Hi Bastian,
On Mon, Oct 19, 2009 at 04:48:44PM +0200, Bastian Friedrich wrote:
> DRBD is the Distributed Replicated Block Device, a replication service for low
> level block devices. The kernel dependent code will probably[tm] be taken
> upstream shortly, see discussions on kernel mailing list.
OK. (I'm usually waiting until the kernel part is not in Linus's tree.)
> The attached patch provides (lib)blkid detection for v08 type drbd devices
> (v08 is the current one). Two people at linbit are CC'ed.
>
> drbd may be used in "stacked" environments, such as LVM-on-DRBD-on-LVM. Due to
Well, does it mean that all (FS, LVM,...) signatures on physical
device in the "stacked" environment are on valid offsets? I don't
think so.
> that, flag BLKID_IDINFO_TOLERANT is required; also, the position of the info
> struct in idinfos seems to be critical.
It seems we can think about DRBD as about a raid device. So it should
be enough to replace the "tolerant" flag with "raid" flag and probe
for DRBD after real raids and before LVM.
(The "raid" flag has also special meaning -- when a raid is detected
nothing other is probed and the raid signature is used.)
Karel
--
Karel Zak <kzak@xxxxxxxxxx>
--
To unsubscribe from this list: send the line "unsubscribe util-linux-ng" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
