Re: btrfs-progs send | receive error: no such file or directory

[Austin S Hemmelgarn <ahferroin7@gmail.com>]

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On 2015-11-08 16:28, Glen H wrote:
> Hi,
>
> I really enjoy the features of btrfs but send|receive is failing me so
> my backups are not working.  I'm using "btrbk" to backup my drives
> (all local) and one of the three subvolumes errors out.  When I run
> this command from the terminal it errors out:
>
>> btrfs send /mnt/ssd/_btrbk_snap/@.20151108 | btrfs receive /mnt/backup2tb/
> At subvol /mnt/ssd/_btrbk_snap/@.20151108
> At subvol @.20151108
> ERROR: send ioctl failed with -2: No such file or directory
> ERROR: unexpected EOF in stream.
Have you ever run any kind of data deduplication (bedup, duperemove, or 
something else) on the source filesystem?  I've seen errors like this in 
the past when trying to send from a filesystem that I had run 
deduplication on (and I don't think that the patches to fix it made into 
the version of Mint you're using).

That aside, there are two things that I've found that can fix some (but 
not all) send/receive errors:
1. Run a balance on the filesystem (either a full balance, or use 
filters to select just the block in question).
2. Force the file that it's choking on to be re-written (you can use 
'btrfs receive -vv' to see what files it's processing, although be 
prepared for _a lot_ of output).



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