Le 10/01/2017 05:44, Chris Murphy a écrit : > On Mon, Jan 9, 2017 at 11:54 AM, François Patte > <francois.patte@xxxxxxxxxxxxxxxxxxxx> wrote: > >> janv. 09 19:26:12 bhaskara systemd[1]: Stopped /dev/dm-5. >> janv. 09 19:26:12 bhaskara systemd[1]: Stopped >> /sys/devices/virtual/block/dm-5. >> janv. 09 19:26:12 bhaskara blkdeactivate[10933]: [DM]: deactivating >> crypt device luks-63be2188-bd3d-4552-9a8b-9481d942fb46 (dm-5)... done >> janv. 09 19:26:12 bhaskara kernel: md122: detected capacity change from >> 42951770112 to 0 >> janv. 09 19:26:12 bhaskara kernel: md: md122 stopped. >> janv. 09 19:26:12 bhaskara kernel: md: unbind<sdb2> >> janv. 09 19:26:12 bhaskara kernel: md: export_rdev(sdb2) >> janv. 09 19:26:12 bhaskara kernel: md: unbind<sda2> >> janv. 09 19:26:12 bhaskara kernel: md: export_rdev(sda2) >> janv. 09 19:26:12 bhaskara kernel: BUG: unable to handle kernel paging >> request at ffff8f3f29ea8000 > > OK well it's a kernel bug, seems like to me. The simplest thing to do > is try a different kernel. But which one? I'm not seeing immediately > relevant patches for md in either 4.8.16 or 4.8.17. What kernel > version are you using now? If it's 4.18.15, sure you can try either > 4.18.16 (which is in updates-testing) or you can get 4.8.17 from koji. > Looks like 4.9.2 is building now in koji and should be done shortly so > you could also try that one. I use 4.8.15 and 4.8.16 is not yet in the update reposirory. > > If it reproduces with 4.9.2, for sure you should try to get more > information. If you can ssh into the system remotely so you can get a > complete dmesg that'd be useful. If ssh gets killed off before the > bug, then you might see if any of these ideas will get you more > information on the nature of the failure. > > https://freedesktop.org/wiki/Software/systemd/Debugging/#index2h1 This bug appears randomly: today, I could shutdown my machine normaly (almost normaly: sysstemd try to write on journactl while /var is unmounted.... for instance). I don't undersstand why these things are going backward: I have a fedora 21 install which boot and shutdown without problems and systemd is running on this machine. -- François Patte UFR de mathématiques et informatique Laboratoire CNRS MAP5, UMR 8145 Université Paris Descartes 45, rue des Saints Pères F-75270 Paris Cedex 06 Tél. +33 (0)1 8394 5849 http://www.math-info.univ-paris5.fr/~patte
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