Messages in this thread | | | Date | Tue, 26 Aug 2003 19:30:14 +0200 | From | Lars Marowsky-Bree <> | Subject | Re: md: bug in file raid5.c, line 540 was: Re: Linux 2.4.22-rc1 |
| |
On 2003-08-26T10:22:57, Mike Fedyk <mfedyk@matchmail.com> said:
> Is there any way to get it working on one partition, or does it require at > least two backing store block (an actual physical disk) devices that a bunch > of loop devices point to? (I'm thinking of the raid[15] case).
md will work just fine - although with much reduced performance - if setup on top of partitions on the same disk. If all you have is a single physical disk, you can create the loop devices accordingly. For multipath testing, I have used LVM logical volumes + loop devices to simulate such, or used UML and fed it with a bunch of block devices (LVs or loop devices) from the host.
(The mp-test.sh script actually knows how to create arbitary numbers of loop devices for multipath testing, which in turn uncovered a bug in our loop handling, which axboe took care of...)
Sincerely, Lars Marowsky-Brée <lmb@suse.de>
-- High Availability & Clustering ever tried. ever failed. no matter. SuSE Labs try again. fail again. fail better. Research & Development, SuSE Linux AG -- Samuel Beckett
[unhandled content-type:application/pgp-signature] | |