On Mon, Nov 23, 2020 at 9:18 AM Chris Murphy <li...@colorremedies.com> wrote:
> I agree with the suggestions to use a tool appropriate for this task, > and that dd isn't likely what you want. I like dd/ddrescue for the > specific case of data recovery. But for data replication, it's better > to use something that's intended for that purpose. > > Well again, is partclone truly the best option if I am not cloning a partition ? I am cloning a logical volume and not a partition. Will partclone help ? > Btrfs, it's either the seed/sprout feature. Or you can get finer > granularity with send/receive. Seed/sprout replication results in the > volume UUID's being unique, and duplicates at the Btrfs block group > level (a group of extents). It's quite fast, and skips over > unused/unallocated areas. send/receive is a bit different, there is a > stream format that isn't an exact copy of the on-disk representation > but it will copy all files and their metadata including permissions, > owner, date/time stamps and xattr. Both work on mounted file systems. > > xfs has xfs_copy > > ext4 I think it has some kind of dump facility but the man page for > dumpe2fs doesn't look like it does that. So I'm not sure. > > I don't use btrfs or xfs, and I have never heard of dumpe2fs, but I will look into it. Again, just cloning a logical volume and not a full partition. > And of course file copy tools are OK as well, though they sometimes > come with the burden/risk of many extra options. > > > I really don't want to use the copy options for something like cloning. -- Regards, Sreyan Chakravarty
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