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File Systems problem

ppol
ppol asked
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Last Modified: 2010-05-18
During the last weeks, in which the cpu (i585 120mhz) of
my machine has been heavily loaded (steadily 100% cpu busy),
i noticed two weird facts
- after 8-9 days, the system claimed the / and /var file
  system to be readonly. They were, in effect; root couldn't
  create or modify any file in those directory.  log files
  in /var/log had not been updated since one day before.
  Strangely 'ls' command showed the correct access privileges
  for /var and /:
  %% ls -lF  /var -d
   > 1 drwxr-xr-x  15 root     root         1024 Jun  9 19:32 /var/

  'df' accessed correctly to all file systems, too.
  Yet all programs that require accessing to data in those areas
  were in troubles (mail programs, man, etc.; not even /etc
  could be accessed, of course).
  I got out of troubles using remount with options:
  %% mount -n -o rw,remount  /
  %% mount -n -o rw,remount  /var

  I guess this problem is connected to the extreme loading of the
  machine, but i am not sure. Can anybody explain me what has
  happened?
  What is the best way to monitor the system, so as to be able to
  restore the normal situation as soon as possible?

- two local directories ~/var and ~/etc disappeared one night (that
  is, they were not detected by 'ls' any more) and came back the
  day after.
  How can it be? What can I do in such cases?

Thank you for you comments
Paolo Pumilia

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Commented:
Make sure that the file system is stable, have you run the fsck command (or equivalent)?

Any hardware problems? Disk driver cache conflicts? Has this problem only arisen recently?
Sounds like your are running Linux kernel 1.2xx.  If so, get it!

If not, how about some OS details?

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Commented:
Linux kernel 2.0.27 is running on my machine
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