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== Extindere disk live in Ubuntu 2X.04 LTS == Cu VM pornit verificam disk-ul in scop cu ce partitii, VG si LV se prezinta: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- -->  # 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   ...... </code> De asemenea facem o verificare a mount-urilor pentru disk-ul in scop: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- -->  # df -h   Filesystem Size Used Avail Use% Mounted on   ......   /dev/mapper/vg_wiki-lv_wiki_1 5.9G 24K 5.6G 1% /wiki/lv1   /dev/mapper/vg_wiki-lv_wiki_2 3.9G 24K 3.7G 1% /wiki/lv2 </code> === Extindere HDD === Procedam la extinderea disk-ului in hypervisor (ex Proxmox VM): <gallery> File:pveext01.jpg File:pveext02.jpg File:pveext03.jpg </gallery> Fara a restarta masina virtuala este nevoie de rescanarea disk-ului pentru a colecta informatiile legate de noua capacitate: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- -->  # echo 1 > /sys/block/<span style="color:#f00">sdb</span>/device/rescan </code> Apoi ne asiguram ca OS-ul scanat disk-ul: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- -->  # lsblk   NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS   ......   sdb 8:16 0 <span style="color:#f00">20G</span> 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   ...... </code> === Extindere Partitie === Dupe ce a fost extins disk-ul fizic trebuie extinsa si partitia aflata pe respectivul disk: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- -->  # growpart /dev/sdb 1   CHANGED: partition=1 start=2048 old: size=31455199 end=31457246 new: size=41940959 end=41943006   # pvresize /dev/sdb1     Physical volume "/dev/sdb1" changed     1 physical volume(s) resized or updated / 0 physical volume(s) not resized </code> Apoi ne asiguram ca extinderea se reflecta pe partitie in OS: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- -->  # lsblk   NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS   ......   sdb 8:16 0 <span style="color:#f00">20G</span> 0 disk   └─sdb1 8:17 0 <span style="color:#f00">20G</span> 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   ...... </code> === Extindere Logical Volume === In continuare dorim sa marim lv_wiki_1 cu 7GB 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 <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- -->  # vgdisplay vg_wiki     --- Volume group ---     VG Name vg_wiki     System ID     Format lvm2     Metadata Areas 1     Metadata Sequence No 8     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     <span style="color:#f00">VG Size <20.00 GiB</span>     PE Size 4.00 MiB     Total PE 3839     <span style="color:#f00">Alloc PE / Size 2559 / <10.00 GiB</span>     <span style="color:#f00">Free PE / Size 1280 / 10.00 GiB</span>     VG UUID LvZwAo-9K3I-Qdvw-x39q-kbGT-9IAn-s7e2Nb </code> Pentru a vedea informatiile volumelor logice rulam: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- -->  # 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     ...... </code> Pentru a vedea informatiile strict necesare in acest caz putem rula: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- -->  # vgs     VG #PV #LV #SN Attr VSize VFree     ......     vg_wiki 1 2 0 wz--n- <20.00g <span style="color:#f00">10.00g</span>   # 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 </code> ==== Extindere lv_wiki_1 cu 7GB ==== Extindem mai intai volumul logic: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- -->  # lvextend -r -L+7G /dev/mapper/vg_wiki-lv_wiki_1     Size of logical volume vg_wiki/lv_wiki_1 changed from 6.00 GiB (1792 extents) to 13.00 GiB (3328 extents).     Logical volume vg_wiki/lv_wiki_1 successfully resized.   resize2fs 1.47.0 (5-Feb-2023)   Filesystem at /dev/mapper/vg_wiki-lv_wiki_1 is mounted on /wiki/lv1; on-line resizing required   old_desc_blocks = 1, new_desc_blocks = 2   The filesystem on /dev/mapper/vg_wiki-lv_wiki_1 is now 3407872 (4k) blocks long. </code> Din verbose-itatea de mai sus observam ca a fost rulat automat si redimensionarea file system-ului, astfel ca putem vedea instant marirea la nivel de mount: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- -->  # df -h /wiki/lv1/   Filesystem Size Used Avail Use% Mounted on   /dev/mapper/vg_wiki-lv_wiki_1 <span style="color:#f00">13G</span> 24K 13G 1% /wiki/lv1 </code> ==== Extindere lv_wiki_2 cu aprox 3GB ==== In VG vg_wiki au mai ramas nealocati aproximativ 3GB: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- --># vgs     VG #PV #LV #SN Attr VSize VFree     ......     vg_wiki 1 2 0 wz--n- <20.00g <span style="color:#f00">3.00g</span> </code> Acesti 3GB ii vom aloca catre lv_wiki_2 in totalitate: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- -->  # lvextend -l +100%FREE /dev/mapper/vg_wiki-lv_wiki_2     Size of logical volume vg_wiki/lv_wiki_2 changed from <4.00 GiB (1023 extents) to <7.00 GiB (1791 extents).     Logical volume vg_wiki/lv_wiki_2 successfully resized. </code> De aceasta data redimenionarea filesystem-ului nu a mai fost facuta in mod automat motiv pentru care acest lucru trebuie sa il facem manual: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- -->  # resize2fs /dev/mapper/vg_wiki-lv_wiki_2   resize2fs 1.47.0 (5-Feb-2023)   Filesystem at /dev/mapper/vg_wiki-lv_wiki_2 is mounted on /wiki/lv2; on-line resizing required   old_desc_blocks = 1, new_desc_blocks = 1   The filesystem on /dev/mapper/vg_wiki-lv_wiki_2 is now 1833984 (4k) blocks long. </code> Dupa redimenionarea filesystem-ului putem vedea extinderea si la nivel de mount: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- -->  # df -h /wiki/lv2/   Filesystem Size Used Avail Use% Mounted on   /dev/mapper/vg_wiki-lv_wiki_2 <span style="color:#f00">6.9G</span> 24K 6.5G 1% /wiki/lv2 </code> === Nota === Situatia extinerii de disk-uri dintr-un VM este diferita si cu un risc mai mare de pierdere a datelor in situatia in care fiecare lv are propia lui partitie: <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- -->  # lsblk   sdb 8:16 0 10G 0 disk   └─sdb1 8:17 0 6G 0 part     └─vg_wiki-lv_wiki_1 252:1 0 6G 0 lvm /wiki/lv1   └─sdb2 8:17 0 4G 0 part     └─vg_wiki-lv_wiki_2 252:2 0 4G 0 lvm /wiki/lv2 </code> ... sau atunci cand disk-urile sunt tratate ca raw-disk <code class="mw-code mw-highlight plainlinks" style="display:block"><!-- -->  # lsblk   sdb 8:16 0 10G 0 disk   ├─sdb1 8:17 0 6G 0 part /wiki/lv1   └─sdb2 8:17 0 4G 0 part /wiki/lv2 </code>
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