here's output of df -kh
filesystem size used avail use% mounted on /dev/mapper/centos-root 50g 34g 17g 67% / devtmpfs 2.5g 0 2.5g 0% /dev tmpfs 2.5g 140k 2.5g 1% /dev/shm tmpfs 2.5g 8.9m 2.5g 1% /run tmpfs 2.5g 0 2.5g 0% /sys/fs/cgroup /dev/sda1 497m 133m 365m 27% /boot i'd increase size of / 194 gb.
i ran command lvextend -l +194g /dev/mapper/centos-root got message filesystem has been resized. rebooted system. i'm expecting see / 244gb. isn't
volume group details
[root@localhost mapper]# vgdisplay --- volume group --- vg name centos 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 2 max pv 0 cur pv 1 act pv 1 vg size 249.51 gib pe size 4.00 mib total pe 63874 alloc pe / size 63648 / 248.62 gib free pe / size 226 / 904.00 mib vg uuid iczpdf-z0co-5qml-gbtr-xisu-6ptl-cpg3dz logical volume details
[root@localhost mapper]# lvdisplay --- logical volume --- lv path /dev/centos/swap lv name swap vg name centos lv uuid mzofjc-7i6w-xcm9-xwrt-ns86-ldyt-oylton lv write access read/write lv creation host, time localhost, 2015-07-02 09:04:52 +1200 lv status available # open 2 lv size 4.62 gib current le 1184 segments 1 allocation inherit read ahead sectors auto - set 8192 block device 253:1 --- logical volume --- lv path /dev/centos/root lv name root vg name centos lv uuid 1j50kj-hcbc-t5ry-y6lv-0xei-zvid-qbfgql lv write access read/write lv creation host, time localhost, 2015-07-02 09:04:53 +1200 lv status available # open 1 lv size 244.00 gib current le 62464 segments 2 allocation inherit read ahead sectors auto - set 8192 block device 253:0 /etc/fstab output # # /etc/fstab # created anaconda on thu jul 2 09:04:53 2015 # # accessible filesystems, reference, maintained under '/dev/disk' # see man pages fstab(5), findfs(8), mount(8) and/or blkid(8) more info # /dev/mapper/centos-root / xfs defaults 0 0 uuid=c4f605aa-56b0-4bde-ae0b-ddf6f0e4a983 /boot xfs defaults 0 0 #/dev/mapper/centos-home /home xfs defaults 0 0 /dev/mapper/centos-swap swap swap defaults 0 0 how extend /dev/mapper/centos-root? help?
instead of "lvextend -l +194g /dev/mapper/centos-root", use "lvextend -l +194g -r /dev/mapper/centos-root". -r option changes logical volume , associated file system sizes in 1 step. in addition, works ext4 , xfs. also, don't use "df", use "lsblk", display clearer.
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