[626] in testers
pre-7.0A: kernel problems?
daemon@ATHENA.MIT.EDU (daemon@ATHENA.MIT.EDU)
Sat May 5 03:58:11 1990
Date: Sat, 5 May 90 03:57:53 -0400
To: testers@MIT.EDU
From: Richard Basch <probe@MIT.EDU>
May 5 03:13:13 cronos vmunix: uba?: stray intr ipl 14 vec 774
May 5 03:42:59 cronos vmunix: afs: Lost contact with file server 18.72.0.4 in cell athena.mit.edu
May 5 03:43:30 cronos vmunix: afs: failed to store file in volume 536871013 (network problems)
May 5 03:43:48 cronos vmunix: afs: file server 18.72.0.4 in cell athena.mit.edu is back up
I am beginning to doubt the integrity of the new kernel... this needs
more testing!
Unfortunately, I have no idea what the stray interrupt is from... I had
suspected the network interface, but the following suggests it might be
something else:
May 4 20:24:20 cronos vmunix: scsi0 at uba0 csr 0x200c0080 vec 0x1f8, ipl 0x14
May 4 20:24:20 cronos vmunix: rz3 at scsi0 slave 3 (RZ23)
May 4 20:24:20 cronos vmunix: ss0 at uba0 csr 0x200a0000 vec 0xc0, ipl 0x14
May 4 20:24:20 cronos vmunix: sm0 at uba0 csr 0x200f0000 vec 0x44, ipl 0x14
May 4 20:24:20 cronos vmunix: se0 at uba0 csr 0x200e0000 vec 0x50, ipl 0x14
May 4 20:24:20 cronos vmunix: se0: hardware address 08:00:2b:11:23:1b
The incidents in the first part may just be a lot of coincidences, and
the AFS problem may be one that simply went undetected in pre-3.0alpha,
etc. I do not know if concern needs to be raised, yet, but this is an
advance warning of what to possibly look out for. I don't even know how
to reproduce this...
Oh... I just thought of what the AFS network problem may be related
to... the network problem is probably due to a second process coming in
and trying to save information when the first one (probably zmailnotify)
discovered that the servers went down. "zmailnotify" tries opening
files with an exclusive lock, and when 3.0beta clients try setting
exclusive locks on files stored on pre-3.0alpha servers (which the
Athena cell is still running), the file server is considered to be down,
because the proper codes are not returned to the client.
-Richard
