Multipath is not creating mpath devices for all devices in RHEL
Issue
- A client noticed that a LVM Logical Volume wasn't complete, missing a single Physical Volume. Running pvscan showed:
[root@server ~]\# pvscan
Couldn't find device with uuid 'xrlmf7-YX4q-jPZB-THLi-DLkO-DqpD-becG4h'.
Warning: Volume Group vgTISLNXD1 is not consistent
PV /dev/mapper/mpath6 VG vgTISLNXD1 lvm2 [68.08 GB / 68.08 GB free]
PV /dev/mapper/mpath7 VG vgTISLNXD1 lvm2 [68.08 GB / 0 free]
PV /dev/mapper/mpath8 VG vgTISLNXD1 lvm2 [68.08 GB / 0 free]
PV /dev/mapper/mpath11 VG vgTISLNXD1 lvm2 [68.08 GB / 0 free]
PV /dev/mapper/mpath10 VG vgTISLNXD1 lvm2 [68.08 GB / 16.31 GB free]
PV unknown device VG vgTISLNXD1 lvm2 [68.08 GB / 68.08 GB free]
Total: 6 [408.47 GB] / in use: 6 [408.47 GB] / in no VG: 0 [0 ]
From /etc/lvm/archive backups they could see that the missing PV was at one time /dev/mapper/mpath12, but mpath12 no longer exists.
Environment
- Red Hat Enterprise Linux 4
- Red Hat Enterprise Linux 5
- device-mapper-multipath
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