Segmentation fault and (likely) file system bug while removing gnome-extra
For several reasons I decided to remove the group 'gnome-extra'
from my system. During the uninstallation, something went wrong.
For a 'funny' reason, which I may explain later, I wasn't able
to post the error log in the form of text here, so I will upload
a photo as an attachment with this mail...
So, I switched to a getty and started the uninstallation. No
errors occourred until it reached the 15th package. The package
name was 'telepathy-idle'. All of a sudden the system printed
a large section of dmesg, saying something like it had run into
a kernel bug(?). The pacman was then killed, leaving the zsh
reporting a segmentation fault...
I felt the possibility that I wasn't able to handle this problem
on my own, so I took a photograph using my mobile without even
thinking, which proved to be useful later. Then I ran
# dmesg >> /root/dmesg.output
hoping to save the error log. I tried to restart the
uninstallation, but the pacman freezed. Even pressing CTRL-C
didn't work. I switched to another getty attemptting to terminal
in, but after I entered 'root' and pressed ENTER, no any output.
The course was just left there, blinking. Having no choice, I
reboot the system using the magic sysrq keys...
Rebooted, I checked the package changes. Confusingly, no packages
was removed, even the previous should-be-removed 15 ones! Bad
feeling about this, I checked the /root directory, and here came
the most confusing part: The dmesg.output file was GONE! It
seemed that all the data that should have been written to the
disk were discarded...
(And that's the reason why I have to post the error log in the
form of shooted image... Somehow, I found myself a potential
prophet... :P JUST KID...)
Judged by this, together with the previous error log, I would
say it's a file system bug... But, confused, how can an
uninstallation of packages end up like this way? :(
I would appreciate any help from you guys. Truly would. Thank
you in advance! :)
PS: I'm not going to post my pacman.conf here because all
modification I had ever done to this file was to enable the
color output. I suppose it can be excluded from the possible
causes... And if necessary, I would recur the
uninstallation with '--debug' flag enabled and report
it to the upstream developer...
 Upadte: Unable to upload the image file because it's too
big to be attached in this mailing list... So I
uploaded it to a local website and I will post the
image address here.