Hi Peter, I tried. I either get "Done, had to relocate 0 out of 33 chunks" or "ERROR: error during balancing '/': No space left on device", and nothing changes.
2016-06-01 22:29 GMT+02:00 Peter Becker <floyd....@gmail.com>: > try this: > > btrfs fi balance start -musage=0 / > btrfs fi balance start -dusage=0 / > > btrfs fi balance start -musage=1 / > btrfs fi balance start -dusage=1 / > > btrfs fi balance start -musage=5 / > btrfs fi balance start -musage=10 / > btrfs fi balance start -musage=20 / > > > btrfs fi balance start -dusage=5 / > btrfs fi balance start -dusage=10 / > btrfs fi balance start -dusage=20 / > .... > > 2016-06-01 20:30 GMT+02:00 MegaBrutal <megabru...@gmail.com>: >> Hi all, >> >> I have a 20 GB file system and df says I have about 2,6 GB free space, >> yet I can't do anything on the file system because I get "No space >> left on device" errors. I read that balance may help to remedy the >> situation, but it actually doesn't. >> >> >> Some data about the FS: >> >> >> root@ReThinkCentre:~# df -h / >> Fájlrendszer Méret Fogl. Szab. Fo.% Csatol. pont >> /dev/mapper/centrevg-rootlv 20G 18G 2,6G 88% / >> >> root@ReThinkCentre:~# btrfs fi show / >> Label: 'RootFS' uuid: 3f002b8d-8a1f-41df-ad05-e3c91d7603fb >> Total devices 1 FS bytes used 15.42GiB >> devid 1 size 20.00GiB used 20.00GiB path >> /dev/mapper/centrevg-rootlv >> >> root@ReThinkCentre:~# btrfs fi df / >> Data, single: total=16.69GiB, used=14.14GiB >> System, DUP: total=32.00MiB, used=16.00KiB >> Metadata, DUP: total=1.62GiB, used=1.28GiB >> GlobalReserve, single: total=352.00MiB, used=0.00B >> >> root@ReThinkCentre:~# btrfs version >> btrfs-progs v4.4 >> >> >> This happens when I try to balance: >> >> root@ReThinkCentre:~# btrfs fi balance start -dusage=66 / >> Done, had to relocate 0 out of 33 chunks >> root@ReThinkCentre:~# btrfs fi balance start -dusage=67 / >> ERROR: error during balancing '/': No space left on device >> There may be more info in syslog - try dmesg | tail >> >> >> "dmesg | tail" does not show anything related to this. >> >> It is important to note that the file system currently has 32 >> snapshots of / at the moment, and snapshots taking up all the free >> space is a plausible explanation. Maybe deleting some of the oldest >> snapshots or just increasing the file system would help the situation. >> However, I'm still interested, if the file system is full, why does df >> show there is free space, and how could I show the situation without >> having the mentioned options? I actually have an alert set up which >> triggers when the FS usage reaches 90%, so then I know I have to >> delete some old snapshots. It worked so far, I cleaned the snapshots >> at 90%, FS usage fell back, everyone was happy. But now the alert >> didn't even trigger because the FS is at 88% usage, so it shouldn't be >> full yet. >> >> >> Best regards and kecske, >> MegaBrutal >> -- >> 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
