On Wed, 2007-05-09 at 17:16 +0200, Robert Millan wrote: > On Wed, May 09, 2007 at 03:02:48PM +0100, Sam Morris wrote: > > > > Yes, "grub-probe: error: Cannot detect partition map for md0". The > > message doesn't appear when grub-pc's postinst is run, however. > > > > > Also, what is the result of "parted /dev/md0 print" ? > > > > Disk /dev/md0: 300GB > > Sector size (logical/physical): 512B/512B > > Partition Table: loop > ^^^^ > This means there's indeed no partition table, just a filesystem. > > Did you install Debian on purpose without creating any partition table, or is > this just the normal result when using software RAID? What does parted say > about your real disk(s)?
Interesting. This system has been installed for quite a few years; I
moved it to raid1 by hand.
The system has several disks; md0 consists of hdb2 and hdg2. Here's what
parted says about hdb:
Disk /dev/hdb: 300GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Number Start End Size Type File system Flags
1 32.3kB 543MB 543MB primary
2 543MB 300GB 300GB primary ext3 raid
When you say there is no partition table, I guess you mean inside md0
itself? AFAIR, the array was created before partitionable md arrays were
added to Linux... or at least before mdadm had the option to create
them.
I just ran this on a system that uses RAID which I created with the etch
installer:
Disk /dev/md8: 57.5MB
Sector size (logical/physical): 512B/512B
Partition Table: loop
Number Start End Size File system Flags
1 0.00kB 57.5MB 57.5MB ext3
Which appears to confirm my belief that partitionable arrays are unusual
rather than the default.
--
Sam Morris
http://robots.org.uk/
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