search for: resilver

Just look at this. I thought all the restarting resilver bugs were fixed, but it looks like something odd is still happening at the start: Status immediately after starting resilver: # zpool status pool: rc-pool state: DEGRADED status: One or more devices has experienced an unrecoverable error. An attempt was made to correct the error. App...

I know this topic has been discussed many times... but what the hell makes zpool resilvering so slow? I''m running OpenSolaris 2009.06. I have had a large number of problematic disks due to a bad production batch, leading me to resilver quite a few times, progressively replacing each disk as it dies (and now preemptively removing disks.) My complaint is that resilvering e...

Hello, I''m working with someone who replaced a failed 1TB drive (50% utilized), on an X4540 running OS build 134, and I think something must be wrong. Last Tuesday afternoon, zpool status reported: scrub: resilver in progress for 306h0m, 63.87% done, 173h7m to go and a week being 168 hours, that put completion at sometime tomorrow night. However, he just reported zpool status shows: scrub: resilver in progress for 447h26m, 65.07% done, 240h10m to go so it''s looking more like 2011 now. That can...

Hi all I''m seeing some rather bad resilver times for a pool of WD Green drives (I know, bad drives, but leave that). Does resilver go through the whole pool or just the VDEV in question? -- Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 roy at karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er d...

...you are using mirrors, then each block on disk will be 128K whenever possible. But if you''re using raidzN with a capacity of M disks (M disks useful capacity + N disks redundancy) then the block size on each individual disk will be 128K / M. Right? This is one of the reasons the raidzN resilver code is inefficient. Since you end up waiting for the slowest seek time of any one disk in the vdev, and when that''s done, the amount of data you were able to process was at most 128K. Rinse and repeat. Would it not be wise, when creating raidzN vdev''s, to increase the blocks...

So, when you add a log device to a pool, it initiates a resilver. What is it actually doing, though? Isn''t the slog a copy of the in-memory intent log? Wouldn''t it just simply replicate the data that''s in the other log, checked against what''s in RAM? And presumably there isn''t that much data in the slog so there isn...

Hello All I read this thread Resilver/scrub times? for a few minutes and I have recognize that I dont know the different between Resilvering and Scrubing. Shame on me. :-( I dont find some declarations in the man-pages and I know the command to start scrubing "zpool scrub tank" but what is the command to start resilver and w...

Is there any way to control the resliver speed? Having attached a third disk to a mirror (so I can replace the other disks with larger ones) the resilver goes at a fraction of the speed of the same operation using disk suite. However it still renders the system pretty much unusable for anything else. So I would like to control the rate of the resilver. Either slow it down a lot so that the system is still usable or tell it to go as fast as possibl...

Hi all, I recently experienced a disk failure on my home server and observed checksum errors while resilvering the pool and on the first scrub after the resilver had completed. Now everything seems fine but I''m posting this to get help with calming my nerves and detect any possible future faults. Lets start with some specs. OSOL 2009.06 Intel SASUC8i (w LSI 1.30IT FW) Gigabyte MA770-UD3 mobo w...

Hi list, Here''s my case : pool: mypool state: DEGRADED status: One or more devices is currently being resilvered. The pool will continue to function, possibly in a degraded state. action: Wait for the resilver to complete. scrub: resilver in progress for 147h19m, 100.00% done, 0h0m to go config: NAME STATE READ WRITE CKSUM filerbackup13 DEGRADED 0 0...

After several days of trying to get a 1.5TB drive to resilver and it continually restarting, I eliminated all of the snapshot-taking facilities which were enabled and 2009-10-29.14:58:41 [internal pool scrub done txg:567780] complete=0 2009-10-29.14:58:41 [internal pool scrub txg:567780] func=1 mintxg=3 maxtxg=567354 2009-10-29.16:52:53 [internal pool...

This past weekend, but holiday was ruined due to a log device "replacement" gone awry. I posted all about it here: http://jmlittle.blogspot.com/2008/05/problem-with-slogs-how-i-lost.html In a nutshell, an resilver of a single log device with itself, due to the fact one can''t remove a log device from a pool once defined, cause ZFS to fully resilver but then attach the log device as as stripe to the volume, and no longer as a log device. The subsequent pool failure was exceptionally bad as the volume...

I have a situation where my zpool (with two radiz2s) is resilvering and reaches a certain point, then starts over. There no read, write or checksum errors. The disks do have a fair amount of resilvering to do, as I''ve had a variety of disk failures. But at the core of things, there''s enough parity data to avoid data loss, and the zpool...

...k, it was mentioned that the Best Practices Guide says something like "Don''t put more than ___ disks into a single vdev." At first, I challenged this idea, because I see no reason why a 21-disk raidz3 would be bad. It seems like a good thing. I was operating on assumption that resilver time was limited by sustainable throughput of disks, which was wrong. At present, resilver time is limited by random IO, so the ZFS resilver time is typically much longer than it would be if you were resilvering the whole disk serially. But that was the only negative against 21-disk raidz3. That...

I''ve got a Thumper running snv_57 and a large ZFS pool. I recently noticed a drive throwing some read errors, so I did the right thing and zfs replaced it with a spare. Everything went well, but the resilvering process seems to be taking an eternity: # zpool status pool: bigpool state: ONLINE status: One or more devices has experienced an unrecoverable error. An attempt was made to correct the error. Applications are unaffected. action: Determine if the device needs to be replaced, and cl...

Hi, I have Dell md1200 connected to two heads ( Dell R710 ). The heads have Perc H800 card and drives are configured in Raid0 ( Virtual Disk) in the RAID controller. One of the drives had crashed and is replaced by a spare. Resilvering was triggered but fails to complete due to drives going offline. I have to reboot the head ( R710) and drives comes online. This happened repeatedly when resilver was 4% done, and again was rebooted , again hung at 27% done, etc. The issues happens with both Solaris11.1/ Omnios. Its a 100Tb...

Hi Folks.. I have a system that was inadvertently left unmirrored for root. We were able to add a mirror disk, resilver, and fix the corrupted files (nothing very interesting was corrupt, whew), but zpool status -v still shows errors.. Will this self correct when we replace the degraded disk and resilver? Or is there something else that I''m not finding that I need to do to clean up? This is Solaris 10 u...

...''d like your opinion about these issues or perhaps make bug report if necessary. In scenario where is say three raidz2 groups consisting several disks, two disks fail in different raidz-groups. You have degraded pool and two degraded raidz2 groups. Now, one replaces first disk and starts resilvering, it takes day, two days, three days, counter says 100% resilvered but new data is still written to disk being replaced, counter SHOULD update if data amount increases in group. Before that first disk is resilvered, second failed disk in second group is replaced resulting in BOTH resilver-process...

...fsbsd.vx.sk/ flash and load from it with zpool import http://puu.sh/2402E when i load zfs.ko and opensolaris.ko i see this message: Solaris: WARNING: Can''t open objset for zroot/var/crash Solaris: WARNING: Can''t open objset for zroot/var/crash zpool status: http://puu.sh/2405f resilvering freeze with: zpool status -v ............. zroot/usr:<0x28ff> zroot/usr:<0x29ff> zroot/usr:<0x2aff> zroot/var/crash:<0x0> root at Flash:/root # how i can delete or drop it fs zroot/var/crash (1m-10m size i didn`t remember) and mou...

...Samsung Spin Point 7200 RPM 32MB cache SATA HD''s (RAIDZ) Data payload initially will be around 550GB or so, (before loading any stuff from another NAS and so on) Does scrub like memory, or CPU, or both? There''s enough horsepower available, I would think. Same question applies to resilvering if I need to swap out drives at some point. [cough] I can''t wait to get this thing built! :) Regards & TIA, Your just-subscribed total ZFS n00b, -Me -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.opensolaris.org/pipermail/zfs-discus...