search for: c2t0d0

Hello, What is the access algorithm used within multi-component pools for a given pool, and does it change when one or more members of the pool become degraded ? examples: zpool create mtank mirror c1t0d0 c2t0d0 mirror c3t0d0 c4t0d0 mirror c5t0d0 c6t0d0 or; zpool create ztank raidz c1t0d0 c2t0d0 c3t0d0 raidz c4t0d0 c5t0d0 c6t0d0 As files are created on the filesystem within these pools, are they distributed round-robin accross the components, or do they stay with the first component till full then go...

...single drive. My setup: Compaq DL380 Host OS: CentOS 4.3 (x86) VMware Server Guest OS: Solaris Nevada Build 39 Host Memory: 4GB Guest Memory: 1.5GB Disks: 3 x 300GB Seagate SATA II drives (with ~25GB carved out of each for the Host OS) -- The commands I ran: [b]bash-3.00# zpool create sata raidz c2t0d0 c2t1d0 c2t2d0 bash-3.00# zpool list NAME SIZE USED AVAIL CAP HEALTH ALTROOT sata 838G 108K 838G 0% ONLINE - bash-3.00# zpool status pool: sata state: ONLINE scrub: none requested config: NAME STATE READ WRITE...

...s a ZFS file system built on a raidz pool of 3 disks. [b]bash-3.00# zpool status sata pool: sata state: ONLINE scrub: none requested config: NAME STATE READ WRITE CKSUM sata ONLINE 0 0 0 raidz1 ONLINE 0 0 0 c2t0d0 ONLINE 0 0 0 c2t1d0 ONLINE 0 0 0 c2t2d0 ONLINE 0 0 0 errors: No known data errors bash-3.00# zfs list sata/data NAME USED AVAIL REFER MOUNTPOINT sata/data 16.9G 533G 16.9G /data[/b] Error: [b...

...is error. Can you tell me what I did wrong? root # zpool list NAME SIZE USED AVAIL CAP HEALTH ALTROOT export 254G 230K 254G 0% ONLINE - root # echo |format Searching for disks...done AVAILABLE DISK SELECTIONS: 0. c2t0d0 <DEFAULT cyl 35497 alt 2 hd 255 sec 63> /pci at 7b,0/pci1022,7458 at 11/pci1000,3060 at 2/sd at 0,0 1. c2t2d0 <DEFAULT cyl 35497 alt 2 hd 255 sec 63> /pci at 7b,0/pci1022,7458 at 11/pci1000,3060 at 2/sd at 2,0 Specify disk (enter its number): Specify disk...

...59232496 state: FAULTED status: One or more devices contains corrupted data. action: The pool cannot be imported due to damaged devices or data. see: http://www.sun.com/msg/ZFS-8000-5E config: moonside FAULTED corrupted data raidz1 FAULTED corrupted data c2t0d0 ONLINE c2t1d0 ONLINE c2t2d0 ONLINE c2t3d0 ONLINE c2t4d0 FAULTED corrupted data c2t5d0 ONLINE c2t6d0 ONLINE Thanks, ZFS. One disk (at most, one disk and attempting to use a different SCSI connector) blew up my RAID-Z1....

I have a lot of people whispering "zfs" in my virtual ear these days, and at the same time I have an irrational attachment to xfs based entirely on its lack of the 32000 subdirectory limit. I''m not afraid of ext4''s newness, since really a lot of that stuff has been in Lustre for years. So a-benchmarking I went. Results at the bottom:

...#39;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 79.8 128.7 216.1 0.0 0.1 0.1 1.4 1 6 c1t0d0 2.0 76.8 118.1 208.6 0.0 0.1 0.1 1.2 1 4 c1t1d0 1.7 79.0 106.7 216.1 0.0 0.1 0.1 1.1 1 5 c1t2d0 2.2 78.2 128.7 209.9 0.0 0.1 0.1 1.1 1 4 c1t3d0 1.8 81.2 107.4...

...9;zpool online''. see: http://www.sun.com/msg/ZFS-8000-D3 scrub: resilver completed with 0 errors on Wed Mar 7 10:57:05 2007 config: NAME STATE READ WRITE CKSUM data DEGRADED 0 0 0 raidz1 ONLINE 0 0 0 c2t0d0 ONLINE 0 0 0 c2t1d0 ONLINE 0 0 0 c2t3d0 ONLINE 0 0 0 c3t1d0 ONLINE 0 0 0 c3t2d0 ONLINE 0 0 0 raidz1 DEGRADED 0 0 0 c0t2d0 ONLINE 0...

...ace the device with ''zpool replace''. scrub: resilver completed with 0 errors on Thu Nov 30 10:08:23 2006 config: NAME STATE READ WRITE CKSUM local DEGRADED 0 0 0 mirror DEGRADED 0 0 0 c2t0d0 OFFLINE 0 0 0 c0d0s7 ONLINE 0 0 0 errors: No known data errors -- Darren J Moffat

In my testing, I''ve found the following error: zpool status -v pool: local state: ONLINE status: One or more devices has experienced an error resulting in data corruption. Applications may be affected. action: Restore the file in question if possible. Otherwise restore the entire pool from backup. see: http://www.sun.com/msg/ZFS-8000-8A scrub: none requested

...0 c2t0d3 ONLINE 0 0 0 c2t0d7 ONLINE 0 0 0 c2t1d3 ONLINE 0 0 0 c2t0d5 ONLINE 0 0 0 c2t0d4 ONLINE 0 0 0 raidz1 ONLINE 0 0 0 c2t0d0 ONLINE 0 0 0 c2t0d2 ONLINE 0 0 0 c2t0d6 ONLINE 0 0 0 c2t1d6 ONLINE 0 0 0 c2t1d7 ONLINE 0 0 0 Yet I was still unable to add in my last drive (16 SAS drives, 15 are listed above...

1. I have a 4x18GB drive setup as RAIDZ. Now when thinking about it in terms of RAID5 I would expect to get (4-1)x18 worth of drive space, but DF -h shows 4x18. Is this a bug or do I not understand? 2. Once again thinking in RAID5 terms if I have 4X18GB and 12X9GB drives and I want to make a RAIDZ of all of them I would expect the 18GB to be treated at 9GB so the RAIDZ would be 16X9GB. Is

Hello, I have a Dell 2950 with a Perc 5/i, two 300GB 15K SAS drives in a RAID0 array. I am considering going to ZFS and I would like to get some feedback about which situation would yield the highest performance: using the Perc 5/i to provide a hardware RAID0 that is presented as a single volume to OpenSolaris, or using the drives separately and creating the RAID0 with OpenSolaris and ZFS? Or

...fig: NAME STATE READ WRITE CKSUM fserv DEGRADED 0 0 0 raidz1 DEGRADED 0 0 0 c4d0 ONLINE 0 0 0 c4d1 ONLINE 0 0 0 c5d1 ONLINE 0 0 0 c2t0d0 ONLINE 0 0 0 c3t1d0 ONLINE 0 0 0 c2t1d0 ONLINE 0 0 0 c4d0 UNAVAIL 0 0 0 cannot open errors: No known data errors This message posted from opensolaris.org

...read write read write ---------- ----- ----- ----- ----- ----- ----- tank 443G 1.60T 4 4 461K 467K raidz1 443G 1.60T 4 4 461K 467K c1t0d0 - - 1 2 227K 234K c1t1d0 - - 1 2 228K 234K c2t0d0 - - 1 2 227K 234K ---------- ----- ----- ----- ----- ----- ----- Whereas if I run it an interval, the figures even out after a few seconds. What I''m wondering is: Is there any way to get iostat to report accurate figures from a one time invocation? Alterna...

...s. Something like: zpool status pool: local state: ONLINE scrub: scrub completed with 0 errors on Sun Sep 23 04:16:33 2007 config: NAME STATE READ WRITE CKSUM NOTE local ONLINE 0 0 0 raidz1 ONLINE 0 0 0 c2t0d0 ONLINE 0 0 0 Internal SATA on left side c2t2d0 ONLINE 0 0 0 Internal SATA on right side c2t3d0 ONLINE 0 0 0 External SATA disk 1 in box on top c2t4d0 ONLINE 0 0 0 External SATA disk 2 in b...

I was trying to simply test bandwidth that Solaris/ZFS (Nevada b63) can deliver from a drive, and doing this: dd if=(raw disk) of=/dev/null gives me around 80MB/s, while dd if=(file on ZFS) of=/dev/null gives me only 35MB/s!?. I am getting basically the same result whether it is single zfs drive, mirror or a stripe (I am testing with two Seagate 7200.10 320G drives hanging off the same interface

If it''s of interest, I''ve written up some articles on my experiences of building a ZFS NAS box which you can read here: http://breden.org.uk/2008/03/02/a-home-fileserver-using-zfs/ I used CIFS to share the filesystems, but it will be a simple matter to use NFS instead: issue the command ''zfs set sharenfs=on pool/filesystem'' instead of ''zfs set

...0 433M 0 c0t0d0s7 - - 1.02K 0 61.9M 0 c0t1d0s7 - - 1.02K 0 61.9M 0 c0t2d0s7 - - 1.02K 0 62.0M 0 c0t3d0s7 - - 1.02K 0 62.0M 0 c1t0d0s7 - - 1.01K 0 61.9M 0 c2t0d0s7 - - 1.02K 0 62.0M 0 c2t1d0s7 - - 1.02K 0 61.9M 0 ------------ ----- ----- ----- ----- ----- ----- "iostat -Mnx 2" extended device statistics r/s w/s Mr/s Mw/s wait actv wsvc_t asvc_t %w %b device 10...

As mentioned last night, we''ve been reviewing a proposal for hot spare support in ZFS. Below you can find a current draft of the proposed interfaces. This has not yet been submitted for ARC review, but comments are welcome. Note that this does not include any enhanced FMA diagnosis to determine when a device is "faulted". This will come in a follow-on project, of which some