[5373] in Athena Bugs
Cache confusion?
daemon@ATHENA.MIT.EDU (David Krikorian)
Mon Jul 2 11:39:56 1990
Date: Mon, 2 Jul 90 11:39:45 -0400
From: David Krikorian <dkk@ATHENA.MIT.EDU>
To: bugs@ATHENA.MIT.EDU
Reply-To: dkk@mit.edu
System in question:
hecate# machtype -v -d -c -r -M
VAX650
ra0: RA90
ra1: RA90
ra2: RA90
ra3: RA90
0x8bec00 user, 0xff3000 (16 M) total
hecate# tail -1 /etc/version
Athena Server (VAX650) Version 7.0E Sun May 27 22:26:16 EDT 1990
hecate# ls -l /vmunix
-rwxr-xr-x 1 root 756736 Jun 7 02:26 /vmunix
The following looks suspicious to me. Is there any known cause?:
------------
hecate# sync
hecate# df /u2
Filesystem kbytes used avail capacity Mounted on
/dev/ra2g 1136861 1585 1021589 0% /u2
hecate# umount /u2
hecate# mount /u2
hecate# df /u2
Filesystem kbytes used avail capacity Mounted on
/dev/ra2g 1136861 9 1023165 0% /u2
------------
Notice that the number of blocks "used" went from 1585 to 9. I had
recently (over the past few hours) rm'd about 150 Meg from that
partition. That looks like 1% of the blocks were never recognized as
free until the umount.
