Re: [zfs-discuss] Recommendation for home NAS external JBOD

2012-06-18 Thread Koopmann, Jan-Peter
Hi Carson, I have 2 Sans Digital TR8X JBOD enclosures, and they work very well. They also make a 4-bay TR4X. http://www.sansdigital.com/towerraid/tr4xb.html http://www.sansdigital.com/towerraid/tr8xb.html looks nice! The only thing coming to mind is that according to the specifications

Re: [zfs-discuss] Recommendation for home NAS external JBOD

2012-06-18 Thread Fajar A. Nugraha
On Mon, Jun 18, 2012 at 2:19 PM, Koopmann, Jan-Peter jan-pe...@koopmann.eu wrote: Hi Carson, I have 2 Sans Digital TR8X JBOD enclosures, and they work very well. They also make a 4-bay TR4X. http://www.sansdigital.com/towerraid/tr4xb.html http://www.sansdigital.com/towerraid/tr8xb.html

Re: [zfs-discuss] Recommendation for home NAS external JBOD

2012-06-18 Thread Bob Friesenhahn
On Mon, 18 Jun 2012, Koopmann, Jan-Peter wrote: looks nice! The only thing coming to mind is that according to the specifications the enclosure is 3Gbits only. If I choose to put in a SSD with 6Gbits this would be not optimal. I looked at their site but failed to find 6GBit enclosures. But I

Re: [zfs-discuss] Recommendation for home NAS external JBOD

2012-06-18 Thread Koopmann, Jan-Peter
Hi Bob, On Mon, 18 Jun 2012, Koopmann, Jan-Peter wrote: looks nice! The only thing coming to mind is that according to the specifications the enclosure is 3Gbits only. If I choose to put in a SSD with 6Gbits this would be not optimal. I looked at their site but failed to find 6GBit

Re: [zfs-discuss] Recommendation for home NAS external JBOD

2012-06-18 Thread Bob Friesenhahn
On Mon, 18 Jun 2012, Koopmann, Jan-Peter wrote: I browsed the site and saw many 6GBit enclosures.  I also saw one with Nexenta (Solaris/zfs appliance) inside. I found several high end enclosures. Or ones with bundled RAID cards. But the equivalent of the one originally suggested I was not

[zfs-discuss] Restore destroyed snapshot ???

2012-06-18 Thread Paul Kraus
OK, I am a butt-head and accidentally destroyed my last snapshot of a replicated ZFS dataset. The dataset is NOT mounted and other than a resilver going on, there is no I/O going on to this dataset. Is there any way to roll back and get my latest snapshot back? from zpool history -i:

Re: [zfs-discuss] Occasional storm of xcalls on segkmem_zio_free

2012-06-18 Thread Sašo Kiselkov
On 06/18/2012 12:05 AM, Richard Elling wrote: You might try some of the troubleshooting techniques described in Chapter 5 of the DTtrace book by Brendan Gregg and Jim Mauro. It is not clear from your description that you are seeing the same symptoms, but the technique should apply. --

[zfs-discuss] import degraded pool/recovery tools

2012-06-18 Thread Alan Batie
I have an old opensolaris server (snv_101b) that had a drive bay fan failure. There were two mirrored volumes, each one lost a disk in the mirror (fortunately, I split the mirrors across bays). One volume was able to come up and I started resilvering, but got disk errors and failed to complete

Re: [zfs-discuss] Restore destroyed snapshot ???

2012-06-18 Thread Jim Klimov
2012-06-18 19:39, Paul Kraus wrote: OK, I am a butt-head and accidentally destroyed my last snapshot of a replicated ZFS dataset. The dataset is NOT mounted and other than a resilver going on, there is no I/O going on to this dataset. Is there any way to roll back and get my latest snapshot

[zfs-discuss] Persistent errors?

2012-06-18 Thread sol
Hello It seems as though every time I scrub my mirror I get a few megabytes of checksum errors on one disk (luckily corrected by the other). Is there some way of tracking down a problem which might be persistent? I wonder if it's anything to do with these messages which are constantly

Re: [zfs-discuss] Recommendation for home NAS external JBOD

2012-06-18 Thread Carson Gaspar
On 6/18/12 12:19 AM, Koopmann, Jan-Peter wrote: Hi Carson, I have 2 Sans Digital TR8X JBOD enclosures, and they work very well. They also make a 4-bay TR4X. http://www.sansdigital.com/towerraid/tr4xb.html http://www.sansdigital.com/towerraid/tr8xb.html looks nice! The only

Re: [zfs-discuss] Recommendation for home NAS external JBOD

2012-06-18 Thread Koopmann, Jan-Peter
Thanks. Just noticed that the Hitachi 3TB drives are not available. The 4TB ones are but with 512b emulated only. However I can get Barracudas 7200.14 with supposedly real 4k quite cheap. Anyone any experience with those? I might be getting one or two more and go for z2 instead of z1. I even

Re: [zfs-discuss] Recommendation for home NAS external JBOD

2012-06-18 Thread Carson Gaspar
On 6/18/12 4:07 PM, Koopmann, Jan-Peter wrote: Thanks. Just noticed that the Hitachi 3TB drives are not available. The 4TB ones are but with 512b emulated only. However I can get Barracudas 7200.14 with supposedly real 4k quite cheap. Anyone any experience with those? I might be getting one or

Re: [zfs-discuss] Recommendation for home NAS external JBOD

2012-06-18 Thread Timothy Coalson
What makes you think the Barracuda 7200.14 drives report 4k sectors? I gave up looking for 4kn drives, as everything I could find was 512e. I would _love_ to be wrong, as I have 8 4TB Hitachis on backorder that I would gladly replace with 4kn drives, even if I had to drop to 3TB density. I

Re: [zfs-discuss] Recommendation for home NAS external JBOD

2012-06-18 Thread Nigel W
On Mon, Jun 18, 2012 at 5:26 PM, Carson Gaspar car...@taltos.org wrote: What makes you think the Barracuda 7200.14 drives report 4k sectors? I gave up looking for 4kn drives, as everything I could find was 512e. I would _love_ to be wrong, as I have 8 4TB Hitachis on backorder that I would

Re: [zfs-discuss] Recommendation for home NAS external JBOD

2012-06-18 Thread Bob Friesenhahn
On Mon, 18 Jun 2012, Carson Gaspar wrote: What makes you think the Barracuda 7200.14 drives report 4k sectors? I gave up looking for 4kn drives, as everything I could find was 512e. I would _love_ to be wrong, as I have 8 4TB Hitachis on backorder that I would gladly replace with 4kn drives,

Re: [zfs-discuss] Recommendation for home NAS external JBOD

2012-06-18 Thread Koopmann, Jan-Peter
What makes you think the Barracuda 7200.14 drives report 4k sectors? http://www.mail-archive.com/zfs-discuss@opensolaris.org/msg48912.html Nigel stated this here a few days ago. I did not check for myself. Maybe Nigel can comment on this? As for the question why do you want 4k drives: My