On Tue, Apr 10, 2018 at 10:19 AM, Aleksei Gutikov <aleksey.gutikov@xxxxxxxxxx> wrote: > Hi all, > > Previously with ceph-disk when hdd flaps there was udev rule starting > "ceph-disk trigger" that was checking xfs partition with osd metadata and > staring osd if metadata exists. Do you mean here that the physical device changed its name? e.g. /dev/sda is now /dev/sdc? ceph-volume can detect such situations upon reboot and the activation will work normally (we've tested this) > > Now with ceph-volume device mapper device (/dev/dm-8 for example) hold the > whole tree of kernel objects including lvm lv, vg and pv and also block > device itself so same disk appears with different letter and without lvm > data (lsblk does not see lv on disk with different letter). > > And I have to perform a list of manual actions to start osd: > > - remove device mapper device: > sudo dmsetup remove /dev/dm-8 > > - disable new block device and rescan scsi to make lvm volume appear: > echo 1 | sudo tee /sys/block/sdb/device/delete > echo "- - -" | sudo tee /sys/class/scsi_host/host0/scan > > - maybe umount osd direcroty (I'm not sure if it is required): > sudo umount /var/lib/ceph/osd/ceph-12 > > - list osd disks to get lv name (osd fsid): > sudo ceph-volume lvm list > > - And finally start osd: > sudo ceph-volume lvm trigger 12-92b66a98-1c35-40a8-bf5b-ac123c366166 > > > Is that expected behavior or a bug or I'm missing something? I am not sure I follow how you got into this problem. Was this after a reboot? or was the system online and the drive changed on the fly? > > > Thanks > > -- > > Best regards, > Aleksei Gutikov > Software Engineer | synesis.ru | Minsk. BY > -- > 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 -- 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
