[zfs-discuss] l2arc and iscsi

2009-06-05 Thread Tobias Exner
Hi list, I'm thinking about to put the MS Exchange storage on a zfs volume via iscsi... I guess that's not a problem, but the more interesting question is if it's possible to get more performance using the l2arc function with a FusionIO Flash card... I understood the idea of the l2arc

Re: [zfs-discuss] l2arc and iscsi

2009-06-05 Thread Robert Milkowski
Hi, I'm pretty sure it will work. You should be able to easiyl test it - create an L2ARC on some device or a file and see if it is being used. -- Robert Milkowski http://milek.blogspot.com On Fri, 5 Jun 2009, Tobias Exner wrote: Hi list, I'm thinking about to put the MS Exchange storage

Re: [zfs-discuss] rpool mirroring

2009-06-05 Thread Jacob Ritorto
I've been dealing with this at an unusually high frequency these days. It's even dodgier on SPARC. My recipe has been to run format -e and first try to label as SMI. Solaris PCs sometimes complain that the disk needs fdisk partitioning and I always delete *all* partitions, exit fdisk, enter

[zfs-discuss] Recover ZFS destroyed dataset?

2009-06-05 Thread Jim Klimov
I was asked by a coworker about recovering destroyed datasets on ZFS - and whether it is possible at all? As a related question, if a filesystem dataset was recursively destroyed along with all its snapshots, is there some means to at least find some pointers whether it existed at all? I

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

2009-06-05 Thread Mark J Musante
Hi Jim, See if 'zpool history' gives you what you're looking for. Regards, markm ___ 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 Darren J Moffat
Jim Klimov wrote: 1) Is it possible to find (with zdb or any other means) whether a specific zfs dataset has ever existed on the importable valid pool? 'zpool history -il' should tell you that, plus it should tell you who deleted them and when. I don't know how to go about recovering a

Re: [zfs-discuss] l2arc and iscsi

2009-06-05 Thread Richard Elling
Tobias Exner wrote: Hi list, I'm thinking about to put the MS Exchange storage on a zfs volume via iscsi... I guess that's not a problem, but the more interesting question is if it's possible to get more performance using the l2arc function with a FusionIO Flash card... In general, yes.

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

[zfs-discuss] ZFS snapshot send/recv hangs X4540 servers

2009-06-05 Thread Brent Jones
USED AVAIL REFER MOUNTPOINT pdxfilu02/data/fs01/%20090605-00:30:00 1.74G 27.2T 208G /pdxfilu02/data/fs01/%20090605-00:30:00 On the sending side, I CAN kill the ZFS send process, but the remote side leaves its processes going, and I CANNOT kill -9 them. I also cannot reboot

Re: [zfs-discuss] rpool mirroring

2009-06-05 Thread Cindy . Swearingen
Hi Frank, This bug was filed with bugster, but I see that the opensolaris bug database is currently unavailable. I sent a note about this problem. When a root cause is determined for 6844090, then we'll see whether this particular issue is a ZFS problem or a format/fdisk problem. In any case,

Re: [zfs-discuss] [storage-discuss] ZFS snapshot send/recv hangs X4540 servers

2009-06-05 Thread Brent Jones
On Fri, Jun 5, 2009 at 2:28 PM, Mike La Spina mike.lasp...@laspina.ca wrote: Hi, I have replications between hosts and they are working fine with zfs send/recv's after upgrading to Indiana snv_111b (2009.06). Have you run the commands manually to see any messages/prompts are occurring? It

Re: [zfs-discuss] [storage-discuss] ZFS snapshot send/recv hangs X4540 servers

2009-06-05 Thread Brent Jones
On Fri, Jun 5, 2009 at 2:49 PM, Rick Romero r...@havokmon.com wrote: On Fri, 2009-06-05 at 14:45 -0700, Brent Jones wrote: On Fri, Jun 5, 2009 at 2:28 PM, Mike La Spina mike.lasp...@laspina.ca wrote: Hi, I have replications between hosts and they are working fine with zfs send/recv's

Re: [zfs-discuss] ZFS snapshot send/recv hangs X4540 servers

2009-06-05 Thread Ian Collins
Brent Jones wrote: On the sending side, I CAN kill the ZFS send process, but the remote side leaves its processes going, and I CANNOT kill -9 them. I also cannot reboot the receiving system, at init 6, the system will just hang trying to unmount the file systems. I have to physically cut power

Re: [zfs-discuss] ZFS snapshot send/recv hangs X4540 servers

2009-06-05 Thread Brent Jones
On Fri, Jun 5, 2009 at 3:25 PM, Ian Collins i...@ianshome.com wrote: Brent Jones wrote: On the sending side, I CAN kill the ZFS send process, but the remote side leaves its processes going, and I CANNOT kill -9 them. I also cannot reboot the receiving system, at init 6, the system will just

Re: [zfs-discuss] ZFS snapshot send/recv hangs X4540 servers

2009-06-05 Thread Ian Collins
Brent Jones wrote: On Fri, Jun 5, 2009 at 3:25 PM, Ian Collins i...@ianshome.com wrote: Brent Jones wrote: On the sending side, I CAN kill the ZFS send process, but the remote side leaves its processes going, and I CANNOT kill -9 them. I also cannot reboot the receiving system, at init

Re: [zfs-discuss] ZFS snapshot send/recv hangs X4540 servers

2009-06-05 Thread Tim Haley
USED AVAIL REFER MOUNTPOINT pdxfilu02/data/fs01/%20090605-00:30:00 1.74G 27.2T 208G /pdxfilu02/data/fs01/%20090605-00:30:00 On the sending side, I CAN kill the ZFS send process, but the remote side leaves its processes going, and I CANNOT kill -9 them. I also

Re: [zfs-discuss] ZFS snapshot send/recv hangs X4540 servers

2009-06-05 Thread Ian Collins
Tim Haley wrote: Brent Jones wrote: On the sending side, I CAN kill the ZFS send process, but the remote side leaves its processes going, and I CANNOT kill -9 them. I also cannot reboot the receiving system, at init 6, the system will just hang trying to unmount the file systems. I have to

Re: [zfs-discuss] ZFS snapshot send/recv hangs X4540 servers

2009-06-05 Thread Brent Jones
filesystem attempting to receive a snapshot, but I cannot stop it: $ zfs list NAME                                       USED  AVAIL  REFER  MOUNTPOINT pdxfilu02/data/fs01/%20090605-00:30:00  1.74G  27.2T   208G /pdxfilu02/data/fs01/%20090605-00:30:00 On the sending side, I CAN kill the ZFS send

Re: [zfs-discuss] ZFS snapshot send/recv hangs X4540 servers

2009-06-05 Thread Brent Jones
filesystem attempting to receive a snapshot, but I cannot stop it: $ zfs list NAME                                       USED  AVAIL  REFER  MOUNTPOINT pdxfilu02/data/fs01/%20090605-00:30:00  1.74G  27.2T   208G /pdxfilu02/data/fs01/%20090605-00:30:00 On the sending side, I CAN kill the ZFS send

[zfs-discuss] importing pool with missing slog followup

2009-06-05 Thread Paul B. Henson
My research into recovering from a pool whose slog goes MIA while the pool is off-line resulted in two possible methods, one requiring prior preparation and the other a copy of the zpool.cache including data for the failed pool. The first method is to simply dump a copy of the slog device right

[zfs-discuss] x4540 boot flash

2009-06-05 Thread Paul B. Henson
So I was looking into the boot flash feature of the newer x4540, and evidently it is simply a CompactFlash slot, with all of the disadvantages and limitations of that type of media. The sun deployment guide recommends minimizing writes to a CF boot device, in particular by NFS mounting /var from

[zfs-discuss] Intel X25-E SSD in x4500 followup

2009-06-05 Thread Paul B. Henson
So I dropped an Intel SSD in our test x4500 last week and have been playing with it a bit. Performance wise, it's great. A source code repository that took 18 minutes to check out into NFS mounted ZFS space only took 3 minutes after adding the SSD as a slog (the performance was almost as good as