Hi Laurent, Thanks for the solution ! On 30/07/2013 12:07, Laurent Barbe wrote: > Live resize has been added in 3.6.10 for krbd client. > > There is a need to do revalidate_disk() on rbd resize : > https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=d98df63ea7e87d5df4dce0cece0210e2a777ac00 > > Cheers > > Laurent > > > Le 30/07/2013 11:57, Loic Dachary a écrit : >> >> >> On 30/07/2013 11:55, Laurent Barbe wrote: >>> Hello Loic, >>> >>> which version of kernel do you use for krbd ? >> >> Linux i-csnces-0000 3.2.0-41-generic #66-Ubuntu SMP >> >> That may explain a few things ... :-) >> >>> >>> Laurent >>> >>> >>> Le 29/07/2013 23:50, Loic Dachary a écrit : >>>> Hi, >>>> >>>> This works: >>>> >>>> lvcreate --name tmp --size 10G all >>>> Logical volume "tmp" created >>>> mkfs.ext4 /dev/all/tmp >>>> mount /dev/all/tmp /mnt >>>> blockdev --getsize64 /dev/all/tmp >>>> 10737418240 >>>> lvextend -L+1G /dev/all/tmp >>>> Extending logical volume tmp to 11,00 GiB >>>> Logical volume tmp successfully resized >>>> blockdev --getsize64 /dev/all/tmp >>>> 11811160064 >>>> resize2fs /dev/all/tmp >>>> resize2fs 1.41.12 (17-May-2010) >>>> Filesystem at /dev/all/tmp is mounted on /mnt; on-line resizing required >>>> old desc_blocks = 1, new_desc_blocks = 1 >>>> Performing an on-line resize of /dev/all/tmp to 2883584 (4k) blocks. >>>> The filesystem on /dev/all/tmp is now 2883584 blocks long. >>>> >>>> This does not work: >>>> >>>> rbd create --size 10240 tmp >>>> rbd info tmp >>>> rbd image 'tmp': >>>> size 10240 MB in 2560 objects >>>> order 22 (4096 KB objects) >>>> block_name_prefix: rb.0.12dd.238e1f29 >>>> format: 1 >>>> rbd map tmp >>>> mkfs.ext4 /dev/rbd1 >>>> mount /dev/rbd1 /mnt >>>> blockdev --getsize64 /dev/rbd1 >>>> 10737418240 >>>> rbd resize --size 20000 tmp >>>> blockdev --getsize64 /dev/rbd1 >>>> 10737418240 >>>> resize2fs /dev/rbd1 >>>> resize2fs 1.42 (29-Nov-2011) >>>> The filesystem is already 2621440 blocks long. Nothing to do! >>>> >>>> It does work after umounting: >>>> >>>> umount /mnt >>>> blockdev --getsize64 /dev/rbd1 >>>> fsck -f /dev/rbd1 >>>> resize2fs /dev/rbd1 >>>> resize2fs 1.42 (29-Nov-2011) >>>> Resizing the filesystem on /dev/rbd1 to 5120000 (4k) blocks. >>>> The filesystem on /dev/rbd1 is now 5120000 blocks long. >>>> >>>> I assume there should be "something" in KRBD to allow for the same behavior as with LVM but I don't know enough about the kernel to be more specific. Maybe something similar to ioctl BLKRRPART ? >>>> >>>> Cheers >>>> >>> -- >>> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in >>> the body of a message to majordomo@xxxxxxxxxxxxxxx >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >> -- Loïc Dachary, Artisan Logiciel Libre All that is necessary for the triumph of evil is that good people do nothing.
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