Resize LVM, LUKS, Ext3<\/strong><\/p>\nThe work done so far has resized the outermost container, the partition. Like Russian nesting dolls, we need to grow each in turn before we can address the filesystem. A testament to the tools, we can actually do all of the following booted into the live system.<\/p>\n
First LVM:<\/p>\n
\r\npvs\r\n PV VG Fmt Attr PSize PFree \r\n \/dev\/sda3 Volume00 lvm2 a-- 148.75g 36.98g\r\n\r\nvgs\r\n VG #PV #LV #SN Attr VSize VFree \r\n Volume00 1 3 0 wz--n- 148.75g 36.98g\r\n\r\nlvs\r\n LV VG Attr LSize Pool Origin Data% Move Log Cpy%Sync Convert\r\n home Volume00 -wn-ao---- 69.00g \r\n root Volume00 -wi-ao---- 40.76g \r\n swap Volume00 -wi-ao---- 2.00g\r\n\r\nlvresize Volume00\/root -l+100%FREE\r\n Extending logical volume root to 77.75 GiB\r\n Logical volume root successfully resized\r\n\r\nlvs\r\n LV VG Attr LSize Pool Origin Data% Move Log Cpy%Sync Convert\r\n home Volume00 -wn-ao---- 69.00g \r\n root Volume00 -wi-ao---- 77.75g \r\n swap Volume00 -wi-ao---- 2.00g\r\n<\/pre>\nNOTE: I would normally expect to first do a pvresize to grow the PV, but the PV already knew about the extra space, likely a gift from GParted.<\/p>\n
Then LUKS:<\/p>\n
\r\ncryptsetup resize luks-cc7e78ee-87a9-4ad0-9c82-31de01389b34 \r\necho $?\r\n0\r\n<\/pre>\nFinally the filesystem:<\/p>\n
\r\ndf -h \/\r\nFilesystem Size Used Avail Use% Mounted on\r\n\/dev\/mapper\/luks-cc7e78ee-87a9-4ad0-9c82-31de01389b34 40G 29G 9.2G 76% \/\r\n\r\nresize2fs \/dev\/mapper\/luks-cc7e78ee-87a9-4ad0-9c82-31de01389b34 \r\nresize2fs 1.42.8 (20-Jun-2013)\r\nFilesystem at \/dev\/mapper\/luks-cc7e78ee-87a9-4ad0-9c82-31de01389b34 is mounted on \/; on-line resizing required\r\nold_desc_blocks = 3, new_desc_blocks = 5\r\nThe filesystem on \/dev\/mapper\/luks-cc7e78ee-87a9-4ad0-9c82-31de01389b34 is now 20380160 blocks long.\r\n\r\ndf -h \/\r\nFilesystem Size Used Avail Use% Mounted on\r\n\/dev\/mapper\/luks-cc7e78ee-87a9-4ad0-9c82-31de01389b34 77G 29G 45G 40% \/\r\n<\/pre>\nWe are left with a nice large root to accommodate our \/home data.<\/p>\n
Home Copy<\/strong><\/p>\nWith 45GB free in our root, we should have plenty of space after cleaning out some garbage in home:<\/p>\n
\r\ndf -h \/home\r\nFilesystem Size Used Avail Use% Mounted on\r\n\/dev\/mapper\/Volume00-home 64G 5.0G 56G 9% \/home\r\n<\/pre>\nA good old rsync will suffice to copy that whopping 5GB of data from the existing home volume to the home within the crypto-root. First things first, bug out to runlevel 3 (or single\/rescue mode for overkill) to ensure home is not in use so we can mount it somewhere else:<\/p>\n
\r\ninit 3\r\numount \/home\r\nmkdir \/oldhome\r\nmount \/dev\/mapper\/Volume00-home \/oldhome\r\n<\/pre>\nFinally rsync the data:<\/p>\n
\r\nrsync -a \/oldhome\/ \/home\r\n<\/pre>\nWhen done, remember to pound out the \/home mount from \/etc\/fstab lest we accidentally mount our old unencrypted home volume on next boot:<\/p>\n
\r\n#\/dev\/Volume00\/home\t\/home\t\t\text3\tdefaults\t1 2\r\n<\/pre>\nA reboot confirms that everything is working as it should.<\/p>\n
LVM Cleanup<\/strong><\/p>\nAlmost half the disk is tied up in our abandoned home. Once happy with the new arrangement, we can easily reclaim that space starting at the LVM layer, and then working our way up. This is just a second run at container resizing as above, LVM, LUKS, Ext3, all live.<\/p>\n
\r\nlvs\r\n LV VG Attr LSize Pool Origin Data% Move Log Cpy%Sync Convert\r\n home Volume00 -wn-a----- 69.00g \r\n root Volume00 -wi-ao---- 77.75g \r\n swap Volume00 -wi-ao---- 2.00g\r\n\r\nlvremove Volume00\/home\r\nDo you really want to remove active logical volume home? [y\/n]: y\r\n Logical volume \"home\" successfully removed\r\n\r\nvgs\r\n VG #PV #LV #SN Attr VSize VFree \r\n Volume00 1 2 0 wz--n- 148.75g 69.00g\r\n\r\nlvextend -L+50G Volume00\/root\r\n Extending logical volume root to 127.75 GiB\r\n Logical volume root successfully resized\r\n\r\ncryptsetup resize luks-cc7e78ee-87a9-4ad0-9c82-31de01389b34 \r\necho $?\r\n0\r\n\r\nresize2fs \/dev\/mapper\/luks-cc7e78ee-87a9-4ad0-9c82-31de01389b34\r\nresize2fs 1.42.8 (20-Jun-2013)\r\nFilesystem at \/dev\/mapper\/luks-cc7e78ee-87a9-4ad0-9c82-31de01389b34 is mounted on \/; on-line resizing required\r\nold_desc_blocks = 5, new_desc_blocks = 8\r\nThe filesystem on \/dev\/mapper\/luks-cc7e78ee-87a9-4ad0-9c82-31de01389b34 is now 33487360 blocks long.\r\n\r\ndf -h \/\r\nFilesystem Size Used Avail Use% Mounted on\r\n\/dev\/mapper\/luks-cc7e78ee-87a9-4ad0-9c82-31de01389b34 126G 36G 85G 30% \/\r\n<\/pre>\nNOTE: With ample disk available, we left some space unallocated in the VG. This is just a hedge for flexibility. If we need more space in the future, we can always add it live just as we did here.<\/p>\n
Partition Re-Numbering<\/strong><\/p>\nOur partition table consists of the following, as revealed by fdisk:<\/p>\n
\r\nDevice Boot Start End Blocks Id System\r\n\/dev\/sda1 * 63 619919 309928+ 83 Linux\r\n\/dev\/sda3 620544 312580095 155979776 8e Linux LVM\r\n<\/pre>\nWhile it is no problem whatsoever to be “missing” a partition in sequence, we continue the intrepid pursuit of the trivial and wish to renumber sda3 to sda2. The easiest way to rectify this is to simply delete and re-create the partition using fdisk. Since it is the last partition, fdisk will normally default to the same start and end sectors when creating the new one (something to double-check). While this can be done live followed by an immediate reboot, it is safest to do this from rescue mode with the disk not in use.<\/p>\n
\r\nfdisk \/dev\/sda\r\nd<\/strong>delete, partition number 3<\/strong>\r\nn<\/strong>ew, p<\/strong>rimary, partition number 2<\/strong>, first sector default<\/strong>, last sector default<\/strong>\r\nt<\/strong>ype, partition number 2<\/strong>, 8e<\/strong>\r\nw<\/strong>rite\r\n<\/pre>\nReboot. Just a reminder, this is completely unnecessary. \ud83d\ude42<\/p>\n
Everything Encrypted<\/strong><\/p>\nWe leave with this on the system disk:<\/p>\n
\r\n\/dev\/sda (150GB)\r\n sda1: ext3 \/boot (300MB)\r\n sda2: lvm Volume00 (150GB)\r\n Volume00-swap: swap (2GB)\r\n Volume00-root: LUKS (127GB)\r\n luks-cc7e78ee-87a9-4ad0-9c82-31de01389b34 ext3 (127GB)\r\n unallocated: (19GB)\r\n<\/pre>\nA tidy partition and volume layout with nearly everything encrypted. In part four<\/a>, we will contend with encrypting swap and explore encryption possibilities more fully.<\/p>\n","protected":false},"excerpt":{"rendered":"GParted is among the most well-known and respected open-source partition editors. From creation to deletion, resizing, copying, and moving, it is a tool built to manage the full gamut of disk partitionining operations. In part one of our migration process, we cloned the installation to a new drive in new hardware. In part two, we […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-650","post","type-post","status-publish","format-standard","hentry","category-technology"],"_links":{"self":[{"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=\/wp\/v2\/posts\/650","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=650"}],"version-history":[{"count":25,"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=\/wp\/v2\/posts\/650\/revisions"}],"predecessor-version":[{"id":708,"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=\/wp\/v2\/posts\/650\/revisions\/708"}],"wp:attachment":[{"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=650"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=650"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=650"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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