Growing a Ceph RBD volume and an XFS filesystem contained within

ceph-grow-rbd-xfs

# df -h /dev/rbd0
Filesystem                 Size  Used Avail Use% Mounted on
/dev/rbd0                  1.5T  1.5T  557M 100% /mnt/media

# rbd info media/media01
rbd image 'media01':
	size 1536 GB in 393216 objects
	order 22 (4096 kB objects)
	block_name_prefix: rb.0.1098.74b0dc51
	format: 1



# rbd resize media/media01 --size 4194304

# rbd info media/media01
rbd image 'media01':
	size 4096 GB in 1048576 objects
	order 22 (4096 kB objects)
	block_name_prefix: rb.0.1098.74b0dc51
	format: 1



# umount -l /mnt/media01
# rbd unmap /dev/rbd0
# rbd map media/media01
# mount -o nouuid /dev/rbd/media/media01 /mnt/media

# xfs_growfs /mnt/media -d
meta-data=/dev/rbd3              isize=256    agcount=33, agsize=12581888 blks
         =                       sectsz=512   attr=2
data     =                       bsize=4096   blocks=402653184, imaxpct=5
         =                       sunit=1024   swidth=1024 blks
naming   =version 2              bsize=4096   ascii-ci=0
log      =internal               bsize=4096   blocks=196608, version=2
         =                       sectsz=512   sunit=8 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 402653184 to 1073741824

# df -h /dev/rbd0
Filesystem                 Size  Used Avail Use% Mounted on
/dev/rbd3                  4.0T  1.5T  2.6T  38% /mnt/media



# umount /mnt/media
# xfs_admin -U generate /dev/rbd3
Clearing log and setting UUID
writing all SBs
new UUID = 3c2275d5-2527-49c8-8adc-3fee074e51d1

# mount /mnt/media