not running but no error at all

[patatetom]

hi,

strange : I've just configured, compiled and installed fuse-ext2 without any error*, and when I run it, nothing happens ! no message, no error and especially no assembly !

the debug option (-d / -o debug) doesn't work either...

a track to see where it might come from ?

(* just some warnings about pjdfstest.c)

[patatetom]

hi,

some precisions :

• "nothing happens" (the subject of the issue) when used with unprivilegied user : fuse-ext2 must be used with root account
• release 0.0.9 returns this error :

# fuse-ext2
fuse-ext2 0.0.9 29 - FUSE EXT2FS Driver
...
# fuse-ext2 /dev/dm-1 /media/cdrom/ -o ro
# LANG=C ls /media/cdrom/
ls: cannot open directory '/media/cdrom/': No such file or directory
# ls -ld /media/cdrom/
drwxrwxrwx 7 root root 16384  2 août  22:07 /media/cdrom/

• release 0.0.8 (in GitHub, but 0.0.7 see below) seems ok :

# fuse-ext2
fuse-ext2 0.0.7 29 - FUSE EXT2FS Driver
...
# fuse-ext2 /dev/dm-1 /media/cdrom/ -o ro
# LANG=C ll /media/cdrom/
total 96
-rw------- 1 root   root    8192 Jul 28 13:50 aquota.group
-rw------- 1 root   root    8192 Jul 28 13:50 aquota.user
drwxr-xr-x 6     98 power  16384 Jan  6  2017 home
drwx------ 2 root   root   16384 Aug 31  2014 lost+found
drwxrwxrwt 2 nobody nobody 16384 Sep  8  2014 media

ps : I'm trying to recover files on a disk coming from a netgear readynas duo (eg. raid1 / lvm / ext3 bs=16k)

[alperakcan]

Hi,

If it does not contain information that you can not share, can you please share the device image. You can get it with dd or similar.

You can give a try to latest master source code, too.

Cheers.

[patatetom]

hi,

unfortunately no, the disc weighs 2Tb and contains personal informations :-( I'm working on it since last night (with version 0.0.8) and everything seems ok...

sorry.

[zealotous]

Hi, @alperakcan I have same issue with the latest fuseext2. It is unable mount partitions created by ubuntu 16.10. fuseext2 from Ubuntu 16.04 fails with error

$ sudo fuseext2 /dev/mapper/loop13p1 tmp_mnt
fuse-umfuse-ext2: version:'0.4', fuse_version:'29' [main (fuse-ext2.c:331)]
fuse-umfuse-ext2: enter [do_probe (do_probe.c:30)]
fuse-umfuse-ext2: Error while trying to open /dev/mapper/loop13p1 (rc=2133571396) [do_probe (do_probe.c:34)]
fuse-umfuse-ext2: Probe failed [main (fuse-ext2.c:347)]
$ fuseext2 /dev/mapper/loop13p1 tmp_mnt 
fuse-umfuse-ext2: version:'0.4', fuse_version:'29' [main (fuse-ext2.c:331)]
fuse-umfuse-ext2: enter [do_probe (do_probe.c:30)]
fuse-umfuse-ext2: Error while trying to open /dev/mapper/loop13p1 (rc=2133571396) [do_probe (do_probe.c:34)]
fuse-umfuse-ext2: Probe failed [main (fuse-ext2.c:347)]

recent versions (master, v0.0.9) fail with no errors.

Here is the bzipped test raw disk image https://drive.google.com/open?id=0B9cynxxQzKCaWUIyVmNrUmpYMEE

ext4fuse https://github.com/gerard/ext4fuse mounts this image successfully

There are no issues with ext2, ext3 partitions.

[alperakcan]

hello @zealotous

you are trying to mount a medium image, not a disk partition image. even system mount command will fail if you try to mount disk2.raw. you should give an offset, or better you can grab the partition from disk image. i demonstrated howto mount your image with both mount and fuse-ext2 below:

system tools

$ sudo mount -o loop disk2.raw tmp mount: wrong fs type, bad option, bad superblock on /dev/loop0, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so.

$ sudo fdisk -l disk2.raw Disk disk2.raw: 100 MiB, 104857600 bytes, 204800 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x8efdad49

Device Boot Start End Sectors Size Id Type disk2.raw1 2048 204799 202752 99M 83 Linux

$ sudo mount -o loop,offset=$((2048 * 512)) disk2.raw tmp $ tree tmp tmp ├── hello_ubuntu_16.10_ext4.txt └── lost+found [error opening dir]

1 directory, 1 file $ sudo umount tmp

$ dd if=disk2.raw of=disk2.raw1 bs=512 skip=2048 count=202752 202752+0 records in 202752+0 records out 103809024 bytes (104 MB, 99 MiB) copied, 0.281762 s, 368 MB/s

$ sudo mount disk2.raw1 tmp $ tree tmp tmp ├── hello_ubuntu_16.10_ext4.txt └── lost+found [error opening dir]

1 directory, 1 file $ sudo umount tmp

fuse-ext2

$ sudo ./fuse-ext2/fuse-ext2 disk2.raw tmp fuse-ext2: version:'0.0.9', fuse_version:'27 / 29 / 29' [main (fuse-ext2.c:327)] Mounting /home/distch/Downloads/disk2.raw Read-Only. Use 'force' or 'rw+' options to enable Read-Write mode fuse-ext2: opts.device: /home/distch/Downloads/disk2.raw [main (fuse-ext2.c:342)] fuse-ext2: opts.mnt_point: /home/distch/Downloads/tmp/ [main (fuse-ext2.c:343)] fuse-ext2: opts.volname: [main (fuse-ext2.c:344)] fuse-ext2: opts.options: (null) [main (fuse-ext2.c:345)] fuse-ext2: parsed_options: allow_other,default_permissions,ro,fsname=/home/distch/Downloads/disk2.raw [main (fuse-ext2.c:346)] fuse-ext2: enter [do_probe (do_probe.c:30)] fuse-ext2: Error while trying to open /home/distch/Downloads/disk2.raw (rc=2133571347) [do_probe (do_probe.c:34)] fuse-ext2: Probe failed [main (fuse-ext2.c:355)]

$ sudo ./fuse-ext2/fuse-ext2 disk2.raw1 tmp fuse-ext2: version:'0.0.9', fuse_version:'27 / 29 / 29' [main (fuse-ext2.c:327)] Mounting /home/distch/Downloads/disk2.raw1 Read-Only. Use 'force' or 'rw+' options to enable Read-Write mode fuse-ext2: opts.device: /home/distch/Downloads/disk2.raw1 [main (fuse-ext2.c:342)] fuse-ext2: opts.mnt_point: /home/distch/Downloads/tmp/ [main (fuse-ext2.c:343)] fuse-ext2: opts.volname: [main (fuse-ext2.c:344)] fuse-ext2: opts.options: (null) [main (fuse-ext2.c:345)] fuse-ext2: parsed_options: allow_other,default_permissions,ro,fsname=/home/distch/Downloads/disk2.raw1 [main (fuse-ext2.c:346)] fuse-ext2: enter [do_probe (do_probe.c:30)] fuse-ext2: leave [do_probe (do_probe.c:55)] fuse-ext2: mounting read-only [main (fuse-ext2.c:374)]

$ tree /home/distch/Downloads/tmp/ /home/distch/Downloads/tmp/ ├── hello_ubuntu_16.10_ext4.txt └── lost+found [error opening dir] $ sudo umount tmp

cheers, alper.

[zealotous]

@alperakcan, thank you for your answer. I've mounted image with kpartx -a -v disk2.raw.

There is my demonstration how it fails without kpartx.

$ dd if=disk2.raw of=disk2.raw1 bs=512 skip=2048 count=202752
202752+0 records in
202752+0 records out
103809024 bytes (104 MB, 99 MiB) copied, 2.15007 s, 48.3 MB/s
$ sudo mount -o loop -t ext4 disk2.raw1 mnt
$ tree mnt
mnt
├── hello_ubuntu_16.10_ext4.txt
└── lost+found [error opening dir]

1 directory, 1 file
$ sudo umount mnt

$ ./f/fuse-ext2-0.0.9/fuse-ext2/fuse-ext2 disk2.raw1 mnt
fuse-ext2: version:'0.0.9', fuse_version:'27 / 29 / 29' [main (fuse-ext2.c:327)]
fuse-ext2: enter [do_probe (do_probe.c:30)]
fuse-ext2: Error while trying to open ~/tmp/disk2.raw1 (rc=2133571396) [do_probe (do_probe.c:34)]
fuse-ext2: Probe failed [main (fuse-ext2.c:343)]
$ tree mnt
mnt

0 directories, 0 files
$ sudo umount mnt                                            
umount: mnt: not mounted

$ ext4fuse disk2.raw1 mnt
$ tree mnt
mnt
├── hello_ubuntu_16.10_ext4.txt
└── lost+found

1 directory, 1 file
$ sudo umount mnt

Here are versions of packages for Ubuntu 16.04. I see the same problem in Debian 7.7.

$ uname -a
Linux mfe 4.4.0-89-generic #112-Ubuntu SMP Mon Jul 31 19:38:41 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
$ pkg-config --modversion ext2fs   
1.42.13
$ pkg-config --modversion fuse         
2.9.4