{"id":399,"date":"2024-01-07T22:24:00","date_gmt":"2024-01-07T20:24:00","guid":{"rendered":"https:\/\/pauli.work\/?p=399"},"modified":"2025-01-02T22:25:26","modified_gmt":"2025-01-02T20:25:26","slug":"lvm-disk-resizing-without-reboot","status":"publish","type":"post","link":"https:\/\/pauli.work\/?p=399","title":{"rendered":"LVM disk resizing, without reboot."},"content":{"rendered":"\n

Or I wished… <\/p>\n\n\n\n

Step 0: Safety Third:<\/h3>\n\n\n\n

First I backed up VM. I can be a bit monkey brain so critical step.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Step 1: Changes in the file system:<\/h3>\n\n\n\n

VM off and added 10gb to the disk<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

After booting VM we can verify that the disk has become bigger<\/p>\n\n\n\n

root@bitwarden ~# lsblk<\/strong>\nNAME\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 MAJ:MIN RM\u00a0 SIZE RO TYPE MOUNTPOINT\nsda\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 8:0\u00a0\u00a0\u00a0 0\u00a0\u00a0 35G\u00a0 0 disk\n\u251c\u2500sda1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 8:1\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0 1M\u00a0 0 part\n\u251c\u2500sda2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 8:2\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0 1G\u00a0 0 part \/boot\n\u2514\u2500sda3\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 8:3\u00a0\u00a0\u00a0 0\u00a0\u00a0 24G\u00a0 0 part\n\u00a0 \u2514\u2500ubuntu--vg-ubuntu--lv 253:0\u00a0\u00a0\u00a0 0\u00a0\u00a0 20G\u00a0 0 lvm\u00a0 \/\nroot@bitwarden ~# fdisk -l \/dev\/sda<\/strong>\nGPT PMBR size mismatch (52428799 != 73400319) will be corrected by write.\nThe backup GPT table is not on the end of the device. This problem will be corrected by write.\nDisk \/dev\/sda: 35 GiB, 37580963840 bytes, 73400320 sectors\nDisk model: QEMU HARDDISK\u00a0\u00a0\nUnits: sectors of 1 * 512 = 512 bytes\nSector size (logical\/physical): 512 bytes \/ 512 bytes\nI\/O size (minimum\/optimal): 512 bytes \/ 512 bytes\nDisklabel type: gpt\nDisk identifier: 16DB24D7-666C-459B-A2A3-89FCD57DDD3F\n\nDevice\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Start\u00a0\u00a0\u00a0\u00a0\u00a0 End\u00a0 Sectors Size Type\n\/dev\/sda1\u00a0\u00a0\u00a0\u00a0 2048\u00a0\u00a0\u00a0\u00a0 4095\u00a0\u00a0\u00a0\u00a0 2048\u00a0\u00a0 1M BIOS boot\n\/dev\/sda2\u00a0\u00a0\u00a0\u00a0 4096\u00a0 2101247\u00a0 2097152\u00a0\u00a0 1G Linux filesystem\n\/dev\/sda3\u00a0 2101248 52426751 50325504\u00a0 24G Linux filesystem\n<\/code><\/pre>\n\n\n\n
Step 2: We delete everything<\/h3>\n\n\n\n
2.1.2025: I recommend to use cfdisk instead now. Since resizing is simpler with cf disk. # cfdisk \/dev\/sda<\/code> -> resize (Will select the highest capacity) -> write (confirm with yes)<\/p>\n\n\n\n
root@bitwarden ~# fdisk \/dev\/sda<\/strong>\n... truncated output ...\nGPT PMBR size mismatch (52428799 != 73400319) will be corrected by write.\nThe backup GPT table is not on the end of the device. This problem will be corrected by write.\n\nCommand (m for help): p<\/strong>\n\nDisk \/dev\/sda: 35 GiB, 37580963840 bytes, 73400320 sectors\nDisk model: QEMU HARDDISK\u00a0\u00a0\nUnits: sectors of 1 * 512 = 512 bytes\nSector size (logical\/physical): 512 bytes \/ 512 bytes\nI\/O size (minimum\/optimal): 512 bytes \/ 512 bytes\nDisklabel type: gpt\nDisk identifier: 16DB24D7-666C-459B-A2A3-89FCD57DDD3F\n\nDevice\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Start\u00a0\u00a0\u00a0\u00a0\u00a0 End\u00a0 Sectors Size Type\n\/dev\/sda1\u00a0\u00a0\u00a0\u00a0 2048\u00a0\u00a0\u00a0\u00a0 4095\u00a0\u00a0\u00a0\u00a0 2048\u00a0\u00a0 1M BIOS boot\n\/dev\/sda2\u00a0\u00a0\u00a0\u00a0 4096\u00a0 2101247\u00a0 2097152\u00a0\u00a0 1G Linux filesystem\n\/dev\/sda3\u00a0 2101248 52426751 50325504\u00a0 24G Linux filesystem\n\nCommand (m for help): d<\/strong>\nPartition number (1-3, default 3): 3\n\nPartition 3 has been deleted.\n\nCommand (m for help): n<\/strong>\nPartition number (3-128, default 3):\nFirst sector (2101248-73400286, default 2101248):\nLast sector, +\/-sectors or +\/-size{K,M,G,T,P} (2101248-73400286, default 73400286):\n\nCreated a new partition 3 of type 'Linux filesystem' and of size 34 GiB.\nPartition #3 contains a LVM2_member signature.\n\nDo you want to remove the signature? [Y]es\/[N]o: N<\/strong>\n\n<\/code><\/pre>\n\n\n\n
Answer no, or it will delete everything. I messed up here and deleted everything. Had to recover from a backup.<\/p>\n\n\n\n
Command (m for help): f<\/strong>\nf: unknown command\n\nCommand (m for help): t<\/strong>\nPartition number (1-3, default 3):\nPartition type (type L to list all types): 31\n\nChanged type of partition 'Linux filesystem' to 'Linux LVM'.\n\nCommand (m for help): w<\/strong>\nThe partition table has been altered.\nSyncing disks.\nroot@bitwarden ~#<\/code><\/pre>\n\n\n\n
Step 3: Resizing LVM<\/h3>\n\n\n\n
root@bitwarden ~# partprobe \/dev\/sda<\/strong>\nroot@bitwarden ~# vgs<\/strong>\n  VG        #PV #LV #SN Attr   VSize   VFree\n  ubuntu-vg   1   1   0 wz--n- <24.00g<\/strong> <4.00g\nroot@bitwarden ~# pvresize \/dev\/sda3<\/strong>\n  Physical volume \"\/dev\/sda3\" changed\n  1 physical volume(s) resized or updated \/ 0 physical volume(s) not resized\nroot@bitwarden ~# vgs<\/strong>\n  VG        #PV #LV #SN Attr   VSize   VFree \n  ubuntu-vg   1   1   0 wz--n- <34.00g<\/strong> <14.00g\nroot@bitwarden ~# lvresize -l +100%FREE \/dev\/mapper\/ubuntu--vg-ubuntu--lv<\/strong>\n  Size of logical volume ubuntu-vg\/ubuntu-lv changed from 20.00 GiB (5120 extents) to <34.00<\/strong> GiB (8703 extents).\n  Logical volume ubuntu-vg\/ubuntu-lv successfully resized.\nroot@bitwarden ~# pvs\n  PV         VG        Fmt  Attr PSize   PFree\n  \/dev\/sda3  ubuntu-vg lvm2 a--  <34.00g<\/strong>    0\nroot@bitwarden ~#<\/code><\/pre>\n\n\n\n
Step 4: And now for the magic<\/h3>\n\n\n\n
root@bitwarden ~# resize2fs \/dev\/mapper\/ubuntu--vg-ubuntu--lv<\/strong>\nresize2fs 1.45.5 (07-Jan-2020)\nFilesystem at \/dev\/mapper\/ubuntu--vg-ubuntu--lv is mounted on \/; on-line resizing required\nold_desc_blocks = 3, new_desc_blocks = 5\nThe filesystem on \/dev\/mapper\/ubuntu--vg-ubuntu-t-lv is now 8911872 (4k) blocks long.\n\nroot@bitwarden ~# df -h \/<\/strong>\nFilesystem                         Size  Used Avail Use% Mounted on\n\/dev\/mapper\/ubuntu--vg-ubuntu--lv   34G   17G   16G  52% \/\nroot@bitwarden ~#<\/code><\/pre>\n\n\n\n
And now we can enjoy larger disk.<\/p>\n\n\n\n
Ending Notes<\/h2>\n\n\n\n
I have truncated some command outputs for example lsblk displays docker containers and tmpfs but I have removed them.<\/p>\n\n\n\n
2.1.2025: Needed this again, decided to put here since search it here first, after realizing it in my nextcloud. Rewrote some bits and made better flow<\/em>.<\/p>\n\n\n\n
Sources<\/h3>\n\n\n\n
Help from https:\/\/linuxhandbook.com\/resize-lvm-partition\/<\/u><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Or I wished… Step 0: Safety Third: First I backed up VM. I can be a bit monkey brain so critical step. Step 1: Changes in the file system: VM off and added 10gb to the disk After booting VM we can verify that the disk has become bigger Step 2: We delete everything 2.1.2025: […]<\/p>\n","protected":false},"author":1,"featured_media":406,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[20,18,17,21,12,13,19],"class_list":["post-399","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-disk-resize","tag-fs-resize","tag-lvm","tag-lvm-resize","tag-proxmox","tag-pve","tag-ubuntu"],"_links":{"self":[{"href":"https:\/\/pauli.work\/index.php?rest_route=\/wp\/v2\/posts\/399","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pauli.work\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pauli.work\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pauli.work\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pauli.work\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=399"}],"version-history":[{"count":6,"href":"https:\/\/pauli.work\/index.php?rest_route=\/wp\/v2\/posts\/399\/revisions"}],"predecessor-version":[{"id":408,"href":"https:\/\/pauli.work\/index.php?rest_route=\/wp\/v2\/posts\/399\/revisions\/408"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pauli.work\/index.php?rest_route=\/wp\/v2\/media\/406"}],"wp:attachment":[{"href":"https:\/\/pauli.work\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=399"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pauli.work\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=399"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pauli.work\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=399"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}