Create Mirroring Volume2022/09/13 |
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Create Mirroring Volume.
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| [1] | For example, create a Mirroring Volume with Physical Volume [/dev/sdb1] and [/dev/sdc1]. |
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# create volume group [vg_mirror] with [/dev/sdb1] and [/dev/sdc1] root@dlp:~# vgcreate vg_mirror /dev/sdb1 /dev/sdc1 Volume group "vg_mirror" successfully created # create mirroring volume root@dlp:~# lvcreate -L 50G -m1 -n lv_mirror vg_mirror Logical volume "lv_mirror" created.root@dlp:~# lvdisplay /dev/vg_mirror/lv_mirror --- Logical volume --- LV Path /dev/vg_mirror/lv_mirror LV Name lv_mirror VG Name vg_mirror LV UUID pUaKRV-hvVA-v12R-3fV6-nRWk-mIHO-riPmso LV Write Access read/write LV Creation host, time dlp.srv.world, 2022-09-13 01:25:31 +0000 LV Status available # open 0 LV Size 50.00 GiB Current LE 12800 Mirrored volumes 2 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:5 |
| [2] | Configure like follows if you'd like to set mirroring volume from a logical volume which is already running. |
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# extend volume group root@dlp:~# vgextend vg_data /dev/sdc1 Volume group "vg_data" successfully extended # set mirror volume root@dlp:~# lvconvert -m1 /dev/vg_data/lv_data /dev/sdc1
# confirm : complete to sync if Cpy%Sync turns to 100 root@dlp:~# lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert ubuntu-lv ubuntu-vg -wi-ao---- 77.00g lv_mirror vg_mirror rwi-a-r--- 50.00g 67.99 |
| [3] | Unset Mirroring Volume. |
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# specify -m0 to unset root@dlp:~# lvconvert -m0 /dev/vg_mirror/lv_mirror
Are you sure you want to convert raid1 LV vg_mirror/lv_mirror to type linear losing all resilience? [y/n]: y
Logical volume vg_mirror/lv_mirror successfully converted.
root@dlp:~# lvs -a -o vg_name,name,devices,size VG LV Devices LSize ubuntu-vg ubuntu-lv /dev/sda3(0) 77.00g vg_mirror lv_mirror /dev/sdb1(1) 50.00g |
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