Re: Regression in Linux 5.5.0-rc[1-5]: btrfs send/receive out of memory

[Craig Andrews <candrews@integralblue.com>]

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On 2020-01-28 10:02, Filipe Manana wrote:
> On Tue, Jan 28, 2020 at 2:46 PM Craig Andrews 
> <candrews@integralblue.com> wrote:
>> 
>> On 2020-01-27 08:44, Filipe Manana wrote:
>> > On Sat, Jan 25, 2020 at 11:18 AM Stéphane Lesimple
>> > <stephane_btrfs2@lesimple.fr> wrote:
>> >>
>> >> > ERROR: failed to clone extents to var/amavis/db/__db.001: Invalid argument
>> >>
>> >> If I may add another data point here, I'm also encountering this issue
>> >> on a 5.5.0-rc6, with the btrfs-rc7 patches applied to it (so as far as
>> >> btrfs is concerned, this is an rc7).
>> >>
>> >> On the first time, it happened after sending ~90 Gb worth of data, and
>> >> aborted (as I didn't specify the -E option to btrfs send). Then, I
>> >> retried with btrfs send -E 0, and it encountered the exact same error
>> >> on the same file.
>> >>
>> >> # btrfs send -v /tank/backups/.snaps/incoming/sendme/ | pv
>> >> 2>/dev/pts/23 | btrfs rec -E 0 /newfs/
>> >> At subvol /tank/backups/.snaps/incoming/sendme/
>> >> At subvol sendme
>> >> ERROR: failed to clone extents to
>> >> retroarch/x86_64/cores/mednafen_saturn_libretro.dll: Invalid argument
>> >> ERROR: failed to clone extents to
>> >> retroarch/x86_64/cores/mednafen_saturn_libretro.dll: Invalid argument
>> >
>> > This is probably the same case for which I sent a fix last week:
>> >
>> > https://patchwork.kernel.org/patch/11350129/
>> >
>> > Thanks.
>> 
>> I applied that patch to 5.5.0-rc7 and that solved the problem. I can 
>> now
>> do backups (which is a send/receive) successfully.
>> 
>> >
>> >>
>> >> The send/receive is still going on for now, currently around the ~200
>> >> Gb mark.
>> >>
>> >> Bees is running on this FS (but I stopped it before doing the
>> >> send/receive).
>> >>
>> >> I can test patches if needed.
>> >>
>> >> --
>> >> Stéphane.
>> 
>> The patch appears to have fixed my problems - thank you!
> 
> Great!
> 
> Can you reply to the patch's thread with a:
> 
> Tested-by: Your Name <email@foo.bar>
> 
> ?
> 
> Or I can reply to it myself with that if you agree.
> 
> Thanks!
> 
>> ~Craig


Can you please send the reply?
Tested-by: Craig Andrews <candrews@integralblue.com>

And again, thank you!
~Craig

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