From mboxrd@z Thu Jan 1 00:00:00 1970 From: Josef Bacik Subject: Re: btrfs error: 'disk full' although 8 of 21 GB free Date: Wed, 7 Apr 2010 11:48:23 -0400 Message-ID: <20100407154823.GA2315@localhost.localdomain> References: <201004071659.03927.markotahal@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-btrfs@vger.kernel.org To: Marek Otahal Return-path: In-Reply-To: <201004071659.03927.markotahal@gmail.com> List-ID: On Wed, Apr 07, 2010 at 04:59:02PM +0200, Marek Otahal wrote: > Hi, > I'm running archlinux, kernel 2.6.33.2, btrfs-progs 0.19. > I was copying a folder (cca 2GB) to a btrfs partition(8GB free) and got a > 'disk full' error message. Had to kill the process and remove the files > otherwise apps report full disk. > I can always reproduce this by creating some big files on the partition. > Since then, btrfsck reports errors, is there a way to fix them? > Thank you, Mark > > // here follows contents of files attached for your comfort > > Here are some clues: > > *output of df -h: > > Filesystem Size Used Avail Use% Mounted on > /dev/sda5 20G 13G 6.0G 68% / > udev 10M 248K 9.8M 3% /dev > none 1.0G 0 1.0G 0% /dev/shm > /dev/mapper/homeDevice > 21G 13G 8.0G 62% /home > tmpfs 3.0G 29M 3.0G 1% /tmp > /dev/sda8 3.4G 2.3G 976M 71% /var > /dev/sda2 145M 20M 118M 15% /boot > /dev/mapper/storeDevice > 40G 38G 2.0G 96% /mnt/store > /dev/sda10 18G 9.1G 7.4G 56% /mnt/recovery > /dev/sda12 9.8G 9.6G 206M 98% /media/disk > /dev/sda1 30G 22G 7.5G 75% /mnt/winxp > > * I've heard df has issues with btrfs, but du -sh /mountpoint reports approx > same size used > > *btrfsck /dev/mapper/homeDevice - is there a way to fix these errors?? I'm > worried to take snapshots or defragment not to make it worse. > Some work has been done in this area recently. Can you run with the latest btrfs-unstable tree? Df will tell you something that is more along the lines with what you are expecting, and you can use the new btrfs-progs-unstable tree and run a btrfs filesystem df /mount/point and it will spit out specific space info that will be helpfull. Thanks, Josef