On Thu, Jun 02, 2016 at 07:45:49PM +0000, Omari Stephens wrote: > [Note: not on list; please reply-all] > > I've read everything I can find about running out of space on btrfs, and it > hasn't helped. I'm currently dead in the water. > > Everything I do seems to make the problem monotonically worse — I tried > adding a loopback device to the fs, and now I can't remove it. Then I tried > adding a real device (mSATA) to the fs and now I still can't remove the > loopback device (which is making everything super slow), and I also can't > remove the mSATA. I've removed about 100GB from the filesystem and that > hasn't done anything either. > > Is there anything I can to do even figure out how bad things are, what I > need to do to make any kind of forward progress? This is a laptop, so I > don't want to add an external drive only to find out that I can't remove it > without corrupting my filesystem. > > ### FILESYSTEM STATE > 19:23:14> [root{slobol}@/home/xsdg] > #btrfs fi show /home > Label: none uuid: 4776be5b-5058-4248-a1b7-7c213757dfbd > Total devices 3 FS bytes used 221.02GiB > devid 1 size 418.72GiB used 413.72GiB path /dev/sda3 > devid 2 size 10.00GiB used 5.00GiB path /dev/loop0 > devid 3 size 14.91GiB used 3.00GiB path /dev/sdb1 > > > 19:23:33> [root{slobol}@/home/xsdg] > #btrfs fi usage /home > Overall: > Device size: 443.63GiB > Device allocated: 421.72GiB > Device unallocated: 21.91GiB > Device missing: 0.00B > Used: 221.68GiB > Free (estimated): 219.24GiB (min: 208.29GiB) > Data ratio: 1.00 > Metadata ratio: 2.00 > Global reserve: 228.00MiB (used: 36.00KiB) > > Data,single: Size:417.69GiB, Used:220.36GiB > /dev/loop0 5.00GiB > /dev/sda3 409.69GiB > /dev/sdb1 3.00GiB > > Metadata,single: Size:8.00MiB, Used:0.00B > /dev/sda3 8.00MiB > > Metadata,DUP: Size:2.00GiB, Used:674.45MiB > /dev/sda3 4.00GiB > > System,single: Size:4.00MiB, Used:0.00B > /dev/sda3 4.00MiB > > System,DUP: Size:8.00MiB, Used:56.00KiB > /dev/sda3 16.00MiB > > Unallocated: > /dev/loop0 5.00GiB > /dev/sda3 5.00GiB > /dev/sdb1 11.91GiB > > > ### BALANCE FAILS, EVEN WITH -dusage=0 > 19:23:02> [root{slobol}@/home/xsdg] > #btrfs balance start -v -dusage=0 . > Dumping filters: flags 0x1, state 0x0, force is off > DATA (flags 0x2): balancing, usage=0 > ERROR: error during balancing '.': No space left on device > There may be more info in syslog - try dmesg | tail
1. Could you please show us your `uname -r`? 2. http://git.kernel.org/cgit/linux/kernel/git/kdave/btrfs-progs.git/tree/btrfs-debugfs We need to know more information about block group in order to take more fine-grained balance, so there is a tool for developer called 'btrfs-debugfs', you may download it from the above link, it's a python script, as long as you're able to run it, try btrfs-debugfs -b /your_partition. Thanks, -liubo > > > ### CAN'T REMOVE DEVICES -> ENOSPC > #btrfs device remove /dev/loop0 /home > ERROR: error removing device '/dev/loop0': No space left on device > > --xsdg > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html