Can't mount removable devices

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1

Yesterday something happened. I was configuring a HUION tablet, as described here and when i finally was working I realized I could not mount any removable device: usb or CD… the error is the same, with a 14.9 GB pendrive, trying to mount it with dolphin:


 An error occurred while accessing '14,9 GiB Removable Media', the system responded: An unspecified error has occurred: Adding read ACL for uid 1001 to `/run/media/fernando' failed: Invalid argument

The device is detected fine


2016-10-28T08:26:52.092805+02:00 andromeda kernel:   912.104296] scsi 7:0:0:0: Direct-Access     SanDisk  Extreme          0001 PQ: 0 ANSI: 6
2016-10-28T08:26:52.094521+02:00 andromeda kernel:   912.106037] sd 7:0:0:0: Attached scsi generic sg3 type 0
2016-10-28T08:26:52.098427+02:00 andromeda kernel:   912.109989] sd 7:0:0:0: [sdc] 31277232 512-byte logical blocks: (16.0 GB/14.9 GiB)
2016-10-28T08:26:52.100467+02:00 andromeda kernel:   912.112261] sd 7:0:0:0: [sdc] Write Protect is off
2016-10-28T08:26:52.100486+02:00 andromeda kernel:   912.112268] sd 7:0:0:0: [sdc] Mode Sense: 53 00 00 08
2016-10-28T08:26:52.101409+02:00 andromeda kernel:   912.113384] sd 7:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
2016-10-28T08:26:52.108448+02:00 andromeda kernel:   912.119561]  sdc: sdc1
2016-10-28T08:26:52.112450+02:00 andromeda kernel:   912.123613] sd 7:0:0:0: [sdc] Attached SCSI removable disk
2016-10-28T08:28:40.345303+02:00 andromeda su: (to root) fernando on pts/1

I think when rebooting the system while while configuring the tablet it was an automatic kernel update. The directory /run/media is empty and it seems the kernel dos not create /run/media/fernando when I insert the usb

creating manually the directory seems to solve the problem for my personal user, but I guess it should be done automatically by the system.


andromeda:/home/fernando # mkdir /run/media/fernando
andromeda:/home/fernando # ls /run/media -l
total 0
drwxr-xr-x 3 root root 60 Oct 28 08:35 fernando
andromeda:/home/fernando #

May be some rights problem?

regards

2

Did you install the 13.2 Kernel update which was published earlier this week?

  • “openSUSE-2016-256 - Security update for the Linux Kernel” from So 23 Oct 2016 22:03:42 CEST.

Please show us which kernel version you are using:


 > uname -a
Linux eck001 3.16.7-45-desktop #1 SMP PREEMPT Fri Oct 21 12:20:02 UTC 2016 (f3e3fc4) x86_64 x86_64 x86_64 GNU/Linux
 >

If you installed the openSUSE-2016-256 patch then, it is possible that this Bug Report is relevant: <https://bugzilla.opensuse.org/show_bug.cgi?id=1007035>.

3 

fernando@andromeda:~> uname -a
Linux andromeda 3.16.7-45-desktop #1 SMP PREEMPT Fri Oct 21 12:20:02 UTC 2016 (f3e3fc4) x86_64 x86_64 x86_64 GNU/Linux
fernando@andromeda:~>

If you installed the openSUSE-2016-256 patch then, it is possible that this Bug Report is relevant: <1007035 – POSIX ACL support broken by kernel-desktop-3.16.7-45.

I have the system up to date. It’s the same kernel described in bugzilla, so I guess this is the cause. As I have done a temporary solution creating /run/media/fernando, I will wait for the fix in the next patch.

thanks

4

Use the previous kernel via the advanced option in grub boot menu

I believe a fixed kernel is available now so force an update in yast

5

would mean that user fernando has no rights to write in that folder …

6

Well indeed he has not, but booting with a previous kernel


fernando@andromeda:~> uname -a
Linux andromeda 3.16.7-42-desktop #1 SMP PREEMPT Tue Jun 28 12:20:57 UTC 2016 (35ab731) x86_64 x86_64 x86_64 GNU/Linux
fernando@andromeda:~>

/run/media not even exists


andromeda:/home/fernando # ls /run/media            
ls: cannot access /run/media: No such file or directory
andromeda:/home/fernando #

But when I plug in a usb stick, it mounts ok with dolphin and then


andromeda:/home/fernando # ls /run/media -l
total 0
drwxr-x---+ 3 root root 60 Oct 29 00:41 fernando
andromeda:/home/fernando #

And user fernando does not have rights to write in /run/media, but the system has created /run/media/fernando


andromeda:/home/fernando # ls /run -l      
total 48
.............................................
drwxr-xr-x  3 root       root     60 Oct 29 00:41 media
.........................

So definitely is a bug.

I have done a zypper up but I am up to date and the bus is still not fixed
so booting with the old kernel or creating manually /var/run/fernando will fix the problem temporarily

regards

7

It’s created on-demand.
But when I plug in a usb stick, it mounts ok with dolphin and then

andromeda:/home/fernando # ls /run/media -l
total 0
drwxr-x—+ 3 root root 60 Oct 29 00:41 fernando
andromeda:/home/fernando #

Notice the ‘+’?
This means that there are additional ACLs (“access control lists”) applied that contain finer grained permissions on a user/group basis, and in this case give your user (and only that user) write access.
Run “getfacl /run/media/fernando” to see them.

So definitely is a bug.

Yes, the bug is that ACL support in the kernel is broken.

The fix should be in the update repo any minute now though.

8

Meanwhile it is.
So update and the problems should be gone.

9

Kernel updated, problem solved


fernando@andromeda:~> uname -a
Linux andromeda 3.16.7-48-desktop #1 SMP PREEMPT Wed Oct 26 18:09:22 UTC 2016 (8c027f6) x86_64 x86_64 x86_64 GNU/Linux