similar to: Mixing RAID levels in a pool

New server build with Solaris-10 u5/08, on a SunFire t5220, and this is our first rollout of ZFS and Zpools. Have 8 disks, boot disk is hardware mirrored (c1t0d0 + c1t1d0) Created Zpool my_pool as RaidZ using 5 disks + 1 spare: c1t2d0, c1t3d0, c1t4d0, c1t5d0, c1t6d0, and spare c1t7d0 I am working on alerting & recovery plans for disks failures in the zpool. As a test, I have pulled disk

fun example that shows NCQ lowers wait and %w, but doesn''t have much impact on final speed. [scrubbing, devs reordered for clarity] extended device statistics device r/s w/s kr/s kw/s wait actv svc_t %w %b sd2 454.7 0.0 47168.0 0.0 0.0 5.7 12.6 0 74 sd4 440.7 0.0 45825.9 0.0 0.0 5.5 12.4 0 78 sd6 445.7 0.0

G''day, all, So, I''ve decided to migrate my home server from Linux+swRAID+LVM to Solaris+ZFS, because it seems to hold much better promise for data integrity, which is my primary concern. However, naturally, I decided to do some benchmarks in the process, and I don''t understand why the results are what they are. I though I had a reasonable understanding of ZFS, but now

Hi experts zpool import shows some weird config of an old zpool bash-3.00# zpool import pool: data1 id: 7539031628606861598 state: FAULTED status: One or more devices are missing from the system. action: The pool cannot be imported. Attach the missing devices and try again. see: http://www.sun.com/msg/ZFS-8000-3C config: data1 UNAVAIL insufficient replicas

Hi all, Sorry for the newbie question, but I''ve looked at the docs and haven''t been able to find an answer for this. I''m working with a system where the pool has already been configured and want to determine what the configuration is. I had thought that''d be with zpool status -v <poolname>, but it doesn''t seem to agree with the

Hello zfs-discuss, One of a disk started to behave strangely. Apr 11 16:07:42 thumper-9.srv sata: [ID 801593 kern.notice] NOTICE: /pci at 1,0/pci1022,7458 at 3/pci11ab,11ab at 1: Apr 11 16:07:42 thumper-9.srv port 6: device reset Apr 11 16:07:42 thumper-9.srv scsi: [ID 107833 kern.warning] WARNING: /pci at 1,0/pci1022,7458 at 3/pci11ab,11ab at 1/disk at 6,0 (sd27): Apr 11 16:07:42 thumper-9.srv

Pre-fletching on the file and device level has been disabled yielding good results so far. We''ve lowered the number of concurrent ios from 35 to 1 causing the service times to go even lower (1 -> 8ms) but inflating actv (.4 -> 2ms). I''ve followed your recommendation in setting primarycache to metadata. I''ll have to check with our tester in the morning if it made

I''m running into a issue where there seems to be a high number of read iops hitting disks and physical free memory is fluctuating between 200MB -> 450MB out of 16GB total. We have the l2arc configured on a 32GB Intel X25-E ssd and slog on another32GB X25-E ssd. According to our tester, Oracle writes are extremely slow (high latency). Below is a snippet of iostat: r/s w/s

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

Hi, I just noticed something interesting ... don''t know whether it''s relevant or not (two commands run in succession during a ''nightly'' run): $ iostat -xnz 6 [...] extended device statistics r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device 0.0 0.3 0.0 0.8 0.0 0.0 0.2 0.2 0 0 c2t0d0 2.2

Hi, One of my colleagues was confused by the output of ''zpool status'' on a pool where a hot spare is being resilvered in after a drive failure: $ zpool status data pool: data 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:

Hi, Experts: A customer has X4500 and the boot drives mirrored (c5t0d0s0 and c5t4d0s0) by SVM, The ZFS uses the two other partitions on these two drives(c5t0d0s3 and c5t4d0s3). If we need to replace the disk drive c5t0d0, do we need to do anything on the ZFS (c5t0d0s3 and c5t4d0s3) first or just follow the regular boot drive replacement procedure? Below is the summary of their current ZFS

I am curious why zpool status reports a pool to be in the DEGRADED state after a drive in a raidz2 vdev has been successfully replaced. In this particular case drive c0t6d0 was failing so I ran, zpool offline home/c0t6d0 zpool replace home c0t6d0 c8t1d0 and after the resilvering finished the pool reports a degraded state. Hopefully this is incorrect. At this point is the vdev in question now has

Hello All, I have an issue where I have two SATA cards with 5 drives each in one zfs pool. The issue is one of the devices has been intermittently failing. The problem is that the entire box seems to lock up on occasion when this happens. I currently have the SATA cable to that device disconnected in the hopes that the box will at least stay up for now. This is a new build that I am

I have a customer who has implemented the following layout: As you can see, he has mostly raidz zvols but has one raidz2 in the same zpool. What are the implications here? Is this a bad thing to do? Please elaborate. Thanks, Scott Gaspard Scott.J.Gaspard at Sun.COM > NAME STATE READ WRITE CKSUM > > chipool1 ONLINE 0 0 0 > >

Hello all, I''m building a file server (or just a storage that I intend to access by Workgroup from primarily Windows machines) using zfs raidz2 and openindiana 148. I will be using this to stream blu-ray movies and other media, so I will be happy if I get just 20MB/s reads, which seems like a pretty low standard considering some people are getting 100+. This is my first time with OI, and

Hi, Is it possible to convert a zfs pool from a concatenation of 2 disks to a 2 way mirror without backing up the data, re-creating the pool and restoring it. i.e diskA,diskB ----> mirror(diskA,diskB) Thanks, Jeff

We have a production SunFireV240 that had a zfs mirror until this week. One of the drives (c1t3d0) in the mirror failed. The system was shutdown and the bad disk replaced without an export. I don''t know what happened next but by the time I got involved there was no evidence that the remaining good disk (c1t2d0) had ever been part of a ZFS mirror. Using dd on the raw device I can see data

how does one free segment(offset=77984887808 size=66560) on a pool that won''t import? looks like I found http://bugs.opensolaris.org/view_bug.do?bug_id=6580715 http://mail.opensolaris.org/pipermail/zfs-discuss/2007-September/042541.html when I luupgrade a ufs partition with a dvd-b62 that was bfu to b68 with a dvd of b74 it booted fine and I was doing the same thing that I had done on

Hello folks, I have strange and unusual request... I have two 300gig drives mirrored: [11:33:22] root at chrysek: /d/d2 > zpool status pool: mypool state: ONLINE scrub: none requested config: NAME STATE READ WRITE CKSUM mypool ONLINE 0 0 0 mirror ONLINE 0 0 0 c1t2d0 ONLINE 0 0 0