[X2Go-Dev] Bug#398: Automounter only mounts first partition of USB media (at least in certain cases)
Stefan Baur
newsgroups.mail2 at stefanbaur.de
Fri Jan 10 14:23:34 CET 2014
package: x2gousbmount
severity: normal
version: 1.1.0.2-0x2go2~git20131217.483+wheezy.heuler.1
Hi, I have a USB device with several partitions.
It's being detected by the automounter and shows up under /media like so:
ls -lah /media/USB2.0_Mobile_Disk/
total 16K
drwxr-xr-x 5 root root 100 Jan 10 12:16 .
drwxr-xr-x 4 root root 80 Jan 10 12:16 ..
drwxr-xr-x 2 root root 40 Jan 10 12:16 sdb
drwxr-xr-x 4 x2gothinclient root 16K Jan 1 1970 sdb1
drwxr-xr-x 2 root root 40 Jan 10 12:16 sdb2
As you can already see from the ownership tag, only sdb1 is actually
mounted.
file -s /dev/sdb1:
/dev/sdb1: sticky x86 boot sector, mkdosfs boot message display, code
offset 0x3c, OEM-ID " mkdosfs", sectors/cluster 16, root entries 512,
Media descriptor 0xf8, sectors/FAT 208, heads 17, sectors 802816
(volumes > 32 MB) , serial number 0x90e07535, label: " ", FAT
(16 bit)
I have to admit that the content of sdb2 is a bit unusual - it's an
ISO9660 filesystem like the one you usually find on a CD.
file -s /dev/sdb2:
/dev/sdb2: sticky # ISO 9660 CD-ROM filesystem data 'Debian wheezy
20131213-23:56 '
Still, it's perfectly possible to mount it manually:
mount /dev/sdb2 /media/USB2.0_Mobile_Disk/sdb2:
mount: block device /dev/sdb2 is write-protected, mounting read-only
mount
[...]
/dev/sdb1 on /media/USB2.0_Mobile_Disk/sdb1 type vfat
(ro,relatime,sync,uid=104,fmask=0022,dmask=0022,codepage=cp437,iocharset=utf8,shortname=mixed,uni_xlate,errors=remount-ro)
/dev/sdb2 on /media/USB2.0_Mobile_Disk/sdb2 type iso9660 (ro,relatime)
So this should be supported by the automounter as well.
Note: I haven't tried what happens when you insert USB media with
several "regulary formatted" (FAT, ext_, ...) partitions, so I don't
know if the automounter is limited to mounting the first partition in
general, or if it is simply confused by the fact that this particular
USB medium contains an ISO9660-formatted partition.
-Stefan
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