Messages in this thread | | | Date | Wed, 28 Jan 2004 11:54:44 +0100 | From | Jakob Oestergaard <> | Subject | Re: [Jfs-discussion] md raid + jfs + jfs_fsck |
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On Wed, Jan 28, 2004 at 10:24:14AM +0100, venom@sns.it wrote: > > > On Tue, 27 Jan 2004, Christoph Hellwig wrote: > > > > Yes, it does. But JFS should get the right size from the gendisk anyway. > > Or did you create the raid with the filesystem already existant? While that > > appears to work for a non-full ext2/ext3 filesystem it's not something you > > should do because it makes the filesystem internal bookkeeping wrong and > > you'll run into trouble with any filesystem sooner or later. > > > In most situation to create a new FS on a RAID1 MD is not an option. > It happens that you have to mirror a partition, maybe alarge one, and it > already had a filesystem on top of it. Then what should you do? > backup, mirror and then restore? Sometimes it is not possible this too. > Then you accept to deal with the possible problems...
Read The Fine Manual. :)
http://unthought.net/Software-RAID.HOWTO/Software-RAID.HOWTO-7.html#ss7.4
"Method 2" covers exactly this, for a root filesytem though, but you should be able to adapt it.
/ jakob
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