[arg0].fi_fs == zfs/ {

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