###ceph的rbd是能夠進行調節大小的,可是調節須要進行一些操做,不然你看不到調節以後的效果,等於沒調節,由於rbd就至關一塊硬盤,可是文件系統一經初始化,分派的總容量大小、塊大小 inode數量就定了,再去調節,勢必要對sb分區進行從新才能夠。 ###固然調節的方法要看具體的文件系統才能判斷使用相應的工具node
# rbd create --size 10000 test # rbd map test # mkfs.ext4 -q /dev/rbd1 # mount /dev/rbd1 /mnt # df -h /mnt Filesystem Size Used Avail Use% Mounted on /dev/rbd1 9.5G 22M 9.0G 1% /mnt # blockdev --getsize64 /dev/rbd1 10485760000 # rbd resize --size 20000 test Resizing image: 100% complete...done. # blockdev --getsize64 /dev/rbd1 20971520000 # resize2fs /dev/rbd1 resize2fs 1.42 (29-Nov-2011) Filesystem at /dev/rbd1 is mounted on /mnt; on-line resizing required old_desc_blocks = 1, new_desc_blocks = 2 The filesystem on /dev/rbd1 is now 5120000 blocks long. # df -h /mnt Filesystem Size Used Avail Use% Mounted on /dev/rbd1 20G 27M 19G 1% /mnt
$ qemu-img info -f rbd "rbd:rbd/myrbd" $ qemu-img resize -f rbd "rbd:rbd/myrbd" 600G $ virsh domblklist myVM $ virsh blockresize --domain myVM --path vdb --size 600G $ rbd info rbd/myrb $ xfs_growfs /mnt/rbd/myrbd
遇到的問題dom