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..., that you can get the correct oops and bug info. I lost another 3 hours with many reboots and a recovery drive to recover my root drive. Question #1: I have hourly snapshots of my root filesystem, and I wasn''t able to mount any of them. I got the BUG at fs/btrfs/volumes.c:3707 each time. gandalfthegreat:~# mount -o ro,recovery /dev/mapper/root -o ''subvol=root_daily_20130108_00:01:02,defaults,compress=lzo,discard,nossd,space_cache,noatime'' If my log is damaged, why are all other snapshots also broken? Question #2: This btrfs-zero-log business, which in the end fixed my problem,...

...] BUG: Bad rss-counter state mm:ffff8801e2a4c080 idx:2 val:1 kernel: [119720.558186] btrfs: unlinked 12 orphans Please let me know if you need other info and how bad this ''BUG'' is (i.e. do I need to go back from backup?). Also, can I tell which partition/btrfs pool was affected? gandalfthegreat:~# btrfs fi show Label: ''btrfs_pool2'' uuid: 2d17a045-aaa2-414f-9ef4-de671ae06fae Total devices 1 FS bytes used 219.75GB devid 1 size 872.51GB used 410.04GB path /dev/dm-1 Label: ''btrfs_pool1'' uuid: 873d526c-e911-4234-af1b-239889cd143d Total devices 1 FS...

Glück Auf! I know its been discussed more then ones, but as a user I really would like to see the patch for allowing this in the kernel. Some users tested this patch successfully for weeks or months in 2 or 3 kernel versions since then, true? I''d say by creating a snapshot, it''s nothing else in the end. More then one file or tree sharing the same data on disc, or am I wrong?

Is this useful to anyone? Got this after a crash/reboot: if (block_rsv) { WARN_ON(block_rsv->size > 0); <<<<<<<<<<<<<<<<<<<<<< btrfs_free_block_rsv(root, block_rsv); } ------------[ cut here ]------------ WARNING: at fs/btrfs/inode.c:2165 btrfs_orphan_commit_root+0xcb/0xdf() Hardware name: 2429A78 Modules linked in:

...t+0x88/0xc3 [ 316.640191] [<ffffffff8136723d>] ? system_call_fastpath+0x1a/0x1f imklog 5.8.6, log source = /proc/kmsg started. [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Linux version 3.4.4-amd64-preempt-noide-20120410 (root@gandalfthegreat) (gcc version 4.6.3 (Debian 4.6.3-1) ) #1 SMP PREEMPT Sun Jun 24 15:32:40 PDT 2012 [ 0.000000] Command line: BOOT_IMAGE=linux344x64 ro root=/dev/mapper/cryptroot panic=20 resume=/dev/sdb3 usbcore.autosuspend=1 i915.modeset=1 pcie_aspm=force rootflags=subvol=backuproot cryptopts=source=/dev/sdb4,...