====== Клонирование диска, добавленного в LVM ======
===== Вступление =====
При клонировании диска, ранее добавленного в LVM, на выходе получим логический конфликт - UUID блочных устройств будут совпадать, о чём нам сообщит менеджер:
pvs
Found duplicate PV 7Xk2Paipbhbpk4z3QU0xpqtjeDC0Jf8b: using /dev/vdb not /dev/vdc
Using duplicate PV /dev/vdb without holders, replacing /dev/vdc
PV VG Fmt Attr PSize PFree
/dev/vdb vg00 lvm2 a-- 1020,00m 0
----
===== Исходные данные =====
pvdisplay
--- Physical volume ---
PV Name /dev/vdb
VG Name vg00
PV Size 1,00 GiB / not usable 4,00 MiB
Allocatable yes (but full)
PE Size 4,00 MiB
Total PE 255
Free PE 0
Allocated PE 255
PV UUID 7Xk2Pa-ipbh-bpk4-z3QU-0xpq-tjeD-C0Jf8b
\\
vgdisplay
--- Volume group ---
VG Name vg00
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 1020,00 MiB
PE Size 4,00 MiB
Total PE 255
Alloc PE / Size 255 / 1020,00 MiB
Free PE / Size 0 / 0
VG UUID vAh1eD-qoG3-e1h3-KUD0-NdOx-actC-IrRidA
\\
lvdisplay
--- Logical volume ---
LV Path /dev/vg00/lv01
LV Name lv01
VG Name vg00
LV UUID ZZ29Ki-aPTh-62Ad-PWGu-jykB-PHxr-K7sm9l
LV Write Access read/write
LV Creation host, time i-8745-35715-VM, 2016-12-04 21:58:42 +0300
LV Status available
# open 0
LV Size 508,00 MiB
Current LE 127
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 252:0
--- Logical volume ---
LV Path /dev/vg00/lv02
LV Name lv02
VG Name vg00
LV UUID gVX1e2-cTOd-iwSj-iSXf-4NIi-pRBY-eYRXSS
LV Write Access read/write
LV Creation host, time i-8745-35715-VM, 2016-12-04 21:58:52 +0300
LV Status available
# open 0
LV Size 512,00 MiB
Current LE 128
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 252:1
\\
----
===== Решение =====
Для решения такой проблемы имеется утилита **vgimportclone**:
vgimportclone -n old_vg_name new_pv
* В контексте нашего примера выполняем:
vgimportclone -n vg00 /dev/vdc
Found duplicate PV 7Xk2Paipbhbpk4z3QU0xpqtjeDC0Jf8b: using /dev/vdb not /dev/vdc
Using duplicate PV /dev/vdb without holders, replacing /dev/vdc
WARNING: lvmetad is running but disabled. Restart lvmetad before enabling it!
WARNING: Activation disabled. No device-mapper interaction will be attempted.
WARNING: lvmetad is running but disabled. Restart lvmetad before enabling it!
Physical volume "/tmp/snap.orq5PSlR/vgimport0" changed
1 physical volume changed / 0 physical volumes not changed
WARNING: lvmetad is running but disabled. Restart lvmetad before enabling it!
WARNING: Activation disabled. No device-mapper interaction will be attempted.
WARNING: lvmetad is running but disabled. Restart lvmetad before enabling it!
Volume group "vg00" successfully changed
WARNING: lvmetad is running but disabled. Restart lvmetad before enabling it!
WARNING: lvmetad is running but disabled. Restart lvmetad before enabling it!
Volume group "vg00" successfully renamed to "vg001"
----
===== Результат =====
pvdisplay
--- Physical volume ---
PV Name /dev/vdc
VG Name vg001
PV Size 1,00 GiB / not usable 4,00 MiB
Allocatable yes (but full)
PE Size 4,00 MiB
Total PE 255
Free PE 0
Allocated PE 255
PV UUID yCBF49-HTrc-K8Rt-1EtJ-kaXA-kKb7-KHwM3i
--- Physical volume ---
PV Name /dev/vdb
VG Name vg00
PV Size 1,00 GiB / not usable 4,00 MiB
Allocatable yes (but full)
PE Size 4,00 MiB
Total PE 255
Free PE 0
Allocated PE 255
PV UUID 7Xk2Pa-ipbh-bpk4-z3QU-0xpq-tjeD-C0Jf8b
\\
vgdisplay
--- Volume group ---
VG Name vg001
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 6
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 1020,00 MiB
PE Size 4,00 MiB
Total PE 255
Alloc PE / Size 255 / 1020,00 MiB
Free PE / Size 0 / 0
VG UUID eoUb4u-dDh8-vFOg-LVoR-j0nD-Uese-PFsCol
--- Volume group ---
VG Name vg00
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 1020,00 MiB
PE Size 4,00 MiB
Total PE 255
Alloc PE / Size 255 / 1020,00 MiB
Free PE / Size 0 / 0
VG UUID vAh1eD-qoG3-e1h3-KUD0-NdOx-actC-IrRidA
\\
lvdisplay
--- Logical volume ---
LV Path /dev/vg001/lv01
LV Name lv01
VG Name vg001
LV UUID ZZ29Ki-aPTh-62Ad-PWGu-jykB-PHxr-K7sm9l
LV Write Access read/write
LV Creation host, time i-8745-35715-VM, 2016-12-04 21:58:42 +0300
LV Status NOT available
LV Size 508,00 MiB
Current LE 127
Segments 1
Allocation inherit
Read ahead sectors auto
--- Logical volume ---
LV Path /dev/vg001/lv02
LV Name lv02
VG Name vg001
LV UUID gVX1e2-cTOd-iwSj-iSXf-4NIi-pRBY-eYRXSS
LV Write Access read/write
LV Creation host, time i-8745-35715-VM, 2016-12-04 21:58:52 +0300
LV Status NOT available
LV Size 512,00 MiB
Current LE 128
Segments 1
Allocation inherit
Read ahead sectors auto
--- Logical volume ---
LV Path /dev/vg00/lv01
LV Name lv01
VG Name vg00
LV UUID ZZ29Ki-aPTh-62Ad-PWGu-jykB-PHxr-K7sm9l
LV Write Access read/write
LV Creation host, time i-8745-35715-VM, 2016-12-04 21:58:42 +0300
LV Status available
# open 0
LV Size 508,00 MiB
Current LE 127
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 252:0
--- Logical volume ---
LV Path /dev/vg00/lv02
LV Name lv02
VG Name vg00
LV UUID gVX1e2-cTOd-iwSj-iSXf-4NIi-pRBY-eYRXSS
LV Write Access read/write
LV Creation host, time i-8745-35715-VM, 2016-12-04 21:58:52 +0300
LV Status available
# open 0
LV Size 512,00 MiB
Current LE 128
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 252:1
\\
* Обращаем внимание на то, что логические тома нового устройства неактивны.
# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
lv01 vg00 -wi-a----- 508,00m
lv02 vg00 -wi-a----- 512,00m
lv01 vg001 -wi------- 508,00m
lv02 vg001 -wi------- 512,00m
* Для активации выполняем:
lvchange -ay /dev/vg001/lv01
lvchange -ay /dev/vg001/lv02
# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
lv01 vg00 -wi-a----- 508,00m
lv02 vg00 -wi-a----- 512,00m
lv01 vg001 -wi-a----- 508,00m
lv02 vg001 -wi-a----- 512,00m