I have a VG which had two LVs. I removed the drives for the second LV
from the system without disabling the LV or otherwise letting LVM know.
Now LVM refuses to start the VG back up (which is reasonable behavior).
However, I wish to inform LVM that the two drives I removed are not
going to reappear, and I would like it to start up and just give me the
remaining LV. The --removemissing flag to vgreduce seems like it should
be exactly what I'm looking for, and when run indicates that it is doing
the right thing. But it doesn't seem to actually make any changes.
[root@typhoon ~]# pvdisplay
Couldn't find device with uuid '5Ztw2o-Ooa8-AYX3-XE56-HR9T-uRQI-75YTuA'.
Couldn't find device with uuid 'O4kqGt-VEKo-yavU-R8yN-PGjF-mWjF-a9tdWt'.
--- Physical volume ---
PV Name /dev/sda1
VG Name typhoon
PV Size 186.28 GB / not usable 0
Allocatable yes (but full)
PE Size (KByte) 32768
Total PE 5961
Free PE 0
Allocated PE 5961
PV UUID tVs73X-iCjn-JkPe-uakW-teze-yCXX-LegeRB
--- Physical volume ---
PV Name unknown device
VG Name typhoon
PV Size 186.28 GB / not usable 0
Allocatable yes (but full)
PE Size (KByte) 32768
Total PE 5961
Free PE 0
Allocated PE 5961
PV UUID 5Ztw2o-Ooa8-AYX3-XE56-HR9T-uRQI-75YTuA
--- Physical volume ---
PV Name unknown device
VG Name typhoon
PV Size 111.78 GB / not usable 0
Allocatable yes (but full)
PE Size (KByte) 32768
Total PE 3577
Free PE 0
Allocated PE 3577
PV UUID O4kqGt-VEKo-yavU-R8yN-PGjF-mWjF-a9tdWt
[root@typhoon ~]# vgreduce --removemissing --verbose typhoon
Finding volume group "typhoon"
Couldn't find device with uuid '5Ztw2o-Ooa8-AYX3-XE56-HR9T-uRQI-75YTuA'.
Couldn't find all physical volumes for volume group typhoon.
Couldn't find device with uuid '5Ztw2o-Ooa8-AYX3-XE56-HR9T-uRQI-75YTuA'.
Couldn't find device with uuid 'O4kqGt-VEKo-yavU-R8yN-PGjF-mWjF-a9tdWt'.
Archiving volume group "typhoon" metadata.
typhoon/backups has missing extents: removing (including dependencies)
Deactivating (if active) logical volume backups
Couldn't find device with uuid '5Ztw2o-Ooa8-AYX3-XE56-HR9T-uRQI-75YTuA'.
Couldn't find device with uuid 'O4kqGt-VEKo-yavU-R8yN-PGjF-mWjF-a9tdWt'.
Found volume group "typhoon"
Couldn't find device with uuid '5Ztw2o-Ooa8-AYX3-XE56-HR9T-uRQI-75YTuA'.
Couldn't find device with uuid 'O4kqGt-VEKo-yavU-R8yN-PGjF-mWjF-a9tdWt'.
Found volume group "typhoon"
Removing LV backups from VG typhoon
typhoon/backups has missing extents: removing (including dependencies)
Deactivating (if active) logical volume backups
Couldn't find device with uuid '5Ztw2o-Ooa8-AYX3-XE56-HR9T-uRQI-75YTuA'.
Couldn't find device with uuid 'O4kqGt-VEKo-yavU-R8yN-PGjF-mWjF-a9tdWt'.
Found volume group "typhoon"
Couldn't find device with uuid '5Ztw2o-Ooa8-AYX3-XE56-HR9T-uRQI-75YTuA'.
Couldn't find device with uuid 'O4kqGt-VEKo-yavU-R8yN-PGjF-mWjF-a9tdWt'.
Found volume group "typhoon"
Removing LV backups from VG typhoon
[root@typhoon ~]# pvdisplay
Couldn't find device with uuid '5Ztw2o-Ooa8-AYX3-XE56-HR9T-uRQI-75YTuA'.
Couldn't find device with uuid 'O4kqGt-VEKo-yavU-R8yN-PGjF-mWjF-a9tdWt'.
--- Physical volume ---
PV Name /dev/sda1
VG Name typhoon
PV Size 186.28 GB / not usable 0
Allocatable yes (but full)
PE Size (KByte) 32768
Total PE 5961
Free PE 0
Allocated PE 5961
PV UUID tVs73X-iCjn-JkPe-uakW-teze-yCXX-LegeRB
--- Physical volume ---
PV Name unknown device
VG Name typhoon
PV Size 186.28 GB / not usable 0
Allocatable yes (but full)
PE Size (KByte) 32768
Total PE 5961
Free PE 0
Allocated PE 5961
PV UUID 5Ztw2o-Ooa8-AYX3-XE56-HR9T-uRQI-75YTuA
--- Physical volume ---
PV Name unknown device
VG Name typhoon
PV Size 111.78 GB / not usable 0
Allocatable yes (but full)
PE Size (KByte) 32768
Total PE 3577
Free PE 0
Allocated PE 3577
PV UUID O4kqGt-VEKo-yavU-R8yN-PGjF-mWjF-a9tdWt
--
Jason Heiss
PGP key: http://ofb.net/~jheiss/jheiss.pgp.txt
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