On Tue, Jun 12, 2018 at 6:47 AM, Vadim Bulst <vadim.bulst@xxxxxxxxxxxxxx> wrote: > Hi Alfredo, > > thanks for your help. Yust to make this clear /dev/dm-0 is the name of my > multipath disk: > > root@polstor01:/home/urzadmin# ls -la /dev/disk/by-id/ | grep dm-0 > lrwxrwxrwx 1 root root 10 Jun 12 07:50 dm-name-35000c500866f8947 -> > ../../dm-0 > lrwxrwxrwx 1 root root 10 Jun 12 07:50 dm-uuid-mpath-35000c500866f8947 -> > ../../dm-0 > lrwxrwxrwx 1 root root 10 Jun 12 07:50 scsi-35000c500866f8947 -> > ../../dm-0 > lrwxrwxrwx 1 root root 10 Jun 12 07:50 wwn-0x5000c500866f8947 -> > ../../dm-0 > > If I run pvdisplay this device is not listed. Either way, you should not use dm devices directly. If this is a multipath disk, then you must use that other name instead of /dev/dm-* I am not sure what kind of setup you have, but that mapper must release its lock so that you can zap. We ensure that works with LVM, I am not sure how to do that in your environment. For example, with dmcrypt you get into similar issues, that is why we check crypsetup, so that we can make dmcrypt release that device before zapping. > > Cheers, > > Vadim > > > > On 12.06.2018 12:40, Alfredo Deza wrote: >> >> On Tue, Jun 12, 2018 at 4:37 AM, Vadim Bulst <vadim.bulst@xxxxxxxxxxxxxx> >> wrote: >>> >>> no change: >>> >>> >>> root@polstor01:/home/urzadmin# ceph-volume lvm zap --destroy /dev/dm-0 >>> --> Zapping: /dev/dm-0 >> >> This is the problem right here. Your script is using the dm device >> that belongs to an LV. >> >> What you want to do here is destroy/zap the LV. Not the dm device that >> belongs to the LV. >> >> To make this clear in the future, I've created: >> http://tracker.ceph.com/issues/24504 >> >> >> >>> Running command: /sbin/cryptsetup status /dev/mapper/ >>> stdout: /dev/mapper/ is inactive. >>> --> Skipping --destroy because no associated physical volumes are found >>> for >>> /dev/dm-0 >>> Running command: wipefs --all /dev/dm-0 >>> stderr: wipefs: error: /dev/dm-0: probing initialization failed: Device >>> or >>> resource busy >>> --> RuntimeError: command returned non-zero exit status: 1 >>> >>> >>> On 12.06.2018 09:03, Linh Vu wrote: >>> >>> ceph-volume lvm zap --destroy $DEVICE >>> >>> ________________________________ >>> From: ceph-users <ceph-users-bounces@xxxxxxxxxxxxxx> on behalf of Vadim >>> Bulst <vadim.bulst@xxxxxxxxxxxxxx> >>> Sent: Tuesday, 12 June 2018 4:46:44 PM >>> To: ceph-users@xxxxxxxxxxxxxx >>> Subject: Re: Filestore -> Bluestore >>> >>> >>> Thanks Sergey. >>> >>> Could you specify your answer a bit more? When I look into the manpage of >>> ceph-volume I couldn't find an option named "--destroy". >>> >>> I just like to make clear - this script has already migrated several >>> servers. The problem is appearing when it should migrate devices in the >>> expansion shelf. >>> >>> "--> RuntimeError: Cannot use device (/dev/dm-0). A vg/lv path or an >>> existing device is needed" >>> >>> Cheers, >>> >>> Vadim >>> >>> >>> I would say the handling of devices >>> On 11.06.2018 23:58, Sergey Malinin wrote: >>> >>> “Device or resource busy” error rises when no “--destroy” option is >>> passed >>> to ceph-volume. >>> On Jun 11, 2018, 22:44 +0300, Vadim Bulst <vadim.bulst@xxxxxxxxxxxxxx>, >>> wrote: >>> >>> Dear Cephers, >>> >>> I'm trying to migrate our OSDs to Bluestore using this little script: >>> >>> #!/bin/bash >>> HOSTNAME=$(hostname -s) >>> OSDS=`ceph osd metadata | jq -c '[.[] | select(.osd_objectstore | >>> contains("filestore")) ]' | jq '[.[] | select(.hostname | >>> contains("'${HOSTNAME}'")) ]' | jq '.[].id'` >>> IFS=' ' read -a OSDARRAY <<<$OSDS >>> for OSD in "${OSDARRAY[@]}"; do >>> DEV=/dev/`ceph osd metadata | jq -c '.[] | select(.id=='${OSD}') | >>> .backend_filestore_dev_node' | sed 's/"//g'` >>> echo "=== Migrating OSD nr ${OSD} on device ${DEV} ===" >>> ceph osd out ${OSD} >>> while ! ceph osd safe-to-destroy ${OSD} ; do echo "waiting for full >>> evacuation"; sleep 60 ; done >>> systemctl stop ceph-osd@${OSD} >>> umount /var/lib/ceph/osd/ceph-${OSD} >>> /usr/sbin/ceph-volume lvm zap ${DEV} >>> ceph osd destroy ${OSD} --yes-i-really-mean-it >>> /usr/sbin/ceph-volume lvm create --bluestore --data ${DEV} >>> --osd-id ${OSD} >>> done >>> >>> Unfortunately - under normal circumstances this works flawlessly. In our >>> case we have expansion shelfs connected as multipath devices to our >>> nodes. >>> >>> /usr/sbin/ceph-volume lvm zap ${DEV} is breaking with an error: >>> >>> OSD(s) 1 are safe to destroy without reducing data durability. >>> --> Zapping: /dev/dm-0 >>> Running command: /sbin/cryptsetup status /dev/mapper/ >>> stdout: /dev/mapper/ is inactive. >>> Running command: wipefs --all /dev/dm-0 >>> stderr: wipefs: error: /dev/dm-0: probing initialization failed: >>> Device or resource busy >>> --> RuntimeError: command returned non-zero exit status: 1 >>> destroyed osd.1 >>> Running command: /usr/bin/ceph-authtool --gen-print-key >>> Running command: /usr/bin/ceph --cluster ceph --name >>> client.bootstrap-osd --keyring /var/lib/ceph/bootstrap-osd/ceph.keyring >>> osd tree -f json >>> Running command: /usr/bin/ceph --cluster ceph --name >>> client.bootstrap-osd --keyring /var/lib/ceph/bootstrap-osd/ceph.keyring >>> -i - osd new 74f6ff02-d027-4fc6-9b93-3a96d753 >>> 5c8f 1 >>> --> Was unable to complete a new OSD, will rollback changes >>> --> OSD will be destroyed, keeping the ID because it was provided with >>> --osd-id >>> Running command: ceph osd destroy osd.1 --yes-i-really-mean-it >>> stderr: destroyed osd.1 >>> >>> --> RuntimeError: Cannot use device (/dev/dm-0). A vg/lv path or an >>> existing device is needed >>> >>> >>> Does anybody know how to solve this problem? >>> >>> Cheers, >>> >>> Vadim >>> >>> -- >>> Vadim Bulst >>> >>> Universität Leipzig / URZ >>> 04109 Leipzig, Augustusplatz 10 >>> >>> phone: +49-341-97-33380 >>> mail: vadim.bulst@xxxxxxxxxxxxxx >>> >>> _______________________________________________ >>> ceph-users mailing list >>> ceph-users@xxxxxxxxxxxxxx >>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >>> >>> >>> -- >>> Vadim Bulst >>> >>> Universität Leipzig / URZ >>> 04109 Leipzig, Augustusplatz 10 >>> >>> phone: ++49-341-97-33380 >>> mail: vadim.bulst@xxxxxxxxxxxxxx >>> >>> >>> -- >>> Vadim Bulst >>> >>> Universität Leipzig / URZ >>> 04109 Leipzig, Augustusplatz 10 >>> >>> phone: ++49-341-97-33380 >>> mail: vadim.bulst@xxxxxxxxxxxxxx >>> >>> >>> _______________________________________________ >>> ceph-users mailing list >>> ceph-users@xxxxxxxxxxxxxx >>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >>> > > -- > Vadim Bulst > > Universität Leipzig / URZ > 04109 Leipzig, Augustusplatz 10 > > phone: ++49-341-97-33380 > mail: vadim.bulst@xxxxxxxxxxxxxx > > > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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