Red Hat Summit9.10. RAID 논리 볼륨을 다른 RAID 수준으로 변환
LVM은 RAID 논리 볼륨을 하나의 RAID 수준에서 다른 RAID 수준으로 변환하는 것을 의미합니다(예: RAID 5에서 RAID 6로 변환). RAID 수준을 변경하여 장치 오류에 대한 복원력을 늘리거나 줄일 수 있습니다.
프로세스
RAID 논리 볼륨을 생성합니다.
lvcreate --type raid5 -i 3 -L 500M -n my_lv my_vg Using default stripesize 64.00 KiB. Rounding size 500.00 MiB (125 extents) up to stripe boundary size 504.00 MiB (126 extents). Logical volume "my_lv" created.
# lvcreate --type raid5 -i 3 -L 500M -n my_lv my_vg Using default stripesize 64.00 KiB. Rounding size 500.00 MiB (125 extents) up to stripe boundary size 504.00 MiB (126 extents). Logical volume "my_lv" created.Copy to Clipboard Copied! Toggle word wrap Toggle overflow RAID 논리 볼륨을 확인합니다.
lvs -a -o +devices,segtype LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert Devices Type my_lv my_vg rwi-a-r--- 504.00m 100.00 my_lv_rimage_0(0),my_lv_rimage_1(0),my_lv_rimage_2(0),my_lv_rimage_3(0) raid5 [my_lv_rimage_0] my_vg iwi-aor--- 168.00m /dev/sda(1) linear [my_lv_rimage_1] my_vg iwi-aor--- 168.00m /dev/sdb(1) linear [my_lv_rimage_2] my_vg iwi-aor--- 168.00m /dev/sdc(1) linear [my_lv_rimage_3] my_vg iwi-aor--- 168.00m /dev/sdd(1) linear [my_lv_rmeta_0] my_vg ewi-aor--- 4.00m /dev/sda(0) linear [my_lv_rmeta_1] my_vg ewi-aor--- 4.00m /dev/sdb(0) linear [my_lv_rmeta_2] my_vg ewi-aor--- 4.00m /dev/sdc(0) linear [my_lv_rmeta_3] my_vg ewi-aor--- 4.00m /dev/sdd(0) linear
# lvs -a -o +devices,segtype LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert Devices Type my_lv my_vg rwi-a-r--- 504.00m 100.00 my_lv_rimage_0(0),my_lv_rimage_1(0),my_lv_rimage_2(0),my_lv_rimage_3(0) raid5 [my_lv_rimage_0] my_vg iwi-aor--- 168.00m /dev/sda(1) linear [my_lv_rimage_1] my_vg iwi-aor--- 168.00m /dev/sdb(1) linear [my_lv_rimage_2] my_vg iwi-aor--- 168.00m /dev/sdc(1) linear [my_lv_rimage_3] my_vg iwi-aor--- 168.00m /dev/sdd(1) linear [my_lv_rmeta_0] my_vg ewi-aor--- 4.00m /dev/sda(0) linear [my_lv_rmeta_1] my_vg ewi-aor--- 4.00m /dev/sdb(0) linear [my_lv_rmeta_2] my_vg ewi-aor--- 4.00m /dev/sdc(0) linear [my_lv_rmeta_3] my_vg ewi-aor--- 4.00m /dev/sdd(0) linearCopy to Clipboard Copied! Toggle word wrap Toggle overflow RAID 논리 볼륨을 다른 RAID 수준으로 변환합니다.
lvconvert --type raid6 my_vg/my_lv Using default stripesize 64.00 KiB. Replaced LV type raid6 (same as raid6_zr) with possible type raid6_ls_6. Repeat this command to convert to raid6 after an interim conversion has finished. Are you sure you want to convert raid5 LV my_vg/my_lv to raid6_ls_6 type? [y/n]: y Logical volume my_vg/my_lv successfully converted.
# lvconvert --type raid6 my_vg/my_lv Using default stripesize 64.00 KiB. Replaced LV type raid6 (same as raid6_zr) with possible type raid6_ls_6. Repeat this command to convert to raid6 after an interim conversion has finished. Are you sure you want to convert raid5 LV my_vg/my_lv to raid6_ls_6 type? [y/n]: y Logical volume my_vg/my_lv successfully converted.Copy to Clipboard Copied! Toggle word wrap Toggle overflow 선택 사항: 이 명령이 변환을 반복하라는 메시지를 표시하는 경우 다음을 실행합니다.
lvconvert --type raid6 my_vg/my_lv
# lvconvert --type raid6 my_vg/my_lvCopy to Clipboard Copied! Toggle word wrap Toggle overflow
검증
변환된 RAID 수준으로 RAID 논리 볼륨을 확인합니다.
lvs -a -o +devices,segtype LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert Devices Type my_lv my_vg rwi-a-r--- 504.00m 100.00 my_lv_rimage_0(0),my_lv_rimage_1(0),my_lv_rimage_2(0),my_lv_rimage_3(0),my_lv_rimage_4(0) raid6 [my_lv_rimage_0] my_vg iwi-aor--- 168.00m /dev/sda(2) linear [my_lv_rimage_1] my_vg iwi-aor--- 168.00m /dev/sdb(2) linear [my_lv_rimage_2] my_vg iwi-aor--- 168.00m /dev/sdc(2) linear [my_lv_rimage_3] my_vg iwi-aor--- 168.00m /dev/sdd(2) linear [my_lv_rimage_4] my_vg iwi-aor--- 168.00m /dev/sde(2) linear [my_lv_rmeta_0] my_vg ewi-aor--- 4.00m /dev/sda(0) linear [my_lv_rmeta_1] my_vg ewi-aor--- 4.00m /dev/sdb(0) linear [my_lv_rmeta_2] my_vg ewi-aor--- 4.00m /dev/sdc(0) linear [my_lv_rmeta_3] my_vg ewi-aor--- 4.00m /dev/sdd(0) linear [my_lv_rmeta_4] my_vg ewi-aor--- 4.00m /dev/sde(0) linear
# lvs -a -o +devices,segtype LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert Devices Type my_lv my_vg rwi-a-r--- 504.00m 100.00 my_lv_rimage_0(0),my_lv_rimage_1(0),my_lv_rimage_2(0),my_lv_rimage_3(0),my_lv_rimage_4(0) raid6 [my_lv_rimage_0] my_vg iwi-aor--- 168.00m /dev/sda(2) linear [my_lv_rimage_1] my_vg iwi-aor--- 168.00m /dev/sdb(2) linear [my_lv_rimage_2] my_vg iwi-aor--- 168.00m /dev/sdc(2) linear [my_lv_rimage_3] my_vg iwi-aor--- 168.00m /dev/sdd(2) linear [my_lv_rimage_4] my_vg iwi-aor--- 168.00m /dev/sde(2) linear [my_lv_rmeta_0] my_vg ewi-aor--- 4.00m /dev/sda(0) linear [my_lv_rmeta_1] my_vg ewi-aor--- 4.00m /dev/sdb(0) linear [my_lv_rmeta_2] my_vg ewi-aor--- 4.00m /dev/sdc(0) linear [my_lv_rmeta_3] my_vg ewi-aor--- 4.00m /dev/sdd(0) linear [my_lv_rmeta_4] my_vg ewi-aor--- 4.00m /dev/sde(0) linearCopy to Clipboard Copied! Toggle word wrap Toggle overflow
'%20d='M201.5%20305.5c-13.8%200-24.9-11.1-24.9-24.6%200-13.8%2011.1-24.9%2024.9-24.9%2013.6%200%2024.6%2011.1%2024.6%2024.9%200%2013.6-11.1%2024.6-24.6%2024.6zM504%20256c0%20137-111%20248-248%20248S8%20393%208%20256%20119%208%20256%208s248%20111%20248%20248zm-132.3-41.2c-9.4%200-17.7%203.9-23.8%2010-22.4-15.5-52.6-25.5-86.1-26.6l17.4-78.3%2055.4%2012.5c0%2013.6%2011.1%2024.6%2024.6%2024.6%2013.8%200%2024.9-11.3%2024.9-24.9s-11.1-24.9-24.9-24.9c-9.7%200-18%205.8-22.1%2013.8l-61.2-13.6c-3-.8-6.1%201.4-6.9%204.4l-19.1%2086.4c-33.2%201.4-63.1%2011.3-85.5%2026.8-6.1-6.4-14.7-10.2-24.1-10.2-34.9%200-46.3%2046.9-14.4%2062.8-1.1%205-1.7%2010.2-1.7%2015.5%200%2052.6%2059.2%2095.2%20132%2095.2%2073.1%200%20132.3-42.6%20132.3-95.2%200-5.3-.6-10.8-1.9-15.8%2031.3-16%2019.8-62.5-14.9-62.5zM302.8%20331c-18.2%2018.2-76.1%2017.9-93.6%200-2.2-2.2-6.1-2.2-8.3%200-2.5%202.5-2.5%206.4%200%208.6%2022.8%2022.8%2087.3%2022.8%20110.2%200%202.5-2.2%202.5-6.1%200-8.6-2.2-2.2-6.1-2.2-8.3%200zm7.7-75c-13.6%200-24.6%2011.1-24.6%2024.9%200%2013.6%2011.1%2024.6%2024.6%2024.6%2013.8%200%2024.9-11.1%2024.9-24.6%200-13.8-11-24.9-24.9-24.9z'/%3e%3c/svg%3e){kind=small}