Joel,
On Fri, 6 Oct 2000, Joel Becker wrote:
> On Fri, Oct 06, 2000 at 07:01:15PM +0100, Corin Hartland-Swann wrote:
> > Yes - but I was curious as to whether this kernel memory bug had been
> > fixed yet, or whether it was still happening. I'd like to upgrade from
> > 2.2.14 (because of the security hole) but the do_try_to_free_pages() bug
> > is IMHO a much greater problem than the hole.
>
> Well, we'll see how it goes. I guess I'm gonna have to live
> with the memory issue, because I have needs for the .18 features.
If you can put a serial connection between this box and another, you can
sometimes recover from the bug if you have console access...
Do tell me how it goes once it's in production...
> > Do you have physical access to the machine? Maybe you could re-seat the
> > cabling and/or swap out the controller.
>
> The drive failed again. Just on some reads (an ftp connection).
> It's really shaping up to be the drive. I opened the box and checked
> the cables. They looked fine. So I yanked the drive and I'm running on
> half a mirror now. I intend to pound the drive in another box.
Sounds like a plan.
> > What do the boot= and root= lines in your lilo.conf look like? They should
> > point to the root MD device, and not to one of the individual disks, eg:
>
> I'm not booting off of the md device. When it gets to the MD
> device, it won't start it (autostarting). /etc/raidtab had both disks
> in the config.
> In addition, when I booted after I removed the allegedly faulty
> disk, the md device would not start up because it couldn't find the
> second device. I'd think that it would start up in the degraded state,
> not fail to start at all. I guess I'm mistaken.
This should all be fixed if you booted off the MD device (even with only
one disk plugged in, as you have now).
> > Under RAID-1 the raw partition contains a valid ext2 partition, /which is
> > slightly smaller than the raw parition/. The remainder (at the end) stores
> > the RAID superblock.
>
> Ok, so I *should* be able to mount/fsck it. I'm glad to be sure
> of that.
It relieved the hell out of me when I went for RAID-1. A definate bonus
over RAID-5.
Regards,
Corin
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