![]() Next you can verify that all the logical volumes, volume groups and physical volume part of /dev/sdb is missing from the Linux server ~]# lvs -o+devices To restore lvm metadata stored in the file system signature from the backup we can use dd if=~/wipefs-sdb-0x00000218.bak of=/dev/sdb seek=$((0x00000218)) bs=1 conv=notrunc Next un-mount the logical volume ~]# umount /test/ ~]# mkdir ~]# mount /dev/mapper/test_vg-test_lv1 /test/Ĭreate a dummy file and note down the md5sum value of this file ~]# touch ~]# md5sum /test/fileĭ41d8cd98f00b204e9800998ecf8427e /test/file We will put some data into our logical volume to make sure there are no data loss after we recover LVM2 partition, restore PV and restore VG using LVM metadata in the next steps. Test_lv1 test_vg -wi-a- 1.00g /dev/sdb(0) <- new Logical Volume LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert Devices Similarly you can see the new logical volume test_lv1 is mapped to /dev/sdb device ~]# lvs -o+devices Here as you see test_vg is mapped to /dev/sdb ~]# vgs -o+devices List the available volume groups along with the mapped storage device. Writing superblocks and filesystem accounting information: done manually delete the LVM metadata and then steps to recover LVM2 partition, restore PV, restore VG and restore LVM metadata in Linux using vgcfgrestore.ĪLSO READ: define ephemeral disk in OpenStack and compare with persistent storage Create Logical VolumeĬreate a new logical volume test_lv1 under our new volume group test_vg ~]# lvcreate -L 1G -n test_lv1 test_vgĬreate ext4 file system on this new logical volume ~]# mkfs.ext4 /dev/mapper/test_vg-test_lv1Ĭreating filesystem with 262144 4k blocks and 65536 inodesįilesystem UUID: c2d6eff5-f32f-40d4-88a5-a4ffd82ff45a I will share the steps to reproduce the scenario i.e. So we had to restore LVM metadata from the backup using vgcfgrestore. ![]() Due to this all the logical volumes, volume groups and physical volumes mapped to that LVM metadata was not visible on the Linux server. How to restore VG (Volume Group) in LinuxĮarlier we had a situation wherein the LVM metadata from one of our CentOS 8 node was missing.How to restore PV (Physical Volume) in Linux.How to recover LVM2 partition (Restore deleted LVM).Step 5: Verify the data loss after LVM2 partition recovery.Step 3: Restore VG to recover LVM2 partition.Step 2: Restore PV (Physical Volume) in Linux.Step 1: List backup file to restore LVM metadata in Linux.How to manually delete LVM metadata in Linux?. ![]() Create File System on the Logical Volume.
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