Description of problem:
When upgrading from FC5 to F7, Anaconda segfaults during package installation.
The first time, it segfaulting during installation of the 11th package, libtiff.
At the next try, it segfaulted on the 13th package. When this happens, the
anaconda process consumes 99% of the CPU. A strace indicates repeating segfaults
Version-Release number of selected component (if applicable):
I'm using the official DVD of F7. Media verification passes without problems, as
do memtest86. Installing in text mode. The machine is a 433 MHz Celeron.
More details, per http://fedoraproject.org/wiki/AnacondaBugReporting:
* The anaconda version is 184.108.40.206.
* Not using kickstart.
* Standard LVM partitioning scheme:
Filesystem 1K-blocks Used Available Use% Mounted on
283452792 137443604 131378276 52% /
/dev/hda1 101086 14718 81149 16% /boot
tmpfs 63032 0 63032 0% /dev/shm
* Not using USB or Firewire devices.
I've determined that this is a out of memory problem. If I look in
/mnt/sysimage/root/upgrade.log, I'll found lot of messages like:
error: Couldn't fork %post: Unable to allocate memory
With 128 MB, I got to package 6 of 806. With 192 MB, I got to 472 of 800. This
is a pain. I see several bugs here:
* An upgrade shouldn't really require 256 MB or more RAM.
* The documentation claims that 192 MB is even enough for graphical mode.
* Anaconda shouldn't hang in a segfault loop just because memory is low.
* Critical errors like these should be visible in the installation GUI; you
shouldn't need to go looking for it in files like /mnt/sysimage/root/upgrade.log.
Yet another try with 384 MiB completed the installation successfully.
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Have you encountered the same problem when upgrading to Fedora 9?
No. I have now performed an upgrade from F7 to F9. The machine still has 384 MB
RAM, but I booted the installation with mem=256M. The upgrade was successful,
even though it took a long time. top/free indicated that anaconda maxed out at
252MiB and the swap usage was 189MiB. 963 packages were upgraded.
Since the upgrade actually worked, I guess this bug can be closed, but it would
still be nice with a lower memory consumption.