#761582 jmtpfs: IO error, mtpfs: takes many minutes to scan, random files missing

Package:
libmtp9
Source:
libmtp
Description:
Media Transfer Protocol (MTP) library
Submitter:
"Eduard Bloch"
Date:
2015-11-04 01:58:04 UTC
Severity:
important
#761582#5
Date:
2014-09-14 18:33:05 UTC
From:
To:
Dear Maintainer,

Tried to download photo files from a Sony Xperia Z1 Compact phone.
Bus 001 Device 021: ID 0fce:51a7 Sony Ericsson Mobile Communications AB

jmtpfs returns immediately. Afterwards, filesystem is not displayed by
df (but mount shows it). Any access attempt reports IO error.

mtpfs hangs for many minutes. After that, the filesystem is mounted...
kind of. The displayed size is wrong. When I browse through the file
system, some directories are simply empty but they obviously have lots
of contents on the phone.

IMHO this is seriously broken WRT both, perceived user experience and
functionality.

Regards,
Eduard.

#761582#10
Date:
2015-04-07 13:34:27 UTC
From:
To:
I've been able to use jmtpfs with Motorola Droid Turbo phone and mount it to see most, but not all files.

I created backup files named Backup_<date>.zip.  Some of them are visible in the mounted system but others do not appear,
although they can be seen in the phone. Newer files created with camera software do appear, however.

It's not clear why some .zip files appear and others do not.

thanks,
--jack

[Already reported a separate bug that this device is unknown to libmtp: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=782080 ]