Hello, situation update: I realized I haven't tried "nospace_cache" yet, even though I tried "clear_cache". "clear cache" doesn't help at all. On the other hand, with "nospace_cache":
# mount /dev/hdb -odevice=/dev/hdc,nospace_cache /mnt/test device label root devid 2 transid 56099 /dev/hdc device label root devid 1 transid 56099 /dev/hdb btrfs: disabling disk space caching btrfs: unlinked 1 orphans / # btrfs: continuing balance btrfs: relocating block group 776713797632 flags 4 It successfully mounts rw and continues the balance. I'm still doing it all on qemu with "-snapshot" option, to keep HD contents unmodified. Now the question is: should I try to mount it "nospace_cache" for real, try to keep using it and see what happens, or is anyone interested in debugging this problem further before I potentially destroy the "evidence"? Regards -- 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
