[Nottingham] via kt4 Ultra Raid Board...any good with linux?
nottingham at mailman.lug.org.uk
Mon Dec 2 00:45:01 2002
On Sun, Dec 01, 2002 at 06:15:31PM +0000, Matthew Sackman wrote:
> On Sat, Nov 30, 2002 at 12:13:00AM +0000, Simon Huggins wrote:
> > So which bits "are not *solely* related to use with ENBD either"?
> > (Yes, I know it appears I'm being a stubborn bastard on this point -
> > that's because I *am* a stubborn bastard but I'm also interested in
> > arguments based on technical merit not rhetoric so show me the facts and
> > I'll be happy)
> > I'll admit the documentation (well manpages) leave something to be
> > desired but the RAID HOWTO is fairly good (or at least was when I first
> > setup RAID).
> OK, try this then:
> Get two SCA SCSI harddiscs and set up a software RAID 1 array across
> partitions on the 2 disks.
> Set the array running and format it, mount it, start running data into
> it. Remove one of the disks.
> Insert it back in. Run raidhotadd and try to get it to accept the new
I've not had the luxury of doing this with hotswap drives but it worked
fine for me without.
What did raidhotadd say?
> Repeat this 25 times and not how many times raidhotadd gives you some
> stupid error message and refuses to play ball.
I've not played with SCA as I said above but did you do the relevant
proc magic as described in the HOWTO?
> *NONE* of the problems I noted are specific to ENBD. ENBD simply
> appears as a normal block device, no different to a local hard disc or
> cdrom or whatever. There is no special code in the mdtools to deal
> with ENBD - ENBD is completely transparent.
Right, but as I've rebuilt failed disk RAID1 arrays myself I find it
hard to believe that it could have caused you so much pain.
... "1 girl was just abducted."--FM "Kidnapped."--DS "Potato, potato.."-FM