Hi, It should be enough to add After=local-fs.target to /lib/systemd/system/ceph-disk@.service and have ceph-disk trigger --sync chown ceph:ceph /dev/XXX to fix this issue (and others). Since local-fs.target indirectly depends on dm, this ensures ceph disk activation will only happen after dm is finished. It is entirely possible that the ownership is incorrect when ceph-disk trigger --sync starts running, but it will no longer race with dm and it can safely chown ceph:ceph and proceed with activation. I'm testing this with https://github.com/ceph/ceph/pull/12136 but I'm not sure yet if I'm missing something or if that's the right thing to do. What do you think ? On 04/11/2016 15:51, Wyllys Ingersoll wrote: > We are running 10.2.3 with encrypted OSDs and journals using the old > (i.e. non-Luks) keys and are seeing issues with the ceph-osd processes > after a reboot of a storage server. Our data and journals are on > separate partitions on the same disk. > > After a reboot, sometimes the OSDs fail to start because of > permissions problems. The /dev/dm-* devices come back with > permissions set to "root:disk" sometimes instead of "ceph:ceph". > Weirder still is that sometimes the ceph-osd will start and work in > spite of the incorrect perrmissions (root:disk) and other times they > will fail and the logs show permissions errors when trying to access > the journals. Sometimes half of the /dev/dm- devices are "root:disk" > and others are "ceph:ceph". There's no clear pattern, so that's what > leads me to think its a race condition in the ceph_disk "dmcrypt_map" > function. > > Is there a known issue with ceph-disk and/or ceph-osd related to > timing of the encrypted devices being setup and the permissions > getting changed to the ceph processes can access them? > > Wyllys Ingersoll > Keeper Technology, LLC > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- Loïc Dachary, Artisan Logiciel Libre -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
