Extindere Disk

Extindere disk live in Ubuntu 2X.04 LTS

Cu VM pornit verificam disk-ul in scop cu ce partitii, VG si LV se prezinta:

# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS ...... sdb 8:16 0 10G 0 disk └─sdb1 8:17 0 10G 0 part ├─vg_wiki-lv_wiki_1 252:1 0 6G 0 lvm /wiki/lv1 └─vg_wiki-lv_wiki_2 252:2 0 4G 0 lvm /wiki/lv2 ......

Extindere HDD

Procedam la extinderea disk-ului in hypervisor (ex Proxmox VM):

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Fara a restarta masina virtuala este nevoie de rescanarea disk-ului pentru a colecta informatiile legate de noua capacitate:

# echo 1 > /sys/block/sdb/device/rescan

Apoi ne asiguram ca OS-ul scanat disk-ul:

# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS ...... sdb 8:16 0 15G 0 disk └─sdb1 8:17 0 10G 0 part ├─vg_wiki-lv_wiki_1 252:1 0 6G 0 lvm /wiki/lv1 └─vg_wiki-lv_wiki_2 252:2 0 4G 0 lvm /wiki/lv2 ......

Extindere Partitie

Dupe ce a fost extins disk-ul fizic trebuie extinsa si partitia aflata pe respectivul disk:

# growpart /dev/sdb 1 CHANGED: partition=1 start=2048 old: size=20969472 end=20971519 new: size=31455199 end=31457246 # pvresize /dev/sdb1 Physical volume "/dev/sdb1" changed 1 physical volume(s) resized or updated / 0 physical volume(s) not resized

Apoi ne asiguram ca extinderea se reflecta in OS:

# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS ...... sdb 8:16 0 15G 0 disk └─sdb1 8:17 0 15G 0 part ├─vg_wiki-lv_wiki_1 252:1 0 6G 0 lvm /wiki/lv1 └─vg_wiki-lv_wiki_2 252:2 0 4G 0 lvm /wiki/lv2 ......

Extindere Logical Volume

In continuare dorim sa marim lv_wiki_1 cu 3GB iar restul spatiului disponibil il vom aloca catre lv_wiki_2

Query Logical Volume si Volume Group

Volume group-ul (VG) vg_wiki a fost creeat peste intreaga partitie /dev/sdb1 iar odata cu extinderea partitiei s-a exting si VG-ul

# vgdisplay vg_wiki --- Volume group --- VG Name vg_wiki System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 5 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 2 Max PV 0 Cur PV 1 Act PV 1 VG Size <15.00 GiB PE Size 4.00 MiB Total PE 3839 Alloc PE / Size 2559 / <10.00 GiB Free PE / Size 1280 / 5.00 GiB VG UUID LvZwAo-9K3I-Qdvw-x39q-kbGT-9IAn-s7e2Nb

Pentru a vedea informatiile volumelor logice rulam:

# lvdisplay --- Logical volume --- LV Path /dev/vg_wiki/lv_wiki_1 LV Name lv_wiki_1 VG Name vg_wiki LV UUID 4sOD3P-pYEi-S0Tf-OaYb-83B3-NhCM-lqLSdG LV Write Access read/write LV Creation host, time docktest, 2025-06-27 11:47:34 +0000 LV Status available # open 1 LV Size 6.00 GiB Current LE 1536 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 252:1 --- Logical volume --- LV Path /dev/vg_wiki/lv_wiki_2 LV Name lv_wiki_2 VG Name vg_wiki LV UUID 4UMXIA-7Ftj-UPRf-bccb-Iltw-EoJl-h3U0iZ LV Write Access read/write LV Creation host, time docktest, 2025-06-27 11:47:43 +0000 LV Status available # open 1 LV Size <4.00 GiB Current LE 1023 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 252:2 ......

Pentru a vedea informatiile strict necesare in acest caz putem rula:

# vgs VG #PV #LV #SN Attr VSize VFree ...... vg_wiki 1 2 0 wz--n- <15.00g 5.00g # lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert ...... lv_wiki_1 vg_wiki -wi-ao---- 6.00g lv_wiki_2 vg_wiki -wi-ao---- <4.00g