Hi, I recently ran into a problem while trying to back up some of my btrfs subvolumes over the network: `btrfs send` works flawlessly on snapshots of most subvolumes, but keeps failing on snapshots of a certain subvolume — always after sending 15 GiB:
btrfs send /btrfs/snapshots/home/2015-11-17_03:28:14_BOOT-AUTOSNAPSHOT | pv | ssh kappa "btrfs receive /mnt/300gb/backups/snapshots/zeta/home/" At subvol /btrfs/snapshots/home/2015-11-17_03:28:14_BOOT-AUTOSNAPSHOT At subvol 2015-11-17_03:28:14_BOOT-AUTOSNAPSHOT ERROR: send ioctl failed with -2: No such file or directory 15GB 0:34:34 [7,41MB/s] I've tried piping the output to /dev/null instead of ssh and got the same error (again after sending 15 GiB), so this seems to be on the sending side. However, btrfs scrub reports no errors and I don't get any messages in dmesg when the btrfs send fails. What could cause this kind of error? And is there a way to fix it, preferably without recreating the FS? Regards, Nils Steinger
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