Error. Freezing during copying via sftp

[evgenekov]

If you start copying from the gphotofs mounted directory (/ mnt / foto) via sftp (WinSCP), then the process will be frozen. Here is the log:

gphotofs -d /mnt/foto/
FUSE library version: 2.9.7
nullpath_ok: 0
nopath: 0
utime_omit_ok: 0
unique: 1, opcode: INIT (26), nodeid: 0, insize: 56, pid: 0
INIT: 7.23
flags=0x0003fffb
max_readahead=0x00020000
   INIT: 7.19
   flags=0x00000010
   max_readahead=0x00020000
   max_write=0x00020000
   max_background=0
   congestion_threshold=0
   unique: 1, success, outsize: 40
unique: 2, opcode: LOOKUP (1), nodeid: 1, insize: 55, pid: 8211
LOOKUP /store_00010001
getattr /store_00010001
   NODEID: 2
   unique: 2, success, outsize: 144
unique: 3, opcode: LOOKUP (1), nodeid: 2, insize: 45, pid: 8211
LOOKUP /store_00010001/DCIM
getattr /store_00010001/DCIM
   NODEID: 3
   unique: 3, success, outsize: 144
unique: 4, opcode: LOOKUP (1), nodeid: 3, insize: 49, pid: 8211
LOOKUP /store_00010001/DCIM/141D800E
getattr /store_00010001/DCIM/141D800E
   NODEID: 4
   unique: 4, success, outsize: 144
unique: 5, opcode: LOOKUP (1), nodeid: 4, insize: 53, pid: 8211
LOOKUP /store_00010001/DCIM/141D800E/DSC_7052.JPG
getattr /store_00010001/DCIM/141D800E/DSC_7052.JPG
   NODEID: 5
   unique: 5, success, outsize: 144
unique: 6, opcode: OPEN (14), nodeid: 5, insize: 48, pid: 8211
open flags: 0x8000 /store_00010001/DCIM/141D800E/DSC_7052.JPG
   open[0] flags: 0x8000 /store_00010001/DCIM/141D800E/DSC_7052.JPG
   unique: 6, success, outsize: 32
unique: 7, opcode: READ (15), nodeid: 5, insize: 80, pid: 8211
read[0] 65536 bytes from 0 flags: 0x8000
   read[0] 65536 bytes from 0
   unique: 7, success, outsize: 65552
unique: 8, opcode: READ (15), nodeid: 5, insize: 80, pid: 8211
read[0] 131072 bytes from 65536 flags: 0x8000
   read[0] 131072 bytes from 65536
   unique: 8, success, outsize: 131088
unique: 9, opcode: READ (15), nodeid: 5, insize: 80, pid: 8211
read[0] 131072 bytes from 196608 flags: 0x8000
   read[0] 131072 bytes from 196608
   unique: 9, success, outsize: 131088
unique: 10, opcode: READ (15), nodeid: 5, insize: 80, pid: 8211
read[0] 131072 bytes from 327680 flags: 0x8000
   read[0] 131072 bytes from 327680
   unique: 10, success, outsize: 131088
...
unique: 150, opcode: READ (15), nodeid: 5, insize: 80, pid: 8211
read[0] 131072 bytes from 18677760 flags: 0x8000
   read[0] 131072 bytes from 18677760
   unique: 150, success, outsize: 131088
unique: 151, opcode: READ (15), nodeid: 5, insize: 80, pid: 8211
read[0] 131072 bytes from 18808832 flags: 0x8000
   read[0] 131072 bytes from 18808832
   unique: 151, success, outsize: 131088
unique: 152, opcode: READ (15), nodeid: 5, insize: 80, pid: 8211
read[0] 65536 bytes from 18939904 flags: 0x8000
   read[0] 62600 bytes from 18939904
   unique: 152, success, outsize: 62616
unique: 153, opcode: GETATTR (3), nodeid: 5, insize: 56, pid: 8211
getattr /store_00010001/DCIM/141D800E/DSC_7052.JPG
   unique: 153, success, outsize: 120
unique: 154, opcode: READ (15), nodeid: 5, insize: 80, pid: 8211
read[0] 4096 bytes from 19021824 flags: 0x8000

<here lock>

   read[0] 0 bytes from 19021824
   unique: 154, success, outsize: 16
unique: 155, opcode: FLUSH (25), nodeid: 5, insize: 64, pid: 8211
flush[0]

But the file was not copied to the end!

lsusb:

Bus 002 Device 007: ID 04b0:042e Nikon Corp.

If to copy with cp, it works.