Messages in this thread |  | | Date | Fri, 1 Dec 2000 10:52:33 +0100 | From | Florian Heinz <> | Subject | Re: Some problems with the raid-stuff in 2.4.0-test12pre3 |
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On Fri, Dec 01, 2000 at 01:11:45PM +1100, Neil Brown wrote: > On Thursday November 30, sky@dereference.de wrote: > > Hello people, > > > > I have some trouble with the raid-stuff. > > My machine is a Pentium-III, 256 MB ram and 7 scsi-disks (IBM DNES-318350W > > 17B). I'm using raid5 for 6 of these disks (chunk-size 8). > > Machine boots, I do mkraid /dev/md0 and then mke2fs /dev/md0 and that's > > where the problems start. mkfs tries to write 684 inode-tables and after the > > first 30 it gets very slow. ps ax (with wchan) tells me it hangs in > > wakeup_bdflush. > > I'm rather sure it's related to the raidcode, because without raid the disks > > work as expected. > > I'm using an Adaptec 7892A with the aic7xxx-driver, I have disabled the TCQ > > and the extra checks for the new queueing code, but I have tried with both > > activated, too. > > No related messages from the kernel in the syslog. > > It worked fine with 2.2.x. > > Is it just "very slow", but it eventually finishes, it is it so slow, > that it actually stops and doesn't make any progress at all? > > raid5 in 2.4 is definately slower than in 2.2. Could that be all that > you are seeing?
It's so slow that it's unusable. Especially writing. open() and close()-calls often hang for 20 seconds or more. write-calls hang for 3-4 seconds. This has to be a bug. But yes, after a long time, it finishes ;) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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