Date: Fri, 28 Jul 2000 02:28:53 +0000 From: "W.H.Scholten" <"whs"@xs4all.nl> To: hackers@freebsd.org Subject: Re: uncool MO disk problems Message-ID: <200007280256.EAA27450@smtp9.xs4all.nl> References: <md5:FD27BE258BAF7ED344F809F2693499BF>
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L.S.
Update on previous mail a while back. I tried the latest sym driver from
the CVS tree (into fbsd 3.3) but little has changed (haven't checked
what happens with 640MB 2048 b/s disks yet):
> 4. Formatting ufs on fbsd:
> newfs hangs (unkillable).
This now works.
> 3. ufs disk formatted on obsd:
> I cannot use da0a but mounting da0 (with -t ufs) works.
> After I change the disklabel's '16 partitions:' to '8 partitions:' I can
> mount da0a (and read/write) but unmounting fails (umount -> unkillable
> process).
No change (also goes for a disk formatted under fbsd).
Here's what happens after I mount the disk, and have written something
to it, then try to unmount:
-----------------------------------------------------------------------
ps axl for the umount process shows: cdwait D+
When I now halt the machine:
after a short while:
syncing disks... done
then after about 3 minutes I get into DDB:
page fault while in kernel mode
<snip>
kernel: type 12 trap, code=0
stopped at ffs_sync+0x1f movl 0xc(%esi),%esi
a vm/vfs problem?
Second situation: mounting a write protected disk (RW, but the OS should
change that itself to a read only mount if the disk is write protected,
which it does recognize at mount time).
------------------------------------------------------------------------
unmounting failed, at reboot the machine tried it some more, gave up
said:
giving up: rebooting
which it did; unfortunately, it didn't unmount the file systems which
could be unmounted so started checking the ffs partitions next time I
booted fbsd.
As apart from Gerard's response there were no reactions of anyone with
similar problems nor of people using MO drives without problems, can I
assume everyone using MO drives nuked fbsd and uses something else now?
Or does anyone use MO drives with 4.0 or 4.1 without the problems I
mentioned (in this and my previous mail) ?
Btw, I compiled the kernel with DDB now so if there's any use for it I
can give the trace information etc.
Wouter
PS. CC responses to my mail address please.
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