On Tue, 22 May 2001, Andreas Dilger wrote:
>
> Actually, the LVM snapshot interface has (optional) hooks into the filesystem
> to ensure that it is consistent at the time the snapshot is created.
Note that this is still fundamentally a broken interface: the filesystem
may not _have_ a block device underneath it, yet you might very well like
to do defragmentation and backup none-the-less.
Also, lvm snapshots are fundamentally limited to read-only data, which
means that the LVM interfaces cannot be used for defragmentation and lazy
fsck etc anyway. You _have_ to do those at a filesystem level.
disk snapshots are useful, but they are not the answer.
Linus
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Wed May 23 2001 - 21:00:48 EST