On Thu, Aug 06, 2015 at 12:00:30PM +1000, wraeth wrote: > On 06/08/15 10:34, Bryan Gardiner wrote: > > After I make a fresh backup of my files, how would you recommend > > troubleshooting this? Run memtest or a hard drive tester? Since > > the files seemingly corrupted themselves after install without > > being touched, I'm highly suspicious of the hard drive, but would > > like to rule other things out (if say for example that > > CONFIG_X86_INTEL_PSTATE CPU clock booster is dangerous, or > > nvidia-drivers, or ...). Haven't checked for corruption on /home > > yet. > > One key question that doesn't seem to have been asked yet: have you > performed an fsck on the partition? You could try booting to a livecd > environment and running > > fsck -fc /dev/sdXY > > (adjusting for your device schema accordingly) on your apparently > failing partition(s) to see if there is a filesystem corruption...
Thanks very much for the suggestions, everyone. I ended up using fsck
-fc and -fcc, which resulted in no bad blocks being detected. I also
wanted to make sure no other files in that range of disk were
corrupted, so I extracted the extents used by the bad files:
cat bad-files | while read file; do
echo ">>> ${file} <<<"
debugfs -R "dump_extents ${file}" /dev/mikasa-vg/gentoo
done >bad-extents
found the files in the regions between the bad files:
for block in $(seq 5302485 5302486) $(seq 5302489 5302498) $(seq 5302504
5302508); do
inode="$(debugfs -R "icheck ${block}" /dev/mikasa-vg/gentoo 2>/dev/null |
perl -ne 'if (/^\d+\s+(\d+)$/) {print $1, "\n"}')"
if [[ -n $inode ]]; then
echo "${block} ${inode} $(debugfs -R "ncheck ${inode}"
/dev/mikasa-vg/gentoo 2>/dev/null | awk 'NR==2 {print $2}')"
else
echo "${block}"
fi
done
and file'd those to make sure that they were okay. This is only a
personal computer, so I'm going to call this a one-off issue and move
on, and leave the stronger approaches for another day.
Thanks again!
Bryan
--
If people do not believe that mathematics is simple, it is only
because they do not realize how complicated life is - von Neumann
signature.asc
Description: Digital signature
