Logical volume group partition inactive

We rebooted a one of our linux machine which is running a database, After rebooted We can’t able to start the database due to the one of partition of the logical volume group has missing.

[root@ezylebuat ~]# pvs
WARNING: Device for PV EiG4AR-8JDt-bzEj-5si7-Wf4z-xrYC-a8zXgu not found or rejected by a filter.
WARNING: Device for PV HfPGnn-1bgb-j1HH-7Xvd-6hvq-yk14-jMCrkM not found or rejected by a filter.
PV VG Fmt Attr PSize PFree
/dev/sda2 ol lvm2 a– <199.00g 0
[unknown] ol lvm2 a-m <50.00g 0
[unknown] ol lvm2 a-m <50.00g <50.00g

[root@ezylebuat ~]# lvscan
WARNING: Device for PV EiG4AR-8JDt-bzEj-5si7-Wf4z-xrYC-a8zXgu not found or rejected by a filter.
WARNING: Device for PV HfPGnn-1bgb-j1HH-7Xvd-6hvq-yk14-jMCrkM not found or rejected by a filter.
inactive ‘/dev/ol/u01’ [<167.00 GiB] inherit
ACTIVE ‘/dev/ol/swap’ [<32.00 GiB] inherit
ACTIVE ‘/dev/ol/home’ [25.00 GiB] inherit
ACTIVE ‘/dev/ol/root’ [25.00 GiB] inherit

Solution :

activate the volume group

[root@ezylebuat ~]# vgchange -a y –partial ol
PARTIAL MODE. Incomplete logical volumes will be processed.
WARNING: Device for PV EiG4AR-8JDt-bzEj-5si7-Wf4z-xrYC-a8zXgu not found or rejected by a filter.
WARNING: Device for PV HfPGnn-1bgb-j1HH-7Xvd-6hvq-yk14-jMCrkM not found or rejected by a filter.
4 logical volume(s) in volume group “ol” now active

[root@ezylebuat ~]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 7.7G 0 7.7G 0% /dev
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 7.8G 8.9M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/mapper/ol-root 25G 16G 9.5G 63% /
/dev/mapper/ol-home 25G 39M 25G 1% /home
tmpfs 1.6G 40K 1.6G 1% /run/user/0
/dev/sda1 1014M 266M 749M 27% /boot
/dev/sdb1 99G 31G 63G 34% /backup
/dev/mapper/ol-u01 117G 101G 17G 86% /u01

[root@ezylebuat ~]# lvdisplay
WARNING: Device for PV EiG4AR-8JDt-bzEj-5si7-Wf4z-xrYC-a8zXgu not found or rejected by a filter.
WARNING: Device for PV HfPGnn-1bgb-j1HH-7Xvd-6hvq-yk14-jMCrkM not found or rejected by a filter.
— Logical volume —
LV Path /dev/ol/u01
LV Name u01
VG Name ol
LV UUID OoQvh4-9PRs-zVY3-ZFbO-SGn9-qUng-iJR2wL
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2018-01-17 11:43:54 +0300
LV Status available
# open 1
LV Size <167.00 GiB
Current LE 42751
Segments 2
Allocation inherit
Read ahead sectors auto
– currently set to 8192
Block device 249:4

After volume group activated , I can able to start the database . Even though  I can see the some of the HDD server failure, So  I plan to migrate the database to other machine.