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Re: [linux-lvm] ReiserFS/XFS/JFS, LVM, Raid5



On Mon, Jul 03, 2000 at 03:05:24PM +0100, Stephen C. Tweedie wrote:
> The only known problem with journaling and software raid is to do with
> the raid array rebuild code in raid1/5.  The rebuild could cause I/O
> to be done in the wrong order for the filesystem, causing clean blocks
> in the buffer cache to be flushed to disk as part of the rebuild.
> That is fixed in the 2.4 soft raid.  raid0 and LVM were never affected
> by this as they have no rebuild operation.

Note this applies only to the RAID1 in Raid 0.90 or in 2.4.
Unpatched 2.2 does Raid1 reconstruction in user space only and should be 
safe for journaling.


-Andi



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