Hi,
Unfortunately because of buggy upstream support for my hardware (Dell XPS
13 9343) I often have to force reboot using Magic Sysrq Keys (REISUB). In
fact I have quite a few hangs, also the majority of times I am not able to
shutdown without relying on REISUB. There are obviously times when even
REISUB do not work (kernel is completely unresponsive), but the vast
majority of times it works. What I do not understand is why Magic Sysrq
Keys leave me with a damaged filesystem: shouldn't an emergency SYNC + read
only remount be enough to secure my data? After rebooting with REISUB my
system often complains about "read only" files and if I "stat" them I get
"weird file". I often loose some of my desktop settings like the plasmoids
I had on the desktop or my favourite applicatios I had in the menu, but
what's even stranger is that I often magically recover them later, while
doing exactly NOTHING to recover them. This behaviour scares me so much
that I'm thinking about switching to another fs if I will not find a
solution very soon.
The disk seems fine: https://bpaste.net/show/822d4b4ff902
dmesg: http://paste.pound-python.org/show/wVyHXXOw4emWmWFfVJHQ/
$ sudo btrfs scrub status /
[sudo] password di niko:
scrub status for 28443ff1-5325-45f6-b879-dad895fcdcfb
scrub started at Fri Apr 15 09:38:09 2016 and finished after
00:08:41
total bytes scrubbed: 133.94GiB with 10 errors
error details: csum=10
corrected errors: 0, uncorrectable errors: 10, unverified errors: 0
(yesterday there were 4 uncorrectable errors, but after today's reboot with
Magic Sysrq Keys it is now 10)
Distro is Arch Linux, kernel is 4.6.0-rc3.
$ btrfs --version
btrfs-progs v4.4.1
Greetings,
Niccolò
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