similar to: pool space reservation

hi all, i''ve been using a SAN LUN as the sole member of a zpool with one additional zfs filesystem. this is a flat SAN fabric, so this LUN was available to other systems on the fabric, and one of them came up with "wrong magic number" for several drives, and, as best i can tell, the vtoc for my zpool LUN was over-written on that host via format labeling to correct the error.

Hello zfs-discuss, I wonder if ZFS will be able to take any advantage of Niagara''s built-in crypto? -- Best regards, Robert Milkowski mailto:rmilkowski at task.gda.pl http://milek.blogspot.com

Hello zfs-discuss, What would you rather propose for ZFS+ORACLE - zvols or just files from the performance standpoint? -- Best regards, Robert mailto:rmilkowski at task.gda.pl http://milek.blogspot.com

If anyone is running this configuration, I have some questions for you about Page83 data errors. This message posted from opensolaris.org

Hello zfs-discuss, Relatively low traffic to the pool but sync takes too long to complete and other operations are also not that fast. Disks are on 3510 array. zil_disable=1. bash-3.00# ptime sync real 1:21.569 user 0.001 sys 0.027 During sync zpool iostat and vmstat look like: f3-1 504G 720G 370 859 995K 10.2M misc 20.6M 52.0G 0 0

We have a Mirror setup in ZFS that''s 73GB (two internal disks on a sun fire v440). We currently are going to attach this system to an Equallogic Box, and will attach an ISCSCI LUN from the Equallogic box to the v440 of about 200gb. The Equallogic Box is configured as a Hardware Raid 50 (two hot spares for redundancy). My question is what''s the best approach to moving the ZFS

Is there an existing RFE for, what I''ll wrongly call, "recursively visable snapshots"? That is, .zfs in directories other than the dataset root. Frankly, I don''t need it available in all directories, although it''d be nice, but I do have a need for making it visiable 1 dir down from the dataset root. The problem is that while ZFS and Zones work smoothly

Hello zfs-discuss, http://milek.blogspot.com/2007/04/hw-raid-vs-zfs-software-raid-part-iii.html -- Best regards, Robert Milkowski mailto:rmilkowski at task.gda.pl http://milek.blogspot.com

Hello zfs-discuss, Just to be sure - if I create ZFS filesystems on snv_39 and then later I would want just to import that pool on S10U2 - can I safely assume it will just work (I mean nothing new to on-disk format was added or changed in last few snv releases which is not going to be in u2)? I want to put right now (I have to do it now) some data on ZFS and later I want to

Hello zfs-discuss, If you do ''zpool create -f test A B C spare D E'' and D or E contains UFS filesystem then despite of -f zpool command will complain that there is UFS file system on D. workaround: create a test pool with -f on D and E, destroy it and that create first pool with D and E as hotspares. I''ve tested it on s10u3 + patches - can someone confirm

This question is concerning ZFS. We have a Sun Fire V890 attached to a EMC disk array. Here''s are plan to incorporate ZFS: On our EMC storage array we will create 3 LUNS. Now how would ZFS be used for the best performance? What I''m trying to ask is if you have 3 LUNS and you want to create a ZFS storage pool, would it be better to have a storage pool per LUN or combine the 3

Hi zfs-discuss, I have some questions about throttling on ZFS 1) I know that throttling is activating while one sync is waiting for another. (http://blogs.sun.com/roller/page/roch?entry=the_dynamics_of_zfs) Is it possible to throttle only selected processes (e.g. nfsd) ? 2) How can I obtain some statistics about it? I want to know how often throttling is activating on my host etc. 3) Is it

Is there a best practice guide for using zfs as a basic rackable small storage solution? I''m considering zfs with a 2U 12 disk Xeon based server system vs something like a second hand FAS250. Target enviroment is mixature of Xen or VI hosts via iSCSI and nfs/cifs. Being able to take snapshots of running (or maybe paused) xen iscsi vols and re-export then for cloning and remote backup

hi all, I am hoping to move roughly 1TB of maildir format email to ZFS, but I am unsure of what the most appropriate disk configuration on a 3510 would be. based on the desired level of redundancy and usable space, my thought was to create a pool consisting of 2x RAID-Z vdevs (either double parity, or single parity with two hot-spares). using 300GB drives this would give roughly 2.4TB of usable

Hello zfs-discuss, I''m writing a script to do automatically snapshots and destroy old one. I think it would be great to add to zfs destroy another option so only snapshots can be destroyed. Something like: zfs destroy -s SNAPSHOT so if something other than snapshot is provided as an argument zfs destroy wouldn''t actually destroy it. That way it would

All, I understand that ZFS gives you more error correction when using two LUNS from a SAN. But, does it provide you with less features than UFS does on one LUN from a SAN (i.e is it less stable). Thanks, Shawn This message posted from opensolaris.org

Hi, I don''t know if this has been discussed before, but have you thought about adding LZO compression to ZFS? One zfs-fuse user has provided a patch which implements LZO compression, and he claims better compression ratios *and* better speed than lzjb. The miniLZO library is licensed under the GPL, but the author specifically says that other licenses are available by request. Has this

Hi All, ZPOOL / ZFS commands writes EFI label on a device if we create ZPOOL/ZFS fs on it. Is it true ? I formatted a device with VTOC lable and I created a ZFS file system on it. Now which label the ZFS device has ? is it old VTOC or EFI ? After creating the ZFS file system on a VTOC labeled disk, I am seeing the following warning messages. Feb 3 07:47:00 scoobyb

for s10u2, documentation recommends 3 to 9 devices in raidz. what is the basis for this recommendation? i assume it is performance and not failure resilience, but i am just guessing... [i know, recommendation was intended for people who know their raid cold, so it needed no further explanation] thanks... oz -- ozan s. yigit | oz at somanetworks.com | 416 977 1414 x 1540 I have a hard time

Hi all. A quick question about the checksum error detection routines in ZFS. Surely ZFS can decide about checksum errors in a redundant environment but what about an non-redundant one? We connected a single RAID5 array to a v440 as a NFS server and while doing backups and the like we see the "zpool status -v" checksum error counters increment once in a while. Nevertheless the