Hi, What are the plans for moving ldiskfs from ext3 or ext4 to Btrfs ? Already tools are available to migrate ext3 to Btrfs. How much code modification is required to make Btrfs as ldiskfs ? Thanks, Kiran. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.lustre.org/pipermail/lustre-discuss/attachments/20080822/b02929eb/attachment.html
On Aug 22, 2008 19:51 +0530, Kiran Patil wrote:> What are the plans for moving ldiskfs from ext3 or ext4 to Btrfs ?There are no such plans. It seems unlikely that btrfs will be in a robust state for a year or two still. There are plans and work underway to allow using Lustre with the ZFS DMU as the back-end storage.> How much code modification is required to make Btrfs as ldiskfs ?No investigation has been done in this direction, so I can''t comment. Cheers, Andreas -- Andreas Dilger Sr. Staff Engineer, Lustre Group Sun Microsystems of Canada, Inc.
I wasn''t aware this existed. Thanks for sharing this with us. But it seems Oracle is implementing a parallel file system for butter-fs called CRFS (http://oss.oracle.com/projects/crfs/). Maybe this could help. On Sat, Aug 23, 2008 at 9:34 PM, Andreas Dilger <adilger at sun.com> wrote:> On Aug 22, 2008 19:51 +0530, Kiran Patil wrote: >> What are the plans for moving ldiskfs from ext3 or ext4 to Btrfs ? > > There are no such plans. It seems unlikely that btrfs will be in > a robust state for a year or two still. > > There are plans and work underway to allow using Lustre with the > ZFS DMU as the back-end storage. > >> How much code modification is required to make Btrfs as ldiskfs ? > > No investigation has been done in this direction, so I can''t comment. > > Cheers, Andreas > -- > Andreas Dilger > Sr. Staff Engineer, Lustre Group > Sun Microsystems of Canada, Inc. > > _______________________________________________ > Lustre-discuss mailing list > Lustre-discuss at lists.lustre.org > http://lists.lustre.org/mailman/listinfo/lustre-discuss >
On Aug 26, 2008 08:39 -0400, Mag Gam wrote:> I wasn''t aware this existed. Thanks for sharing this with us. But it > seems Oracle is implementing a parallel file system for butter-fs > called CRFS (http://oss.oracle.com/projects/crfs/). Maybe this could > help.No, CRFS isn''t a parallel filesystem. It is a single-server client-server filesystem that exports btrfs filesystems only. Something like NFS, but less portable, and not scalable. I discussed this with the CRFS developer, whom I know well, and there are no plans to make it a parallel filesystem. Also, looking at the feature list, it will be a long time before it is usable.> On Sat, Aug 23, 2008 at 9:34 PM, Andreas Dilger <adilger at sun.com> wrote: > > On Aug 22, 2008 19:51 +0530, Kiran Patil wrote: > >> What are the plans for moving ldiskfs from ext3 or ext4 to Btrfs ? > > > > There are no such plans. It seems unlikely that btrfs will be in > > a robust state for a year or two still. > > > > There are plans and work underway to allow using Lustre with the > > ZFS DMU as the back-end storage. > > > >> How much code modification is required to make Btrfs as ldiskfs ? > > > > No investigation has been done in this direction, so I can''t comment.Cheers, Andreas -- Andreas Dilger Sr. Staff Engineer, Lustre Group Sun Microsystems of Canada, Inc.