Re: [zfs-discuss] Permanently removing vdevs from a pool
I found this feature to be incredibly useful when managing a Digital Unix system with AdsFS. Migrating to a larger disk (or larger hardware RAID set) was a simple "add", "remove" and wait for the filesystem to clean up. This was done with multiple users online. Good Stuff ! Keep up the good work ! 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] Permanently removing vdevs from a pool
Matty wrote: On 4/20/07, George Wilson <[EMAIL PROTECTED]> wrote: This is a high priority for us and is actively being worked. Vague enough for you. :-) Sorry I can't give you anything more exact that that. Hi George, If ZFS is supposed to be part of "open"solaris, then why can't the community get additional details? What additional details would you like? We are not withholding anything -- George answered the question to the best of his knowledge. We simply aren't sure when exactly this feature will be completed. --matt ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Permanently removing vdevs from a pool
Robert Milkowski wrote: Hello George, Friday, April 20, 2007, 7:37:52 AM, you wrote: GW> This is a high priority for us and is actively being worked. GW> Vague enough for you. :-) Sorry I can't give you anything more exact GW> that that. Can you at least give us feature list being developed? Some answers to questions like: 1. evacuating a vdev resulting in a smaller pool for all raid configs - ? 2. adding new vdev and rewriting all existing data to new larger stripe - ? 3. expanding stripe width for raid-z1 and raid-z2 - ? 4. live conversion between different raid kinds on the same disk set - ? No, you will not be able to change the number of disks in a raid-z set (I think that answers questions 1-4). There is no plan to implement this feature. 5. live data migration from one disk set to another - ? Yes -- just add the new disk set, then remove the old disk set. 6. rewriting data in a dataset (not entire pool) after changing some parameters like compression, encryption, ditto blocks, ... so it will affect also already written data in a dataset. This should be both pool wise and data set wise - ? Yes. 7. de-fragmentation of a pool - ? Yes. 8. anything else ? --matt ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Permanently removing vdevs from a pool
Matty wrote: On 4/20/07, George Wilson <[EMAIL PROTECTED]> wrote: This is a high priority for us and is actively being worked. Vague enough for you. :-) Sorry I can't give you anything more exact that that. Hi George, If ZFS is supposed to be part of "open"solaris, then why can't the community get additional details? If really seems like much of the development and design of ZFS goes on behind closed doors, and the community as a whole is involved after the fact (Eric Shrock has requested feedback from list members, which is awesome!). This makes it difficult for folks to contribute, and to offer suggestions (or code) that would better ZFS as a whole. Is there a reason that more of the ZFS development discussions aren't occuring in public? I can't speak for the zpool-shrink work, but I've been inspired (partly by this post) to start collecting more input from the community regarding the use of zfs as a root file system. I've just started a blog (http://blogs.sun.com/lalt/) and I'll be putting out posts there and on this alias regarding some of the design issues that need to get resolved. So watch for it. Lori ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Permanently removing vdevs from a pool
On 4/20/07, George Wilson <[EMAIL PROTECTED]> wrote: This is a high priority for us and is actively being worked. Vague enough for you. :-) Sorry I can't give you anything more exact that that. Hi George, If ZFS is supposed to be part of "open"solaris, then why can't the community get additional details? If really seems like much of the development and design of ZFS goes on behind closed doors, and the community as a whole is involved after the fact (Eric Shrock has requested feedback from list members, which is awesome!). This makes it difficult for folks to contribute, and to offer suggestions (or code) that would better ZFS as a whole. Is there a reason that more of the ZFS development discussions aren't occuring in public? Thanks, - Ryan -- UNIX Administrator http://prefetch.net ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Permanently removing vdevs from a pool
This is a high priority for us and is actively being worked. Vague enough for you. :-) Sorry I can't give you anything more exact that that. - George Matty wrote: On 4/19/07, Mark J Musante <[EMAIL PROTECTED]> wrote: On Thu, 19 Apr 2007, Mario Goebbels wrote: > Is it possible to gracefully and permanently remove a vdev from a pool > without data loss? Is this what you're looking for? http://bugs.opensolaris.org/view_bug.do?bug_id=4852783 If so, the answer is 'not yet'. Can the ZFS team comment on how far out this feature is? There are a couple of items 9and bugs) that are preventing us from deploying ZFS, and this is one of them. Thanks for any insight, - Ryan ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Permanently removing vdevs from a pool
Mario, Until zpool remove is available, you don't have any options to remove a disk from a non-redundant pool. Currently, you can: - replace or detach a disk in a ZFS mirrored storage pool - replace a disk in a ZFS RAID-Z storage pool Please see the ZFS best practices site for more info about using redundant ZFS configurations: http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide Cindy Mario Goebbels wrote: Is it possible to gracefully and permanently remove a vdev from a pool without data loss? The type of pool in question here is a simple pool without redundancies (i.e. JBOD). The documentation mentions for instance offlining, but without going into the end results of doing that. The thing I'm looking for is an option to evacuate, for the lack of a better word, the data from a specific vdevs to the other vdevs in the pool, so the device can simply be removed. Scenarios for this would be inavailability of spares (this actually happened to me, in a fairly huge computer wholesales none the less (sad chapter)) and disk replacements in an end user scenario. Thanks. This message posted from opensolaris.org ___ 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
Re: [zfs-discuss] Permanently removing vdevs from a pool
On Thu, 2007-04-19 at 11:59 -0700, Mario Goebbels wrote: > Is it possible to gracefully and permanently remove a vdev from a pool > without data loss? Not yet. But it's on lots of people's wishlists, there's an open RFE, and members of the zfs team have said on this list that they're working on it.. Bugid is: 4852783 reduce pool capacity - Bill ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Permanently removing vdevs from a pool
On 4/19/07, Mark J Musante <[EMAIL PROTECTED]> wrote: On Thu, 19 Apr 2007, Mario Goebbels wrote: > Is it possible to gracefully and permanently remove a vdev from a pool > without data loss? Is this what you're looking for? http://bugs.opensolaris.org/view_bug.do?bug_id=4852783 If so, the answer is 'not yet'. Can the ZFS team comment on how far out this feature is? There are a couple of items 9and bugs) that are preventing us from deploying ZFS, and this is one of them. Thanks for any insight, - Ryan -- UNIX Administrator http://prefetch.net ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Permanently removing vdevs from a pool
On Thu, 19 Apr 2007, Mario Goebbels wrote: > Is it possible to gracefully and permanently remove a vdev from a pool > without data loss? Is this what you're looking for? http://bugs.opensolaris.org/view_bug.do?bug_id=4852783 If so, the answer is 'not yet'. Regards, markm ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
