Re: [zfs-discuss] minimum physical memory requirement?

2007-10-24 Thread Ian
Is this true, that ZFS does not require more memory than any other file system? I am planning to run ZFS on a low memory system (~256MB) and I'm hoping this will be sufficient. This message posted from opensolaris.org ___ zfs-discuss mailing list zf

Re: [zfs-discuss] ZFS via Virtualized Solaris?

2008-01-07 Thread ian
benefits of ZFS such as end to end data integrity? > You could probably answer that question by changing the phrase to "Don't trust the underlying virtual hardware"! ZFS doesn't care if the storage is virtualised or not. Ian ___

[zfs-discuss] Lost intermediate snapshot; incremental backup still possible?

2008-02-07 Thread Ian
I keep my system synchronized to a USB disk from time to time. The script works by sending incremental snapshots to a pool on the USB disk, then deleting those snapshots from the source machine. A botched script ended up deleting a snapshot that was not successfully received on the USB disk.

Re: [zfs-discuss] Does a mirror increase read performance

2008-02-28 Thread ian
Jonathan Loran writes: > > Quick question: > > If I create a ZFS mirrored pool, will the read performance get a boost? Yes. I use a stripe of mirrors to get better read and write performance. Ian. ___ zfs-discuss mailing list

Re: [zfs-discuss] ZFS root compressed ?

2008-06-05 Thread ian
n inactive BE to rewrite everything with the desired > attributes (more important for copies than compression). > Would it be possible to create a new BE on a compressed filesystem and activate it? Is snap upgrade implemted yet? If so this should be quick. Ian. _

Re: [zfs-discuss] raid card vs zfs

2008-06-22 Thread ian
uld like to do that but the cost of the good raid cards has put me off; > maybe this is the solution. > The cache may give RAID cards an edge, but ZFS gives near platter speeds for its various configurations. The Thumper is a perfect example of a ZFS appliance. So yes, you can

Re: [zfs-discuss] ZFS root finally here in SNV90

2008-06-23 Thread ian
rought this up on a lengthy thread over at sysadmin-discuss a > while back and have had no one refute my assertion with credible data. > We can only hope that ZFS boot will consign this never ending layout argument to the dust of history. Ian ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] ZFS boot issues on older P3 system.

2008-06-29 Thread ian
S root can't boot (not opening the pool?) while UFS can. Ian > > > Ian Collins wrote: >> I wanted to resurrect an old dual P3 system with a couple of IDE drives >> to use as a low power quiet NIS/DHCP/FlexLM server so I tried installing >> ZFS boot from build

Re: [zfs-discuss] recovering data - howto mount rpool to newpool?

2010-03-03 Thread Ian Collins
s learned me, I should be able to import rpool to newpool. - zpool import -f rpool newpool cannot mount 'export': directory is not empty Try adding the -R option to change the root directory. -- Ian. ___ zfs-disc

Re: [zfs-discuss] recovering data - howto mount rpool to newpool?

2010-03-03 Thread Ian Collins
ou should be able to use "cfgadm -c configure sataX/Y" to configure an attached, but unconfigured drive. Or you could use failsafe boot and import/rename the old rpool. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http:

Re: [zfs-discuss] recovering data - howto mount rpool to newpool?

2010-03-03 Thread Ian Collins
Erwin Panen wrote: Ian, thanks for replying. I'll give cfgadm | grep sata a go in a minute. At the mo I've rebooted from 2009.06 livecd. Of course I can't import rpool because it's a newer zfs version :-( Any way to update zfs version on a running livecd? No, if yo

Re: [zfs-discuss] [osol-discuss] Moving Storage to opensolaris+zfs. What about backup?

2010-03-04 Thread Ian Collins
depends on the properties of the pool at the receive end or the stream. Assuming you are responding to "You can create a file container (can be sparse) and create a ZFS filesystem inside it.", there is a filesystem within a file, so you can tune the properties of

Re: [zfs-discuss] Snapshot recycle freezes system activity

2010-03-04 Thread Ian Collins
, not creating them. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] ZFS for my home RAID? Or Linux Software RAID?

2010-03-07 Thread Ian Collins
ery risky by many people here; people prefer double redundancy in groups that big with large drives. Or even triple parity with 2TB drives, see http://blogs.sun.com/ahl/entry/acm_triple_parity_raid -- Ian. ___ zfs-discuss mailing list zf

Re: [zfs-discuss] ZFS for my home RAID? Or Linux Software RAID?

2010-03-07 Thread Ian Collins
a simple vdev (either a single drive or a mirror). scp will work well, or you can export individual ZFS filesystems using the SMB or NFS protocol so they can be mounted on PCs and macs. -- Ian. ___ zfs-discuss mailing list zfs-discuss

Re: [zfs-discuss] Can you manually trigger spares?

2010-03-08 Thread Ian Collins
, replace would fail and you'd see why. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] sharenfs option rw,root=host1 don't take effect

2010-03-10 Thread Ian Collins
s to be required. This doesn't appear to be documented anywhere. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] sharenfs option rw,root=host1 don't take effect

2010-03-10 Thread Ian Collins
On 03/11/10 09:27 AM, Robert Thurlow wrote: Ian Collins wrote: On 03/11/10 05:42 AM, Andrew Daugherity wrote: I've found that when using hostnames in the sharenfs line, I had to use the FQDN; the short hostname did not work, even though both client and server were in the same DNS domai

Re: [zfs-discuss] " . . formatted using older on-disk format . ."

2010-03-10 Thread Ian Collins
ds doing. (There has been some knowledge improvement in those 6-9 mnts [I hope]) I don't think I really did any formatting at all. It's the pool format that changes, not the disk format. Another overloaded and potentially confusing term! -- Ian.

[zfs-discuss] Change a zpool to raidz

2010-03-12 Thread Ian Garbutt
I was wondering if there is any way of converting a zpool which only have one LUN in there to a raidz zpool that was 3 or more LUNS in it? Thanks -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http:

Re: [zfs-discuss] Change a zpool to raidz

2010-03-12 Thread Ian Garbutt
Thats fair enough, pity there isn't a simpler way. Many thanks -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

[zfs-discuss] Scrub not completing?

2010-03-17 Thread Ian Collins
I ran a scrub on a Solaris 10 update 8 system yesterday and it is 100% done, but not complete: scrub: scrub in progress for 23h57m, 100.00% done, 0h0m to go Any ideas? -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http

Re: [zfs-discuss] Scrub not completing?

2010-03-17 Thread Ian Collins
On 03/18/10 11:09 AM, Bill Sommerfeld wrote: On 03/17/10 14:03, Ian Collins wrote: I ran a scrub on a Solaris 10 update 8 system yesterday and it is 100% done, but not complete: scrub: scrub in progress for 23h57m, 100.00% done, 0h0m to go Don't panic. If "zpool iostat&qu

Re: [zfs-discuss] Thoughts on ZFS Pool Backup Strategies

2010-03-17 Thread Ian Collins
my own backups via send/receive. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] Is this a sensible spec for an iSCSI storgage box?

2010-03-17 Thread Ian Collins
have a couple of x4540s which use ZFS send/receive to replicate each other hourly. Ech box has about 4TB of data, with maybe 10G of changes per hour. I have run the replication every 15 minutes, but hourly is good enough for us. -- Ian. ___ zfs

Re: [zfs-discuss] Scrub not completing?

2010-03-17 Thread Ian Collins
On 03/18/10 11:09 AM, Bill Sommerfeld wrote: On 03/17/10 14:03, Ian Collins wrote: I ran a scrub on a Solaris 10 update 8 system yesterday and it is 100% done, but not complete: scrub: scrub in progress for 23h57m, 100.00% done, 0h0m to go If blocks that have already been visited are freed

Re: [zfs-discuss] Thoughts on ZFS Pool Backup Strategies

2010-03-18 Thread Ian Collins
On 03/18/10 12:07 PM, Khyron wrote: Ian, When you say you spool to tape for off-site archival, what software do you use? NetVault. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs

Re: [zfs-discuss] ZFS send and receive corruption across a WAN link?

2010-03-19 Thread Ian Collins
oss the wire which is tested to minimize the chance of inflight issues. Excpet on Sundays when we do a full send. Don't you trust the stream checksum? -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] snapshots as versioning tool

2010-03-22 Thread Ian Collins
snapshot. Not really, there is ZFS diff is in the woks, but not here yet. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] Pool vdev imbalance - getting worse?

2010-03-24 Thread Ian Collins
On 02/28/10 08:09 PM, Ian Collins wrote: I was running zpool iostat on a pool comprising a stripe of raidz2 vdevs that appears to be writing slowly and I notice a considerable imbalance of both free space and write operations. The pool is currently feeding a tape backup while receiving a

Re: [zfs-discuss] Pool vdev imbalance - getting worse?

2010-03-25 Thread Ian Collins
On 03/25/10 09:32 PM, Bruno Sousa wrote: On 24-3-2010 22:29, Ian Collins wrote: On 02/28/10 08:09 PM, Ian Collins wrote: I was running zpool iostat on a pool comprising a stripe of raidz2 vdevs that appears to be writing slowly and I notice a considerable imbalance of both free space

Re: [zfs-discuss] Pool vdev imbalance - getting worse?

2010-03-25 Thread Ian Collins
On 03/25/10 11:23 PM, Bruno Sousa wrote: On 25-3-2010 9:46, Ian Collins wrote: On 03/25/10 09:32 PM, Bruno Sousa wrote: On 24-3-2010 22:29, Ian Collins wrote: On 02/28/10 08:09 PM, Ian Collins wrote: I was running zpool iostat on a pool comprising a stripe of

Re: [zfs-discuss] zfs send/receive - actual performance

2010-03-25 Thread Ian Collins
etter than these, try an aggregated link between the systems. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] zfs send/receive - actual performance

2010-03-25 Thread Ian Collins
significantly slower. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] ZFS RaidZ to RaidZ2

2010-03-26 Thread Ian Collins
plish this with minimal disruption? I have seen the zfs send / receive commands which seem to be what I should be using? Yes, they are the only option if you wish to preserve your filesystem properties. You will end up with a clone of your original pool's filesystems on the new pool

Re: [zfs-discuss] ZFS where to go!

2010-03-26 Thread Ian Collins
why no one on this thread has. //Svein - -- Please use a standard signature delimiter "-- " if you are going to tag on so much ASCII art and unnecessary PGP baggage! -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolari

Re: [zfs-discuss] ZFS RaidZ to RaidZ2

2010-03-26 Thread Ian Collins
On 03/27/10 11:33 AM, Richard Jahnel wrote: zfs send s...@oldpool | zfs receive newpool In the OP's case, a recursive send is in order. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/lis

Re: [zfs-discuss] *SPAM* Re: zfs send/receive - actual performance

2010-03-26 Thread Ian Collins
n dead way link aggregation has to work. See "Ordering of frames" at http://en.wikipedia.org/wiki/Link_Aggregation_Control_Protocol#Link_Aggregation_Control_Protocol Arse, thanks for reminding me Richard! A single stream will only use one

Re: [zfs-discuss] *SPAM* Re: zfs send/receive - actual performance

2010-03-27 Thread Ian Collins
On 03/27/10 08:14 PM, Svein Skogen wrote: On 26.03.2010 23:55, Ian Collins wrote: On 03/27/10 09:39 AM, Richard Elling wrote: On Mar 26, 2010, at 2:34 AM, Bruno Sousa wrote: Hi, The jumbo-frames in my case give me a boost of around 2 mb/s, so it's not that

Re: [zfs-discuss] Pool vdev imbalance - getting worse?

2010-03-27 Thread Ian Collins
imbalance data across the 2 raidz2 groups.. Or could the writes be reduced to cut the eventual resilver time when the faulted drive is replaced? -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailm

Re: [zfs-discuss] What about this status report

2010-03-27 Thread Ian Collins
? Not really. The error has been corrected. Is there specific documentation somewhere that tells how to read these status reports? If you run a scrub on a pool and an error condition is fixed, the report wil give you a URL to check. -- Ian

Re: [zfs-discuss] b134 - Mirrored rpool won't boot unless both mirrors are present

2010-03-27 Thread Ian Collins
il on an import and it took forever to import the pool, running out of memory every time. I think he eventually added significantly more memory and was able to import the pool (of course my memory sucks, so I'm sure that's not quite accurate). Maybe *you* need to add some more

Re: [zfs-discuss] Cannot replace a replacing device

2010-03-28 Thread Ian Collins
ate, where the replace wont complete. Please help - screen output below. Can you zpool clear the device? -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] zfs diff

2010-03-29 Thread Ian Collins
especially important for file systems will millions of files with relatively few changes. Or to generate the list of files for virus scanning! -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman

[zfs-discuss] Resilver observations

2010-03-30 Thread Ian Collins
esilvering causes the resilver to restart. Is that necessary? Thanks, -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] Simultaneous failure recovery

2010-03-30 Thread Ian Collins
derstanding is the spares are added when the drive is faulted, so it's an event rather then level driven action. At least I'm not the only one seeing multiple drive failures this week! -- Ian. ___ zfs-discuss mailing list zfs-discuss@openso

Re: [zfs-discuss] Simultaneous failure recovery

2010-03-31 Thread Ian Collins
e see zpool(1M)." What happens if you remove it as a spare first? -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] can't destroy snapshot

2010-03-31 Thread Ian Collins
t it's going to take me several days to get all the data back. Is there any known workaround? Exactly what commands are you running and what errors do you see? -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mai

Re: [zfs-discuss] can't destroy snapshot

2010-03-31 Thread Ian Collins
d. It hung. How long did you wait and how much data had been sent? Killing a receive can take a (long!) while if it has to free all data already written. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.o

Re: [zfs-discuss] can't destroy snapshot

2010-03-31 Thread Ian Collins
don't think compression will be on if the root of a sent filesystem tree inherits the property from its parent. I normally set compression on the the pool, then explicitly off on an any filesystems where it isn't appropriate. -- Ian.

[zfs-discuss] ZFS panic

2010-04-01 Thread Ian Collins
] fe8000d1bb90 zfs:spa_sync+29d () genunix: [ID 655072 kern.notice] fe8000d1bc40 zfs:txg_sync_thread+1f0 () genunix: [ID 655072 kern.notice] fe8000d1bc50 unix:thread_start+8 () -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http

Re: [zfs-discuss] RAID-Z with Permanent errors detected in files

2010-04-01 Thread Ian Collins
if one HDD goes down for whatever reason, the data stored over my ZFS pool / datasets should remain unharmed due to the redundancy. You don't appear to have any redundancy! How did you create the pool (should be in "zpool history")? -- Ian. ___

Re: [zfs-discuss] RAID-Z with Permanent errors detected in files

2010-04-01 Thread Ian Collins
remember exactly but maybe 119) and I kept upgrading it constantly till now. No, the command syntax has been there from the beginning.... Better luck next time! -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.o

Re: [zfs-discuss] To slice, or not to slice

2010-04-02 Thread Ian Collins
caches or buffers differently … or something like that. it's well documented. ZFS won't attempt to enable the drive's cache unless it has the physical device. See http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide#Storag

Re: [zfs-discuss] ZFS RaidZ recommendation

2010-04-08 Thread Ian Collins
ess this extrapolates to one data and N parity drives.. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] Replacing disk in zfs pool

2010-04-09 Thread Ian Collins
then intending to do zpool add tank mirror c1t14d0 c1t15d0 to add another 146GB to the pool. Please let me know if I am missing anything. That looks OK and safe. This is a production server. A failure of the pool would be fatal. To whom?? -- Ian

Re: [zfs-discuss] zfs send hangs

2010-04-09 Thread Ian Collins
The source zpool is version 22 (build 129), and the destination server is version 14 (build 111b). Consider upgrading. I used to see issues like this on Solaris before update 8 (which uses version 15). -- Ian. ___ zfs-discuss mailing list zfs-disc

Re: [zfs-discuss] Create 1 pool from 3 exising pools in mirror configuration

2010-04-10 Thread Ian Collins
On 04/11/10 11:55 AM, Harry Putnam wrote: Would you mind expanding the abbrevs: ssd zil 12arc? http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http

Re: [zfs-discuss] Why would zfs have too many errors when underlying raid array is fine?

2010-04-11 Thread Ian Collins
E: No automated response will be taken. Apr 11 22:37:42 fs9 IMPACT: Read and write I/Os cannot be serviced. Apr 11 22:37:42 fs9 REC-ACTION: Make sure the affected devices are connected, then run Apr 11 22:37:42 fs9 'zpool clear'. Anyt

Re: [zfs-discuss] Fileserver help.

2010-04-13 Thread Ian Collins
ry to setup my windows shares: http://blogs.sun.com/timthomas/entry/solaris_cifs_in_workgroup_mode With OpenSolaris, you can get the SMB server with the package manager GUI. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org

Re: [zfs-discuss] ZFS panic

2010-04-14 Thread Ian Collins
On 04/ 2/10 10:25 AM, Ian Collins wrote: Is this callstack familiar to anyone? It just happened on a Solaris 10 update 8 box: genunix: [ID 655072 kern.notice] fe8000d1b830 unix:real_mode_end+7f81 () genunix: [ID 655072 kern.notice] fe8000d1b910 unix:trap+5e6 () genunix: [ID 655072

Re: [zfs-discuss] Which build is the most stable, mainly for NAS (zfs)?

2010-04-14 Thread Ian Collins
hope it's 2010.$Autumn, I don't fancy waiting until October. Hint: the southern hemisphere does exist! As to which build is more stable, that depends what you want to do with it. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opens

Re: [zfs-discuss] ZFS mirror

2010-04-16 Thread Ian Collins
data is mirrored? Or I should use snapshots to replace that? If you add a disk as a mirror, it will be resilvered as an exact copy (mirror!) of the original. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris

Re: [zfs-discuss] ZFS mirror

2010-04-16 Thread Ian Collins
On 04/17/10 10:09 AM, Richard Elling wrote: On Apr 16, 2010, at 2:49 PM, Ian Collins wrote: On 04/17/10 09:34 AM, MstAsg wrote: I have a question. I have a disk that solaris 10& zfs is installed. I wanted to add the other disks and replace this with the other. (totally t

Re: [zfs-discuss] Making an rpool smaller?

2010-04-16 Thread Ian Collins
ct the old rpool drive This should work, right? I plan to test it on a VirtualBox instance first, but does anyone see a problem with the general steps I've laid out? It should work. You aren't changing your current rpool (and you could probably import it read only for the co

Re: [zfs-discuss] Making ZFS better: rm files/directories from snapshots

2010-04-16 Thread Ian Collins
locked up in snapshots. I've been there and it was a pain. Now I use nested filesystems for storing media files, so removing snapshots is more manageable. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] Making ZFS better: rm files/directories from snapshots

2010-04-17 Thread Ian Collins
On 04/18/10 01:25 AM, Edward Ned Harvey wrote: From: Ian Collins [mailto:i...@ianshome.com] But is a fundamental of zfs: snapshot A read-only version of a file system or volume at a given point in time. It is specified as filesys...@name or vol

[zfs-discuss] Best way to expand a raidz pool

2010-04-19 Thread Ian Garbutt
Having looked through the forum I gather that you cannot just add an additional device to to raidz pool. This being the case is what are the alternatives that I could to expand a raidz pool? Thanks Ian -- This message posted from opensolaris.org

Re: [zfs-discuss] Best way to expand a raidz pool

2010-04-19 Thread Ian Collins
On 04/19/10 08:42 PM, Ian Garbutt wrote: Having looked through the forum I gather that you cannot just add an additional device to to raidz pool. This being the case is what are the alternatives that I could to expand a raidz pool? Either replace *all* the drives with bigger ones, or add

Re: [zfs-discuss] Best way to expand a raidz pool

2010-04-19 Thread Ian Garbutt
Thats not easy for me, I have all the storage spilt up into the same size LUNS so I can't allocate larger luns and the vdev (looking at previous posts) won't give the raid protection. -- This message posted from opensolaris.org ___ zfs-discuss mailing

Re: [zfs-discuss] Best way to expand a raidz pool

2010-04-19 Thread Ian Garbutt
Get a life -- 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] Can RAIDZ disks be slices ?

2010-04-19 Thread Ian Collins
the 750GB completely. Or use the two 500GB and the 750 GB drive for the raidz. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] Can RAIDZ disks be slices ?

2010-04-19 Thread Ian Collins
drive for the raidz. And lose my existing data on those 2 500GB disks? Copy it back form the temporary pool, you are replacing your existing pool, aren't you? So you'll loose the data on it regardless. Please, at least read the post before replying:(

Re: [zfs-discuss] Can RAIDZ disks be slices ?

2010-04-19 Thread Ian Collins
x27;t take that long, so two copies with sensible pool topologies may be quicker than one with a bad one. c) you will have a spare 1TB drive to put in a USB enclosure and use for backups! -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolari

Re: [zfs-discuss] Best way to expand a raidz pool

2010-04-20 Thread Ian Garbutt
> > On Mon, Apr 19, 2010 at 1:42 > AM, Ian Garbutt < href="mailto:ian.g.garb...@newcastle.gov.uk";>ian.g.gar > b...@newcastle.gov.uk> > wrote: style="margin:0 0 0 .8ex;border-left:1px #ccc > solid;padding-left:1ex;"> > Having looked thr

Re: [zfs-discuss] [osol-discuss] Identifying what zpools are exported

2010-04-21 Thread Ian Collins
On 04/22/10 06:59 AM, Justin Lee Ewing wrote: So I can obviously see what zpools I have imported... but how do I see pools that have been exported? Kind of like being able to see deported volumes using "vxdisk -o alldgs list". "zpool import", kind of counte

Re: [zfs-discuss] ZFS Pool, what happen when disk failure

2010-04-25 Thread Ian Collins
e. The system will come up, but failure to mount any filesystems in the absent pool will cause the filesystem/local service to be in maintenance state. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] Spare in use althought disk is healthy ?

2010-04-26 Thread Ian Collins
there is no failed disk in the pool. Can anyone "interpret" this ? Is this a bug ? Was the drive c3t12d0 replaced or faulty at some point? You should be able to detach the spare. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opens

Re: [zfs-discuss] Performance drop during scrub?

2010-04-27 Thread Ian Collins
block I/O? I've found latency to be the killer rather than throughput, at lest when receiving snapshots. In normal operation, receiving an empty snapshot is a sub-second operation. While resilvering, at can take up to 30 seconds. The write speed on bigger snapshots is still acceptable. -

Re: [zfs-discuss] Performance drop during scrub?

2010-04-27 Thread Ian Collins
On 04/28/10 10:01 AM, Bob Friesenhahn wrote: On Wed, 28 Apr 2010, Ian Collins wrote: On 04/28/10 03:17 AM, Roy Sigurd Karlsbakk wrote: Hi all I have a test system with snv134 and 8x2TB drives in RAIDz2 and currently no Zil or L2ARC. I noticed the I/O speed to NFS shares on the testpool

Re: [zfs-discuss] backwards/forward compatibility

2010-04-28 Thread Ian Collins
be I am doing something wrong. May be it is just about using '-f' flag and things will work out and nothing will break. Is it? I look fwd to guidance from the community on this. Post back the output of the upgrade commands an the errors you get when impor

Re: [zfs-discuss] The next release

2010-04-28 Thread Ian Collins
? -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] Performance drop during scrub?

2010-04-29 Thread Ian Collins
, but otherwise, the scrub is most useful for discovering bit-rot in singly-redundant pools. I agree. I look after an x4500 with a poll of raidz2 vdevs that I can't run scrubs on due the the dire impact on performance. That's one reason I'd never use raidz1 in a r

Re: [zfs-discuss] Virtual to physical migration

2010-04-30 Thread Ian Collins
On 05/ 1/10 03:09 PM, devsk wrote: Looks like the X's vesa driver can only use 1600x1200 resolution and not the native 1920x1200. Asking these question on the ZFS list isn't going to get you very far. Troy the opensolaris-help list

Re: [zfs-discuss] Best practice for full stystem backup - equivelent of ufsdump/ufsrestore

2010-05-01 Thread Ian Collins
zpool 15. Wouldn't that mean it's impossible to restore your rpool using the CD? Just make sure you have an up to date live CD when you upgrade your pool. It's seldom wise to upgrade a pool too quickly after an OS upgrade, you may find an issue and have t

[zfs-discuss] First Setup

2010-05-02 Thread Ian D
Hi! We're building our first dedicated ZFS-based NAS/SAN (probably using Nexenta) and I'd like to run the specs by you all to see if you have any recommendations. All of it is already bought, but it's not too late to add to it. Dell PowerEdge R9102x Intel X7550 2GHz, 8 cores each plus Hyper

Re: [zfs-discuss] Exporting iSCSI - it's still getting all the ZFS protection, right?

2010-05-03 Thread Ian Collins
whatnot on this share, even though it is seeing junk data (NTFS on top of iSCSI...) or am I not getting any benefits from this setup at all (besides thin provisioning, things like that?) Yes, the volume is part of your pool, which ZFS looks afte

Re: [zfs-discuss] Best practice for full stystem backup - equivelent of ufsdump/ufsrestore

2010-05-03 Thread Ian Collins
pool. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] replaced disk...copy back completed but spare is in use

2010-05-04 Thread Ian Collins
"failed" drive is replaced and resilvered, you can "zpool detach" the spare. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] Best practice for full stystem backup - equivelent of ufsdump/ufsrestore

2010-05-05 Thread Ian Collins
nistration tools but under zfs its function can not be terribly different. Bob and Ian are right. I was trying to remember the last time I installed Solaris 10, and the best I can recall, it was around late fall 2007. The fine folks at Oracle have been making improvements to the product

Re: [zfs-discuss] Different devices with the same name in zpool status

2010-05-05 Thread Ian Collins
drives all matched up. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] why both dedup and compression?

2010-05-05 Thread Ian Collins
level and dedup is at the block level. Perhaps I have answered my own question. Data that don't compress also tends to be data that doesn't dedup well (media files for example). -- Ian. ___ zfs-discuss mailing list zfs-discuss@opens

Re: [zfs-discuss] Plugging in a hard drive after Solaris has booted up?

2010-05-07 Thread Ian Collins
make Solaris re-detect the hard drives and if so how? I tried format -e but it did not seem to detect the 3 drives I just plugged back in. Is this a BIOS issue? Assuming hot-swap is supported on your system, what does cfgadm report? -- Ian. ___ zfs-

Re: [zfs-discuss] Plugging in a hard drive after Solaris has booted up?

2010-05-08 Thread Ian Collins
configured ok Shows unconfigured, but I do not know what to do next to bring them online or set them back as "configured" any help is appreciated. Thanks Run |cfgadm -cconfigure |on the unconfigured Ids|, see the man page for the gory details.

Re: [zfs-discuss] Mirrored Servers

2010-05-08 Thread Ian Collins
other's data directory. Set them both up as file servers, and load balance between the two for incoming requests. How would anyone suggest doing this? It sounds like you are looking for AVS. -- Ian. ___ zfs-discuss mailing list zfs-di

Re: [zfs-discuss] Unexpected rpool mirror behavior found during testing

2010-05-11 Thread Ian Collins
org/bugdatabase/view_bug.do?bug_id=6923585 -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

[zfs-discuss] Odd dump volume panic

2010-05-12 Thread Ian Collins
a new volume and using that worked fine. This was on Solaris 10 update 8. Has anyone else seen anything like this? -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] Odd dump volume panic

2010-05-12 Thread Ian Collins
On 05/13/10 03:27 AM, Lori Alt wrote: On 05/12/10 04:29 AM, Ian Collins wrote: I just tried moving a dump volume form rpool into another pool so I used zfs send/receive to copy the volume (to keep some older dumps) then ran dumpadm -d to use the new location. This caused a panic. Nothing

Re: [zfs-discuss] Sun X4500 disk drives

2010-05-12 Thread Ian Collins
-) ). This backs up my experiences with x4500s. I have had several drives "fail" which I have taken off line and thrashed with format for a couple of days without finding any errors. Out of 9 or 10 "failures" only one was FUBAR. -- Ian.

Re: [zfs-discuss] Opteron 6100? Does it work with opensolaris?

2010-05-12 Thread Ian Collins
hips). So I would NOT expect any problems if your MB passes the Device Check tool (or whatever we're calling it nowadays). Bit of a chicken and egg that, isn't it? You need to run the tool to see if the board's worth buying and you need to buy the board

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