Re: [zfs-discuss] dataset is busy when doing snapshot
Yup, that's exactly what I did last night... zoned=off mountpoint=/some/place mount unmount mountpoint=legacy zoned=on Thanks! On May 20, 2012, at 3:09 AM, Jim Klimov wrote: 2012-05-20 8:18, Anil Jangity wrote: What causes these messages? cannot create snapshot 'zones/rani/ROOT/zbe-2@migration': dataset is busy ...This is on a very old OS now snv_134b… I am working to upgrade them soon! There are zones living in zones pool, but none of the zones are running or mounted. I've had such problems a few times on snv_117 and/or older, blocking recursive snapshots and the zfs-auto-snap service, and liveupgrade (OpenSolaris SXCE) among other things, but I thought they were fixed in later releases before the last ones like yours. Essentially the workaround was to mount the offending dataset and unmount it again if it is not needed now - this clears some internal ZFS flags and allows snapshots to proceed. This could be tricky with zoned=on datasets and to an extent those with a legacy mountpoint, but those problems can be worked around (i.e. disable zoned, mount, umount, reenable zoned). Hope this helps, //Jim Klimov ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] dataset is busy when doing snapshot
What causes these messages? cannot create snapshot 'zones/rani/ROOT/zbe-2@migration': dataset is busy There are zones living in zones pool, but none of the zones are running or mounted. root@:~# zfs get -r mounted,zoned,mountpoint zones/rani NAME PROPERTYVALUESOURCE zones/ranimounted yes - zones/ranizoned off default zones/ranimountpoint /zones/rani default zones/rani/ROOT mounted no - zones/rani/ROOT zoned on local zones/rani/ROOT mountpoint legacy local zones/rani/ROOT@original mounted -- zones/rani/ROOT@original zoned -- zones/rani/ROOT@original mountpoint -- zones/rani/ROOT/zbe-2 mounted no - zones/rani/ROOT/zbe-2 zoned on local zones/rani/ROOT/zbe-2 mountpoint legacy inherited from zones/rani/ROOT root@:~# This is on a very old OS now snv_134b… I am working to upgrade them soon! ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] 2.5 to 3.5 bracket for SSD
I have a couple of Sun/Oracle x2270 boxes and am planning to get some 2.5 intel 320 SSD for the rpool. Do you happen to know what kind of bracket is required to get the 2.5 SSD to fit into the 3.5 slots? Thanks ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] scrub never finishes
On one of the pools, I started a scrub. It never finishes. At one time, I saw it go up to like 70% and then a little bit later I ran the pool status, it went back to 5% and started again. What is going on? Here is the pool layout: pool: data2 state: ONLINE scrub: scrub in progress, 35.25% done, 0h54m to go config: NAME STATE READ WRITE CKSUM data2ONLINE 0 0 0 mirror ONLINE 0 0 0 c0t12d0 ONLINE 0 0 0 c0t13d0 ONLINE 0 0 0 mirror ONLINE 0 0 0 c0t15d0 ONLINE 0 0 0 c0t16d0 ONLINE 0 0 0 errors: No known data errors Thanks ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] scrub never finishes
Oh, my hunch was right. Yup, I do have an hourly snapshot going. I'll take it out and see. Thanks! Bob Friesenhahn wrote: On Sun, 13 Jul 2008, Anil Jangity wrote: On one of the pools, I started a scrub. It never finishes. At one time, I saw it go up to like 70% and then a little bit later I ran the pool status, it went back to 5% and started again. What is going on? Here is the pool layout: Initiating a snapshot stops the scrub. I don't know if the scrub is restarted at 0%, or simply aborted. Are you taking snapshots during the scrub? Bob ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] global zone snapshots
Is it possible to give access to the snapshots of a global zone (through lofs perhaps?) into a zone? I recall that you can't just delegate a snapshot dataset into a zone yet, but was wondering if there is some lofs magic I can do? Thanks ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] zpool iostat
Why is it that the read operations are 0 but the read bandwidth is 0? What is iostat [not] accounting for? Is it the metadata reads? (Is it possible to determine what kind of metadata reads these are? I plan to have 3 disks and am debating what I should do with them, if I should do a raidz (single or double parity) or just a mirror. As per some of the blog entries, I've been reading that raidz may not be that suitable for lot of random reads. With the # of reads below, I don't see any reason why I should consider that. I would like to proceed with doing a raidz with double parity, please give me some feedback. Thanks, Anil capacity operationsbandwidth pool used avail read write read write -- - - - - - - data1 41.6G 5.67G 2 19 52.3K 198K data2 58.2G 9.83G 3 44 60.5K 180K -- - - - - - - data1 41.6G 5.66G 0 21 11.3K 151K data2 58.2G 9.83G 0 44158 140K -- - - - - - - data1 41.6G 5.66G 0 18436 117K data2 58.2G 9.83G 0 44203 149K -- - - - - - - data1 41.6G 5.66G 0 20 1.49K 167K data2 58.2G 9.83G 0 44331 154K -- - - - - - - data1 41.6G 5.66G 0 21791 166K data2 58.2G 9.83G 0 46199 167K -- - - - - - - data1 41.6G 5.66G 0 25686 364K data2 58.2G 9.83G 0 45 35.9K 152K -- - - - - - - data1 41.6G 5.66G 0 19698 129K data2 58.2G 9.83G 0 43 81 146K -- - - - - - - data1 41.6G 5.66G 0 19 1.45K 141K data2 58.2G 9.82G 0 44 59 139K -- - - - - - - data1 41.6G 5.66G 0 19436 124K data2 58.2G 9.82G 0 43 71 145K -- - - - - - - data1 41.6G 5.66G 0 21412 150K data2 58.2G 9.82G 0 41114 138K -- - - - - - - data1 41.6G 5.66G 0 20 1.35K 128K data2 58.2G 9.82G 0 47918 160K -- - - - - - - ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] zpool iostat
A three-way mirror and three disks in a double parity array are going to get you the same usable space. They are going to get you the same level of redundancy. The only difference is that the RAIDZ2 is going to consume a lot more CPU cycles calculating parity for no good cause. In this case, a three-way mirror is the way to go. Sorry, I meant to say that I will have 3 disks if I am doing raidz. If I am doing mirror, I will just have 2. Thanks for clarification on something else though, about double parity with 3 disks resulting in only 1 usable disk blocks. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] zpool iostat
I was using a 5 minute interval. I did another test with 1 second interval: data1 41.6G 5.65G 0 0 63.4K 0 data2 58.2G 9.81G 0447 0 2.31M So, the 63K read bandwidth doesn't show any read operations still. Is that still rounding? What exactly is an operation? (just any IO access?) This could just be rounding - what interval did you use for zpool? I believe 1 read per 5 seconds will be shown as '0' (rounded from 0.2); the read bandwidth in your output is very small, suggesting that something like this may be happening. Brendan I plan to have 3 disks and am debating what I should do with them, if I should do a raidz (single or double parity) or just a mirror. As per some of the blog entries, I've been reading that raidz may not be that suitable for lot of random reads. With the # of reads below, I don't see any reason why I should consider that. I would like to proceed with doing a raidz with double parity, please give me some feedback. Thanks, Anil capacity operationsbandwidth pool used avail read write read write -- - - - - - - data1 41.6G 5.67G 2 19 52.3K 198K data2 58.2G 9.83G 3 44 60.5K 180K -- - - - - - - data1 41.6G 5.66G 0 21 11.3K 151K data2 58.2G 9.83G 0 44158 140K -- - - - - - - data1 41.6G 5.66G 0 18436 117K data2 58.2G 9.83G 0 44203 149K -- - - - - - - data1 41.6G 5.66G 0 20 1.49K 167K data2 58.2G 9.83G 0 44331 154K -- - - - - - - data1 41.6G 5.66G 0 21791 166K data2 58.2G 9.83G 0 46199 167K -- - - - - - - data1 41.6G 5.66G 0 25686 364K data2 58.2G 9.83G 0 45 35.9K 152K -- - - - - - - data1 41.6G 5.66G 0 19698 129K data2 58.2G 9.83G 0 43 81 146K -- - - - - - - data1 41.6G 5.66G 0 19 1.45K 141K data2 58.2G 9.82G 0 44 59 139K -- - - - - - - data1 41.6G 5.66G 0 19436 124K data2 58.2G 9.82G 0 43 71 145K -- - - - - - - data1 41.6G 5.66G 0 21412 150K data2 58.2G 9.82G 0 41114 138K -- - - - - - - data1 41.6G 5.66G 0 20 1.35K 128K data2 58.2G 9.82G 0 47918 160K -- - - - - - - ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] ZFS layout recommendations
I have pool called data. I have zones configured in that pool. The zonepath is: /data/zone1/fs. (/data/zone1 itself is not used for anything else, by anyone, and has no other data.) There are no datasets being delegated to this zone. I want to create a snapshot that I would want to make available from within the zone. What are the best options? If I do something like: zfs snapshot data/[EMAIL PROTECTED] How do I make that snapshot available to the zone? It seems like I got two options: 1. add dataset set name=data/zone1/recover end Then: zfs send data/[EMAIL PROTECTED] | zfs recv data/zone1/[EMAIL PROTECTED] I think this option might work, but using zfs send will just send the whole data/zone1 file system which will use more disk space instead of just sending snapshots. 2. I was thinking, maybe I could do a NFS share of /data/zone1/.zfs/snapshot to zone1. Then, do a NFS client access to that file system. Thanks, hope thats clear. This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] ZFS layout recommendations
Thanks James/John! That link specifically mentions new Solaris 10 release, so I am assuming that means going from like u4 to Sol 10 u5, and that shouldn't cause a problem when doing plain patchadd's (w/o live upgrade). If so, then I am fine with those warnings and can use zfs with zones' path. So, to do that lofs mount, I could do something like: zfs set snapdir=visible data/zone1 add fs set dir=/data/zone1/.zfs set special=/data/zone1/zfsfiles set type=lofs end Then, from inside the zone, I should be able to do something like: ls /data/zone1/zfsfiles/snapshot/1hrbackup Please correct me if I am wrong. (Just want to make sure I got it right, before I go try this on this semi-production system. Unfortunately, I don't have a test system on hand to play with right now.) This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
