Errno 30 : Read-Only filesystem

[Vryali]

Solved: fsck.vfat -a /dev/sdb1 resolved
I've been a-googling with little luck, so I figured I'd post here. No matter what I seem to do I can't get Calibre to get past the read-only error.

1) Calibre does mount the device as I believe it should, using umask 077 and suchlike... No dice even though it does mount to the proper location with said umask.

2) I ran fsck.vfat just in case there were errors on the FS (Saw a post saying that would fix it), no dice.

3) I've tried removing the calibre-mount-helper so that it can't mount things and then mounting the device myself, I get the same error even when mounted as below:

/dev/sdb1 on /media/Kindle Main Memory type vfat (rw,noexec,nosuid,nodev,umask=000,uid=1000,gid=100 ,user=vry)

With the above I can manually move files to the device, but I get the same error from Calibre everytime.

Kinda at my wits end :'(

[Errno 30] Read-only file system: u'/media/Kindle Main Memory/metadata.calibre'

Traceback (most recent call last):
  File "/usr/lib/calibre/calibre/gui2/device.py", line 69, in run
    self.result = self.func(*self.args, **self.kwargs)
  File "/usr/lib/calibre/calibre/gui2/device.py", line 311, in _books
    mainlist = self.device.books(oncard=None, end_session=False)
  File "/usr/lib/calibre/calibre/devices/kindle/driver.py", line 177, in books
    bl = USBMS.books(self, oncard=oncard, end_session=end_session)
  File "/usr/lib/calibre/calibre/devices/usbms/driver.py", line 164, in books
    self.sync_booklists((bl, None, None))
  File "/usr/lib/calibre/calibre/devices/usbms/driver.py", line 305, in sync_booklists
    write_prefix(self._main_prefix, 0)
  File "/usr/lib/calibre/calibre/devices/usbms/driver.py", line 303, in write_prefix
    with open(self.normalize_path(os.path.join(prefix, self.METADATA_CACHE)), 'wb') as f:
IOError: [Errno 30] Read-only file system: u'/media/Kindle Main Memory/metadata.calibre'

Linux aria 2.6.35-ARCH #1 SMP PREEMPT Sat Oct 30 21:22:26 CEST 2010 x86_64 Intel(R) Core(TM)2 Duo CPU T7300 @ 2.00GHz GenuineIntel GNU/Linux

local/calibre 0.7.27-1

Thanks in advance, I'd love to get this working

[kovidgoyal]

Can you manually create files in /media/Kindle Main Memory

[Vryali]

Originally Posted by kovidgoyal

Can you manually create files in /media/Kindle Main Memory

Using both calibre-mount-helper and a manual mount command fail with a read-only FS. Basically I can mount it manually, read/write as expected with a umask=000, but when I open Calibre, with or without calibre-mount-helper, the FS goes to ro?

Text blob of the commands/output below:

$ cat /etc/fstab | grep Kindle
/dev/sdb1	/media/Kindle\040Main\040Memory	vfat	auto,user,rw,umask=000,noexec,uid=1000,gid=100 0 0

$ mount /dev/sdb1

$ calibre &
[1] 9885

...

QGtkStyle was unable to detect the current GTK+ theme.
Failed to read MOBI cover
Failed to read MOBI cover
Failed to read MOBI cover
Failed to read MOBI cover
Failed to read MOBI cover
Failed to read MOBI cover
[Errno 30] Read-only file system: u'/media/Kindle Main Memory/metadata.calibre'

Traceback (most recent call last):
  File "/usr/lib/calibre/calibre/gui2/device.py", line 69, in run
    self.result = self.func(*self.args, **self.kwargs)
  File "/usr/lib/calibre/calibre/gui2/device.py", line 311, in _books
    mainlist = self.device.books(oncard=None, end_session=False)
  File "/usr/lib/calibre/calibre/devices/kindle/driver.py", line 177, in books
    bl = USBMS.books(self, oncard=oncard, end_session=end_session)
  File "/usr/lib/calibre/calibre/devices/usbms/driver.py", line 164, in books
    self.sync_booklists((bl, None, None))
  File "/usr/lib/calibre/calibre/devices/usbms/driver.py", line 305, in sync_booklists
    write_prefix(self._main_prefix, 0)
  File "/usr/lib/calibre/calibre/devices/usbms/driver.py", line 303, in write_prefix
    with open(self.normalize_path(os.path.join(prefix, self.METADATA_CACHE)), 'wb') as f:
IOError: [Errno 30] Read-only file system: u'/media/Kindle Main Memory/metadata.calibre'

$ cd /

$ umount /dev/sdb1

$ sudo fsck.vfat /dev/sdb1
dosfsck 3.0.10, 12 Sep 2010, FAT32, LFN
/documents/Sanderson, Brandon/Alcatraz versus the Evil Librarians (Alcatraz 1) - Sanderson, Brandon.mobi
  Contains a free cluster (9088). Assuming EOF.
/documents/Sanderson, Brandon/Alcatraz versus the Evil Librarians (Alcatraz 1) - Sanderson, Brandon.mobi
  File size is 363737 bytes, cluster chain length is 319488 bytes.
  Truncating file to 319488 bytes.
Leaving file system unchanged.
/dev/sdb1: 77 files, 5667/405900 clusters

$ mount /dev/sdb1

$ cd /media/Kindle\ Main\ Memory/

$ touch test

$ ls
audible  documents  music  system  test

$ ls
audible  documents  music  system  test

$ calibre &
[2] 10124

$ QGtkStyle was unable to detect the current GTK+ theme.
Failed to read MOBI cover
Failed to read MOBI cover
Failed to read MOBI cover
Failed to read MOBI cover
Failed to read MOBI cover
Failed to read MOBI cover
[Errno 30] Read-only file system: u'/media/Kindle Main Memory/metadata.calibre'

Traceback (most recent call last):
  File "/usr/lib/calibre/calibre/gui2/device.py", line 69, in run
    self.result = self.func(*self.args, **self.kwargs)
  File "/usr/lib/calibre/calibre/gui2/device.py", line 311, in _books
    mainlist = self.device.books(oncard=None, end_session=False)
  File "/usr/lib/calibre/calibre/devices/kindle/driver.py", line 177, in books
    bl = USBMS.books(self, oncard=oncard, end_session=end_session)
  File "/usr/lib/calibre/calibre/devices/usbms/driver.py", line 164, in books
    self.sync_booklists((bl, None, None))
  File "/usr/lib/calibre/calibre/devices/usbms/driver.py", line 305, in sync_booklists
    write_prefix(self._main_prefix, 0)
  File "/usr/lib/calibre/calibre/devices/usbms/driver.py", line 303, in write_prefix
    with open(self.normalize_path(os.path.join(prefix, self.METADATA_CACHE)), 'wb') as f:
IOError: [Errno 30] Read-only file system: u'/media/Kindle Main Memory/metadata.calibre'

$ touch test2
touch: cannot touch `test2': Read-only file system

$ mount | grep Kindle
/dev/sdb1 on /media/Kindle Main Memory type vfat (rw,noexec,nosuid,nodev,umask=000,uid=1000,gid=100,user=vry)

I have it mounted, I can RW to it, I open calibre, and the FS goes back into ro mode?

Thanks, by the by, for your prompt response, I appreciate your help =)

Edit: I then umount and remount it and it's rw again, until I open calibre, and then the FS goes back to ro.

[kovidgoyal]

That means you have errors on your filesystem. Run a fsck on the filesystem (the linux kernel remounts a filesystem ro when errors happen during a filesystem operation).

[Vryali]

Originally Posted by kovidgoyal

That means you have errors on your filesystem. Run a fsck on the filesystem (the linux kernel remounts a filesystem ro when errors happen during a filesystem operation).

I've ran multiple, even one in the wall of copy/paste I included above. Everytime Calibre tries to do something, it gets an error? I can manually copy files to my heart's content, but as soon as calibre starts, poof?

/var/log/messages also shows nothing, I've been running fsck.vfat, did you have another recommendation?

Edit: Additionally, my device works fine on my fiancee's netbook, which is running eeebuntu. This problem only exists and persists on my laptop. She is running version 0.6.42 of calibre, at a quick glance over at hers, while mine is running 0.7.27.

Edit 2: Just tested hers again just now as a sanity check, no problems. Went back to mine and same issue :'(

[Vryali]

Just put everything in one post, not seeing how to delete this post for some reason.

[Vryali]

I'm a retard, my sincere apologies and thanks again for your time. It helps if you run the fsck.vfat with the -a flag so it actually fixes things. It's working fine now.