Unable To Extend Partition

There are several guides on how to extend logical volume space, but nothing showing what to do if your virtual group and logical volume is full.

create partition

fdisk /dev/sda

command (m for help): n
command (m for help): p
First sector (93634560-314572799, default 93634560):
Last sector, +sectors or +size{K,M,G} (93634560-314572799, default 314572799):

Create a physical volume from the partition

lvm pvcreate /dev/sda3

My drive was too full to do the extension, so I deleted some old logs.

Extend vg

vgextend centos_centos7 /dev/sda3

The logical volume was too full, and the +100%FREE was not working

lvextend -An -r -L +10g /dev/centos_centos7/root

Once the LV was extended a bit I could extend the rest of the way

 lvextend /dev/centos_centos7/root -l+100%FREE

Extend XFS

df -h

Filesystem                       Size  Used Avail Use% Mounted on
/dev/mapper/centos_centos7-root   23G   23G   20K 100% /
devtmpfs                         4.8G     0  4.8G   0% /dev
tmpfs                            4.9G  8.0K  4.9G   1% /dev/shm
tmpfs                            4.9G  490M  4.4G  10% /run
tmpfs                            4.9G     0  4.9G   0% /sys/fs/cgroup
/dev/sda1                       1014M  147M  868M  15% /boot
overlay                           23G   23G   20K 100% /var/lib/docker/overlay2/

100% full on overlay.

We need to extend the XFS file system

-n shows the xfs file data, and does not extend.

xfs_growfs -n /var/lib/docker/

meta-data=/dev/mapper/centos_centos7-root isize=512    agcount=8, agsize=798208 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0 spinodes=0
data     =                       bsize=4096   blocks=5814272, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal               bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0

no flag, extends, note the blocks changing.

xfs_growfs /var/lib/docker/

meta-data=/dev/mapper/centos_centos7-root isize=512    agcount=8, agsize=798208 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0 spinodes=0
data     =                       bsize=4096   blocks=5814272, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal               bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 5814272 to 26784768

Check the use % change:

df -h

Filesystem                       Size  Used Avail Use% Mounted on
/dev/mapper/centos_centos7-root  103G   23G   80G  22% /
devtmpfs                         4.8G     0  4.8G   0% /dev
tmpfs                            4.9G  8.0K  4.9G   1% /dev/shm
tmpfs                            4.9G  490M  4.4G  10% /run
tmpfs                            4.9G     0  4.9G   0% /sys/fs/cgroup
/dev/sda1                       1014M  147M  868M  15% /boot
overlay                          103G   23G   80G  22% /var/lib/docker/overlay2/02bc5da772bd1b882950b843d7a235e873b59de343ee30bb2a71df4cb0a51b3b/merged

Gitlab Error

Failed opening the RDB file dump.rdb (in server root dir /var/opt/gitlab/redis) for saving: No space left on device