Date: Sun, 29 Aug 2004 16:26:57 +0200 From: Stijn Hoop <stijn@win.tue.nl> To: freebsd-questions@freebsd.org Subject: vinum revive does not rebuild parity (was vinum rebuildparity, when?) Message-ID: <20040829142657.GE7435@pcwin002.win.tue.nl> In-Reply-To: <86isb4py41.fsf@borg.borderworlds.dk> References: <20040825083123.GD17106@pcwin002.win.tue.nl> <86pt5f1qdm.fsf@borg.borderworlds.dk> <20040827093352.GB965@pcwin002.win.tue.nl> <86isb4py41.fsf@borg.borderworlds.dk>
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On Fri, Aug 27, 2004 at 02:24:46PM +0200, Christian Laursen wrote:
> Stijn Hoop <stijn@win.tue.nl> writes:
> > On Wed, Aug 25, 2004 at 12:08:53PM +0200, Christian Laursen wrote:
> > > When reviving a disk the data on that disk is calculated from the data
> > > and the parity on the other disks.
> >=20
> > Yes, but the parity should be recalculated at the same time, right?
>=20
> Yes.
Witness this (after yet another fake disk crash):
%%%
vinum -> ls -v local.p0.s0
Subdisk local.p0.s0:
Size: 31457129472 bytes (29999 MB)
State: reviving
Plex local.p0 at offset 0 (0 B)
Reviver PID: 46863
Revive pointer: 22 GB (77%)
Revive blocksize: 64 kB
Revive interval: 0 seconds
Drive ren (/dev/ad6s1e) at offset 135680 (132 kB)
=20
vinum -> vinum[46863]: local.p0.s0 is up
=20
vinum -> checkparity local.p0.s0
local.p0.s0 is not a plex
vinum -> checkparity local.p0
Parity incorrect at offset 0x2020
vinum -> rebuildparity -V local.p0
Parity incorrect at offset 0x2020
Rebuilding at 2703 kB (0%) Parity incorrect at offset 0x2a6664
Rebuilding at 139 MB (0%)
%%%
which indicates that the parity surely is not correctly recalculated during
the revive.
Greg, can you tell me if this is correct behaviour?
--Stijn
--=20
Q: Why is Batman better than Bill Gates?
A: Batman was able to beat the Penguin.
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