Re: [zfs-discuss] Any rhyme or reason to disk dev names?

itable when you could have only 7 or 15 or so devices on a single bus.  With modern busses you can have many thousands of devices on the same fabric.  So we address them by WWN.        - Garrett > > If you'd like some info about how we use devids and guids, > please refer to my presen

[zfs-discuss] Shrinking a pool, Increasing hotspares

Hey all, I have a 10 TB root pool setup like so: pool: s78 state: ONLINE scrub: resilver completed after 2h0m with 0 errors on Wed Jan 19 22:04:39 2011 config: NAME STATE READ WRITE CKSUM s78 ONLINE 0 0 0 mirror ONLINE 0

Re: [zfs-discuss] How does zil work

Thanks for your replies. Regards Victor -- 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] orignal raidz code required

Thanks Darren. -- 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] FreeBSD 8.1 out, has zfs vserion 14 and can boot from zfs

- WBR, Andrey V. Elsukov signature.asc Description: OpenPGP digital signature ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

[zfs-discuss] orignal raidz code required

Hi all, In Jeff's blog:http://blogs.sun.com/bonwick/entry/raid_z It mentions original raid-z codes are 599 lines, where can I find it to learn, current codes are a little big. regards Victor -- This message posted from opensolaris.org ___ zfs-discuss m

[zfs-discuss] zfs raidz1 and traditional raid 5 perfomrance comparision

Hi, for zfs raidz1, I know for random io, iops of a raidz1 vdev eqaul to one physical disk iops, since raidz1 is like raid5 , so is raid5 has same performance like raidz1? ie. random iops equal to one physical disk's ipos. Regards Victor -- This message posted from opensolaris.org _

[zfs-discuss] How does zil work

Hi, A basic question regarding how zil works: For asynchronous write, will zil be used? For synchronous write, and if io is small, will the whole io be place on zil? or just the pointer be save into zil? what about large size io? Regards Victor -- This message posted from opensolaris.org ___

[zfs-discuss] snapshot and space reservation

Hi, Another question regarding snapshot. If there is no space in zfs pool, will a write to zfs fail ? Is there a way to reserve space in zfs pool to be used by snapshot or clone? Regards Victor -- This message posted from opensolaris.org ___ zfs-discus

Re: [zfs-discuss] zfs sequential read performance

Hi, Thanks for the reply. So the problem of sequential read after random write problem exist in zfs. I wonder if it is a real problem, ie, for example cause longer backup time, will it be addressed in future? So I should ask anther question: is zfs suitable for an environment that has lots of da

[zfs-discuss] zfs sequential read performance

Hi experts, I am new to zfs and ask a question regarding zfs sequential peroformance: I read some blogs saying that netapp's WAFL can suffer "sequential read after random write(SRARW)" performance penalty, since zfs is also doing no update in place, can zfs has such problem? Thanks Victor -- T

Re: [zfs-discuss] Not sure how to do this in zfs

s ok, then destroy old FS It's IMHO... -- WBR, Andrey V. Elsukov ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] unsetting/resetting ZFS properties

not to all descendants. Or maybe this functional is already implemented? -- WBR, Andrey V. Elsukov ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

[zfs-discuss] atomicity of zfs rename

POSIX specification of rename(2) provides a very nice property for building atomic transcations: If the old argument points to the pathname of a file that is not a directory, the new argument shall not po

Re: [zfs-discuss] feature proposal

On Thu, 2009-07-30 at 09:33 +0100, Darren J Moffat wrote: > Roman V Shaposhnik wrote: > > On the read-only front: wouldn't it be cool to *not* run zfs sends > > explicitly but have: > > .zfs/send/ > > .zfs/sendr/- > > give you the same data automagica

Re: [zfs-discuss] feature proposal

On Wed, 2009-07-29 at 15:06 +0300, Andriy Gapon wrote: > What do you think about the following feature? > > "Subdirectory is automatically a new filesystem" property - an administrator > turns > on this magic property of a filesystem, after that every mkdir *in the root* > of > that filesystem c

[zfs-discuss] disabling showmount -e behaviour

I must admit that this question originates in the context of Sun's Storage 7210 product, which impose additional restrictions on the kind of knobs I can turn. But here's the question: suppose I have an installation where ZFS is the storage for user home directories. Since I need quotas, each direc

Re: [zfs-discuss] ZFS: unreliable for professional usage?

On Wed, 2009-02-11 at 09:49 +1300, Ian Collins wrote: > These posts do sound like someone who is blaming their parents after > breaking a new toy before reading the instructions. It looks like there's a serious denial of the fact that "bad things do happen to even the best of people" on this thre

[zfs-discuss] Re: Boot disk clone with zpool present

Regards, Mark V. Dalton This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

[zfs-discuss] Boot disk clone with zpool present

I'm hoping that this is simpler than I think it is. :-) We routinely clone our boot disks using a fairly simple script that: 1) Copies the source disk's partition layout to the target disk using [i]prtvtoc[/i], [i]fmthard[/i] and [i]installboot.[/i] 2) Using a list, runs [i]newfs[/i] against the