On Mon, Mar 09, 2009 at 10:31:41AM +0000, Hugo Mills wrote: > After an online resize, the filesystem reports its new size, but > still runs out of space at the old size: [...] > Unmounting and remounting the filesystem seems to make the new > space available for use again. > > This is the second time I've had this happen to me now, so it seems > to be more-or-less reproducible, although I haven't deliberately tried > to trigger the behaviour yet. Just to confirm, I can indeed reproduce it trivially: $ sudo lvcreate scratch -n testresize -L 5G $ sudo mkfs.btrfs /dev/scratch/testresize $ sudo mount /dev/scratch/testresize /mnt $ sudo chmod ug+w /mnt $ sudo chown hrm. /mnt $ cd /mnt $ dd if=/dev/zero of=foo.txt bs=1M count=4096 $ sudo lvextend scratch/testresize -L 9G $ sudo btrfsctl -r 9G /mnt $ dd if=/dev/zero of=foo2.txt bs=1M count=4096 and I get an out-of-space error within a few hundred blocks. $ cd .. $ sudo umount /mnt $ sudo mount /dev/scratch/testresize /mnt $ cd /mnt $ dd if=/dev/zero of=foo2.txt bs=1M count=4096 and then I can write the full 4G of data. Hugo. -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- There are three mistaiks in this sentance. ---
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