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-   Slackware (https://www.linuxquestions.org/questions/slackware-14/)
-   -   problem with devices with 2.6.10 kernel (https://www.linuxquestions.org/questions/slackware-14/problem-with-devices-with-2-6-10-kernel-298769/)

Mr_C 03-07-2005 12:34 PM
problem with devices with 2.6.10 kernel
 
I've installed my own kernel 2.6.10 on slack10.1 (pat didn't include my sound card in the generic kernel)

Here's my problem when I try to mount a cdrom

Code:
Could not mount device.
The reported error was:
mount: wrong fs type, bad option, bad superblock on /dev/cdrom,
missing codepage or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
Code:
┌─(clay@SOL:pts/1)─────────────────────────────────────────────────────────────────(~)─┐
└─(1:%)─ ls -l /dev/cdrom
lrwxrwxrwx  1 root root 3 2005-03-07 09:39 /dev/cdrom -> hdc
however if I do the following as root it works with
Code:
root@SOL:~# mount -t 9660 /dev/cdrom/ /mnt/cdrom
mount: unknown filesystem type '9660'
root@SOL:~# modprobe isofs
root@SOL:~# mount -t auto /dev/cdrom /mnt/cdrom
mount: block device /dev/cdrom is write-protected, mounting read-only
root@SOL:~#
(with regards to the modprobe I put cdrom support as a module but didn't enable, but thats no real problem).

here's my fstab

Code:
root@SOL:~# cat /etc/fstab
/dev/hda2        swap            swap        defaults        0  0
/dev/hda1        /                reiserfs    defaults        1  1
/dev/hda3        /mnt/XP          ntfs        ro              1  0
/dev/hda4        /mnt/Data        vfat        defaults,users,umask=0,rw    0  0
/dev/cdrom      /mnt/cdrom      iso9660    noauto,ro,umask=0,users  0  0
/dev/fd0        /mnt/floppy      auto        noauto,owner    0  0
devpts          /dev/pts        devpts      gid=5,mode=620  0  0
proc            /proc            proc        defaults        0  0
/dev/sda1        /mnt/sda1        auto        defaults,user,quiet,umask=0,noauto,rw 0 0
/dev/sdb1        /mnt/sdb1        auto        defaults,user,quiet,umask=0,noauto,rw 0 0
root@SOL:~#
here's my mounts

Code:
root@SOL:~# cat /proc/mounts
rootfs / rootfs rw 0 0
/dev/root / reiserfs rw 0 0
proc /proc proc rw,nodiratime 0 0
sysfs /sys sysfs rw 0 0
none /dev ramfs rw 0 0
/dev/hda3 /mnt/XP ntfs ro,noatime,nodiratime,uid=0,gid=0,fmask=0177,dmask=077,nls=utf8,errors=continue,mft_zone_multiplier=1 0 0
/dev/hda4 /mnt/Data vfat rw,nodiratime,nosuid,nodev,noexec,fmask=0000,dmask=0000 0 0
devpts /dev/pts devpts rw 0 0
usbfs /proc/bus/usb usbfs rw 0 0
/dev/cdrom /mnt/cdrom iso9660 ro 0 0
root@SOL:~#
so why can't I mount my cdrom as a normal user???? --> can't burn cds now of course
Oh and if I pass scsi emulation 'hdc=ide-scsi' to my grub line, hdc dissappears!


also my usb devices sda** have dissappeared

Its a notebook with dvd/cdrw drive


help anyone?!
whats really going on here?

MMYoung 03-07-2005 01:48 PM
Re: problem with devices with 2.6.10 kernel
 
Quote:
Originally posted by Mr_C
here's my fstab

root@SOL:~# cat /etc/fstab
/dev/hda2 swap swap defaults 0 0
/dev/hda1 / reiserfs defaults 1 1
/dev/hda3 /mnt/XP ntfs ro 1 0
/dev/hda4 /mnt/Data vfat defaults,users,umask=0,rw 0 0
/dev/cdrom /mnt/cdrom iso9660 noauto,ro,umask=0,users 0 0
/dev/fd0 /mnt/floppy auto noauto,owner 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
proc /proc proc defaults 0 0
/dev/sda1 /mnt/sda1 auto defaults,user,quiet,umask=0,noauto,rw 0 0
/dev/sdb1 /mnt/sdb1 auto defaults,user,quiet,umask=0,noauto,rw 0 0
root@SOL:~#
Change the umask=0 to umask=000. You might also want to also change defaults for /mnt/Data to noauto. This way you can mount/unmount when you want, just a suggestion. BTW, I wouldn't even use the umask for a cdrom, but that's a personal preference. Remove it and you should be able to mount/unmount the cdrom as whomever is logged on at the time. Matter of fact your fstab looks a bit "complicated" to me, as an example here's mine:

/dev/hdb5 swap swap defaults 0 0
/dev/hdb1 / reiserfs defaults 1 1
/dev/hdb6 /boot ext3 defaults 1 2
/dev/hdb7 /var reiserfs defaults 1 2
/dev/hdb8 /home reiserfs defaults 1 2
/dev/hda5 /share vfat noauto,users,rw 1 0
/dev/cdrom /mnt/cdrom iso9660 noauto,users,ro 0 0
/dev/dvd /mnt/dvd iso9660 noauto,users,ro 0 0
/dev/zip /mnt/zip vfat noauto,users,rw 0 0
/dev/jump64 /mnt/jump64 vfat noauto,users,rw 0 0
/dev/jump128 /mnt/jump128 vfat noauto,users,rw 0 0
/dev/usbhd1 /mnt/stuff vfat noauto,users,rw 1 0
/dev/fd0 /mnt/floppy vfat noauto,users,rw 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
proc /proc proc defaults 0 0
none /sys sysfs defaults 0 0

Everything works JUST like I want it to. You might also want to "clean up" your sda* mounts. The way they are set only the user that mounts them can unmount them, and with defaults that might only be root (I'm not sure on that one).
Quote:
Originally posted by Mr_C
Oh and if I pass scsi emulation 'hdc=ide-scsi' to my grub line, hdc dissappears! also my usb devices sda** have dissappeared
While you can use ide-scsi with a 2.6 kernel, the question begs to be asked, "Why?". While the ATAPI driver in the kernel may not be perfect for CD burning right now, it's better than scsi emulation, IMHO. I've been using it since I my first 2.6 compile (2.6.5) and it's worked, barring the 2.6.8 - 2.6.9 thing, like a champ. I'm now using 2.6.11 with no problems. You might also want to look at your kernel config and check out the SCSI and USB section to make sure of your settings. The one thing you DON'T want to use in the USB section is UB, look for this in the USB section:
Quote:
Low Performance USB Block driver

CONFIG_BLK_DEV_UB:

This driver supports certain USB attached storage devices such as flash keys.

Warning: Enabling this cripples the usb-storage driver.

If unsure, say N.
HTH,
MMYoung

Mr_C 03-07-2005 01:57 PM
change to umask=000 makes no difference.
Still can't mount cdrom, not even root can 'mount /mnt/cdrom'

MMYoung 03-07-2005 02:15 PM
Quote:
Originally posted by Mr_C
change to umask=000 makes no difference.
Still can't mount cdrom, not even root can 'mount /mnt/cdrom'
Looking at your fstab, /mnt/cdrom is "pointing" to /dev/cdrom, which should be a symlink in /dev that points to the actual device node. So there are a couple of things you might want to check.

1.) Make sure you actually have /dev/cdrom.
2.) If you do check to see what it points to by:
Code:
ls -l /dev/cdrom
Also, could you post the output of lsmod?

Thanks,
MMYoung

keefaz 03-07-2005 02:24 PM
Only root can set the type of fs and choose devices when mounting, eg

mount -t iso9660 /dev/cdrom /mnt/cdrom <-- only root can do this
mount /dev/cdrom /mnt/cdrom <-- only root can do this

mount /mnt/cdrom <-- ok for users from your /etc/fstab settings

Working fstab line should be:
Code:
/dev/cdrom      /mnt/cdrom      iso9660    noauto,ro,users  0  0

Mr_C 03-07-2005 04:19 PM
Ya I know that only root can interact with /dev.


Code:
┌─(clay@SOL:pts/1)─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────(~)─┐
└─(%)─ cat /etc/fstab | grep cdrom
/dev/cdrom      /mnt/cdrom      iso9660    noauto,ro,umask=000,users  0  0
┌─(clay@SOL:pts/1)─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────(~)─┐
└─(%)─ ls -l /dev/cdrom
lrwxrwxrwx  1 root root 3 2005-03-07 13:40 /dev/cdrom -> hdc
actually by removing the umask option, eveything has returned to normal (hmm I didn't have to recomiple my kernel again....) -- keefaz :cool:
K3b refused to see the cdrom, so I deleted my user settings and lauched it again and it found my burner.

Also discovered that usb drives are now called uba.


Thanks for the help.
You're right simple is good. --mmyoung :cool:

MMYoung 03-07-2005 05:50 PM
Quote:
Originally posted by Mr_C
Also discovered that usb drives are now called uba.
That means you are using the CONFIG_BLOCK_DEV_UB and your usb-storage is "crippled". You should disable that and recompile your kernel. I mistakenly said it was in the USB section, when actually it's in the Block Devices section. See above post.
Quote:
Originally posted by Mr_C
Thanks for the help.
You're right simple is good. --mmyoung :cool:
You're welcome. The simpler the better I always say.

Glad I could help,
MMYoung

Mr_C 03-07-2005 08:51 PM
Uba. Is this bad? I mean I plugged in a usb external harddrive and it was recognized. What do you mean it cripples usb-storage?

MMYoung 03-07-2005 09:18 PM
Quote:
Originally posted by Mr_C
Uba. Is this bad? I mean I plugged in a usb external harddrive and it was recognized. What do you mean it cripples usb-storage?
The "quote" that I have in post number 2 of this thread is a quote from the CONFIG_BLOCK_DEV_UB help file. Matter of fact it states, "If unsure say NO" in the help file.

UB is a "low performance" USB block driver and not really suitable for the "high performance" USB external HD's. I've not read much about UB, but all that I've read about was bad. Well, bad is such a "bad" word, I shoud say all that I've read about UB is "not good". You might want to check out the help file for UB and see what you think. I did find this, usb-storage and the ub device and 2.6.9 may want to give it a read.
Quote:
from the article
So, it is better for certain things and worse for others. In 2.6.10
there are much larger warnings to Distros not to enable it, as it's not
ready yet. The problem is that if you compile your kernel with
CONFIG_BLK_DEV_UB then the devices it believes it can handle (a subset
of the usb-storage devices), then usb-storage will *not* bind to those
devices even if the ub driver is not loaded. Note though that you can
have one device bound to ub and another to usb-storage on the same
machine without problems as long as ub doesn't believe it should have
that 2nd device.
Thus the warning about "crippling" usb-storage.

HTH,
MMYoung

Mr_C 03-07-2005 09:33 PM
ok thanks again for the heads up.

Mr_C 03-22-2005 04:20 PM
actually its compiled as a module..........
and thus not active, but avaliable, so.....????

saxophobe 04-06-2005 07:45 AM
Same problem, but no umask...
 
Hi all!

I am having the same problem as described in this thread, but I don't have a umask set in my /etc/fstab:

Code:
/dev/hda2        swap            swap        defaults        0  0
/dev/hda1        /                reiserfs    defaults        1  1
/dev/cdrom      /mnt/cdrom      iso9660    noauto,owner,ro  0  0
/dev/fd0        /mnt/floppy      auto        noauto,owner    0  0
devpts          /dev/pts        devpts      gid=5,mode=620  0  0
proc            /proc            proc        defaults
Also, here are my mounts:

Code:
rootfs / rootfs rw 0 0
/dev/root / reiserfs rw 0 0
proc /proc proc rw,nodiratime 0 0
sysfs /sys sysfs rw 0 0
none /dev ramfs rw 0 0
devpts /dev/pts devpts rw 0 0
usbfs /proc/bus/usb usbfs rw 0 0
When I try to mount the cdrom drive, I get the following error:

Quote:
mount: wrong fs type, bad option, bad superblock on /dev/cdrom,
missing codepage or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
And when I run dmesg | tail, I get the following:

Code:
hdc: command error: status=0x51 { DriveReady SeekComplete Error }
hdc: command error: error=0x50 { LastFailedSense=0x05 }
ide: failed opcode was: unknown
end_request: I/O error, dev hdc, sector 64
isofs_fill_super: bread failed, dev=hdc, iso_blknum=16, block=16
hdc: command error: status=0x51 { DriveReady SeekComplete Error }
hdc: command error: error=0x50 { LastFailedSense=0x05 }
ide: failed opcode was: unknown
end_request: I/O error, dev hdc, sector 64
isofs_fill_super: bread failed, dev=hdc, iso_blknum=16, block=16
The maker of my distro believes that this may be a kernel bug in isofs. Does anyone here have any ideas about this issue?

Thanks in advance for your time!

sax

Mr_C 04-06-2005 10:08 PM
fixed

saxophobe 04-07-2005 03:26 PM
Would you mind sharing how this got fixed, Mr_C?!?!?

mdarby 04-07-2005 03:39 PM
And what did you do to your .bashrc to make you prompt look like
Code:
┌─(clay@SOL:pts/1)─────────────────────────────────────────────────────────────────(~)─┐
└─(1:%)─ ls -l /dev/cdrom
lrwxrwxrwx  1 root root 3 2005-03-07 09:39 /dev/cdrom -> hdc
???


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