Check the status of mounted partitions in /etc/mtab to verify that they are mounted RW (and that they are actually mounted as ext3, not ext2). Try (as root) umount'ing them, then fsck'ing them, in case they failed an automated fsck during init (this seems farfetched since you use ext3 filesystems, but it's all I can think of).
Since this happened after a reboot (at least I think that's what you wrote), you might want to verify that you are running the same kernel as you were before the reboot.
I'd classify the chance that this is a virus as quite small. The hard-reset question does make me think of fsck problems with the filesystems.
If that doesn't turn up anything, post again, this time quoting the actual error messages instead of paraphrasing them.
At 05:06 PM 1/17/03 +0100, Korosi Akos wrote:
Hi all! I have a strange problem.Happened that the machine had been rebooted (hardly) for some times, and at the end the next happened: Nobody can log in except the root. The message is that there is no /home/<user> (<user> is the appropriate user)! But in /home there is the <user> directory, and the <user> has rwx permissions on it. And everybody has x permission on /home. The other thing is that in sendmail sm-client can not be started, because: can not chdir to /var/spool/<somedir>, no permissions. BUT there are appropritate permissions on that dir, and everybody has x permission on /var and /var/spool. After that I changed /var/spool/<somedir> to 777 permissions, but sm-client says the same. I can log in as root. And if I try to #su - <user>, it wont start. I tried #strace su - <user> and saw, that su can open some files, but it can not open to read many files (in /etc), but the files are there, everybody has read permissions on them, and everybody has execute permissions on the parent directoryes. What could this be? Could this be some virus (I forget to setup iptables correctly), or could this happen because of hard resets? I thought that I will reinstall Linux (RH 8.0), because happily I use more partitions, and there isnt any important data on root partition. But I'm very curious about this problem. I use RedHat 8.0 and Ext3 file system on all data partitions. This is an older machine (K6-2 350 CPU). If you need any further info, just ask.
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