Organization: University of Toronto Chemistry Department
References: <1992Nov19.194834.10205@eng.ufl.edu>
Date: Thu, 19 Nov 1992 22:05:44 GMT
Lines: 34
In article <1992Nov19.194834.10205@eng.ufl.edu> rcf@tunica.eel.ufl.edu (Robert Fellenz) writes:
>Our HP 9000/425 server with HP_UX 8.0 crashed twice in a row today. The first time it crashed the message "panic: free: freeing free block" was displayed. Then, while /etc/rc was executing during bootup, the system crashed once again with the message "panic: ialloc: dup alloc." The system worked after rebooting on the second attempt.
>
>Could someone tell me what these messages are and how they can be prevented?
Welcome to the club :-(. We have been getting these messages on our
750 running 8.07 for 5 months, and they seem to be caused by:
1) having a very active file system in terms for file/directory
creation/deletion, not lots of I/O (our system always panics on the /news
partition, generally during the "expire" when lots of files are being
deleted in a short time), or,
2) running your disks lower than 10% free space (this is not a factor
in our panics, but this was given to me by another site that has been
seeing this problem for quite a while).
I recently got a new version of fsck, and we haven't had a panic since
(though I've had to reboot several times due to the load average
climging forever problem, which we have seen for 7 months); it seems
that the standard fsck does not properly clean the disk in one pass
(I generally had to run 3 passes on /news to get a pass with no
complaints). I ran the new fsck once on /news, and we haven't had
an "inode"-related panic since (2 weeks ago, which is way longer than
our average uptime). I have no idea how you get the new fsck, or
what versions of HP-UX it is available for.
The Response Center denied all knowledge of inode problems when I called
it in in July, but this problem seems well-known to sites with active
file systems. The solution for this one is: don't let the d**n users
on the system - they keep breaking things :-).
--
What are the chances that any HP computer system will ever "work" properly?
... and Slim just left town. -*- Mike Peterson, SysAdmin, U/Toronto Chemistry