Am Sat, 25 Oct 2014 21:58:08 +0200 schrieb Marc Joliet <mar...@gmx.de>:
> Am Sat, 25 Oct 2014 14:24:58 +0200 > schrieb Marc Joliet <mar...@gmx.de>: > > > I can still access files on MARCEC_BACKUP just fine, and the snapshots are > > still there ("btrfs subvolume list" succeeds). > > Just an update: that was true for a while, but at one point listing > directories > and accessing the file system in general stopped working (all processes that > touched the FS hung/zombified). This necessitated a hard reboot, since > "reboot" > and "halt" (so... "shutdown", really) didn't do anything other than spit out > the > usual "the system is rebooting" message. > > Interestingly enough, the file system was (apparently) fine after that (just > as > Petr Janecek wrote), other than an invalid space cache file: > > [ 65.477006] BTRFS info (device sdg2): The free space cache file > (2466854731776) is invalid. skip it > > That is, running my backup routine worked just as before, and I can access > files on the FS just fine. > > Oh, and apparently the rebalance continued successfully?! > > [ 342.540865] BTRFS info (device sdg2): continuing balance > [ 342.599991] BTRFS info (device sdg2): relocating block group > 2502355320832 > flags 34 [ 342.821608] BTRFS info (device sdg2): found 4 extents > [ 343.056915] BTRFS info (device sdg2): relocating block group > 2501818449920 > flags 36 [ 437.932405] BTRFS info (device sdg2): found 25086 extents > [ 438.727197] BTRFS info (device sdg2): relocating block group > 2501281579008 > flags 36 [ 557.319354] BTRFS info (device sdg2): found 83875 extents > > # btrfs balance status /media/MARCEC_BACKUP > No balance found on '/media/MARCEC_BACKUP' > > No SEGFAULT anywhere. All I can say right now is "huh". Although I'll try > starting a "balance -m" again tomorrow, because the continued balance only > took about 3-4 minutes (maybe it . Maybe it exploded, I don't know (sorry, clearly I didn't delete the entirety of that incomplete train of thought). Anyway, I did run a full "balance -m" again, and this time it finished successfully. Make of that what you will, but it appears that the bug is non-deterministic (makes me wonder if Petr Janecek or anybody else who hit the bug ever got a balance to finish). HTH -- Marc Joliet -- "People who think they know everything really annoy those of us who know we don't" - Bjarne Stroustrup
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