Hello again, All. Update: I ran fsck in archiso this morning, and found sth interesting. To sum up, fsck.f2fs exit with signal 11, arguing segmentation fault. Just the same as the error I faced last night. (I wrote the previous mail last night and sent it this morning.) Now that I knew it's DEFINITELY a file system error. And I wonder if there's any solution except formatting the whole partition. Again, I shooted the error log and I'll post it here: http://imgsrc.baidu.com/forum/pic/item/2318034c510fd9f90c88e96d2f2dd42a 2934a47c.jpg Lots of thx!!! RW On Sun, 2017-05-14 at 07:19 +0800, Robert W0ng via arch-general wrote: > Hi, All. > > 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[1] 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... > > [1] 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. > > Image Address: http://imgsrc.baidu.com/forum/pic/item/7bf9f2c4b74543a > 9b > 9da16cf14178a82bb0114d4.jpg > > > RW >