Messages in this thread | | | Date | Wed, 13 Feb 2002 18:30:01 +0000 (GMT) | From | Mark Cooke <> | Subject | Re: Quick question on Software RAID support. |
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Hi Alan,
Just a note that I have almost exactly the setup you outlined on a KT7A-RAID, HPT370 onboard.
I have a single disk on each highpoint chain, and a 3rd (parity) on one of the onboard 686B channels.
I have been seeing odd corruptions since I setup the system as RAID-5 though. Have you seen any reports of 686B ide corruption recently (or RAID-5 for that matter) ?
kernel 2.4.18pre6... just compiling pre9-ac3... Athlon MP 1500+, mem=nopentium apm=off, NvAGP=0 in X-setup.
Mark
On Wed, 13 Feb 2002, Alan Cox wrote:
> Date: Wed, 13 Feb 2002 11:15:54 +0000 (GMT) > From: Alan Cox <alan@lxorguk.ukuu.org.uk> > To: Marco Colombo <marco@esi.it> > Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, linux-kernel@vger.kernel.org > Subject: Re: Quick question on Software RAID support. > > > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > Is it supposed to detect a failed disk and *stop* using it? > > Yes, it will stop using it and if appropriate try and do a rebuild > > > I had a raid1 IDE system, and it was continuosly raising hard errors on > > hdc (the disk was dead, non just some bad blocks): the net result was that > > it was unusable - too slow, too busy on IDE errors (a lot of them - even > > syslog wasn't happy). > > Don't try and do "hot pluggable" IDE raid it really doesn't work out. With > scsi the impact of a sulking drive is minimal unless you get unlucky > (I have here a failed SCSI SCA drive that hangs the entire bus merely by > being present - I use it to terrify HA people 8)) > > > BTW, given a 2 disks IDE raid1 setup (hda / hdc), does it pay to put a > > third disk in (say hdb) and configure it as "spare disk"? I've got > > concerns about the slave not actually beeing able to operate if the > > master (hda) fails badly. > > Well placed concerns. I don't know what Andre thinks but IMHO spend the > extra $20 to put an extra highpoint controller in the machine for the third > IDE bus. > > Alan > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ >
-- +-------------------------------------------------------------------------+ Mark Cooke The views expressed above are mine and are not Systems Programmer necessarily representative of university policy University Of Birmingham URL: http://www.sr.bham.ac.uk/~mpc/ +-------------------------------------------------------------------------+
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