Re: devices
Gavin:
I attempted to send this to you directly, but as you can see, your
personal address is not liked by my ISP:
|------------------------- Failed addresses follow: ---------------------|
gavin.m.seddon@man.ac.uk ... transport smtp: 550 host is listed in rbl-plus.mail-abuse.ja.net
|------------------------- Message text follows: ------------------------|
On Wed, Jan 07, 2004 at 06:42:33PM +0000, Dr Gavin Seddon wrote:
> Dean,
> The original thread was my cdrw and scsi tape are not detected by the
> system, someone advised to try mounting the tape. I installed the mt-st
> kernel patch, added the necessary append to my lilo.conf and added the
> adaptec cdrw patch. No joy.
> Gav.
If the SCSI tape isn't detected, then I presume that the kernel doesn't
recognize it as a device (visible as device 9 on my system when I "cat
/proc/devices"):
Character devices:
1 mem
2 pty
3 ttyp
4 ttyS
5 cua
7 vcs
9 st <- the tape drive
10 misc
14 sound
162 raw
226 drm
Block devices:
3 ide0
I haven't used the "mt-st" patch since I can't remember when (a long
time ago). The kernel supports many SCSI devices, including tape "out
of the box" providing you configure it. Rebuild your unpatched kernel
sources and enable SCSI and SCSI tape. My configuration (which is bound
to be slightly different from yours, but may still be useful as a
reference) for SCSI follows:
#
# SCSI support
#
CONFIG_SCSI=y
CONFIG_BLK_DEV_SD=y
CONFIG_SD_EXTRA_DEVS=40
CONFIG_CHR_DEV_ST=m <- the SCSI tape
CONFIG_BLK_DEV_SR=m <- the SCSI CDROM
CONFIG_SR_EXTRA_DEVS=2
CONFIG_CHR_DEV_SG=m
CONFIG_SCSI_DEBUG_QUEUES=y
CONFIG_SCSI_CONSTANTS=y
#
# SCSI low-level drivers (I have TEKRAM card - see below)
#
CONFIG_SCSI_SYM53C8XX=y
CONFIG_SCSI_NCR53C8XX_DEFAULT_TAGS=4
CONFIG_SCSI_NCR53C8XX_MAX_TAGS=32
CONFIG_SCSI_NCR53C8XX_SYNC=20
At boot, the following SCSI messages appear:
sym53c8xx: at PCI bus 0, device 13, function 0
sym53c8xx: setting PCI_COMMAND_PARITY...(fix-up)
sym53c8xx: 53c875 detected with Tekram NVRAM
sym53c875-0: rev 0x26 on pci bus 0 device 13 function 0 irq 9
sym53c875-0: Tekram format NVRAM, ID 7, Fast-20, Parity Checking
scsi0 : sym53c8xx-1.7.3c-20010512
Vendor: SONY Model: CD-ROM CDU-76S Rev: 1.1c
Type: CD-ROM ANSI SCSI revision: 02
Vendor: HP Model: HP35480A Rev: 1109
Type: Sequential-Access ANSI SCSI revision: 02
I appreciate that your configuration is probably different, but you may
find the above useful. Be sure to start with clean kernel sources (make
mrproper the unpatched sources) and do a "make menuconfig" or whatever
you choose to ensure proper SCSI support is built in.
Regards,
Dean
> On Wed, 2004-01-07 at 17:19, Dean Allen Provins wrote:
> > Gavin:
> >
> > On Wed, Jan 07, 2004 at 12:32:20PM +0000, Dr Gavin Seddon wrote:
> > > On Tue, 2004-01-06 at 18:21, Wayne Topa wrote:
> > > > Dr Gavin Seddon(gavin.m.seddon@man.ac.uk) is reported to have said:
> > > > > Hi,
> > > > > Ihave 2 devices that I cannot get working.
> > > >
> > > > "Can not get working" is very vague. You must be getting some error
> > > > message which would assist someone in helping you.
> > > >
> > > > >
> > > > > a. A scsi tape drive. Here I have installed the mt-st kernel patch and
> > > > > made a ln -s between /dev/sto anmount: /dev/st0 is not a block devicev/tape.
> > > > ^ Typo? do you mean st0?
> > > > What error message do you get when you try to mount it?
> > >
> > > When I try to mount it
> > >
> > > mount: /dev/st0 is not a block device
> >
> > Mounting a tape is somewhat unusual. I recollect seeing that done on
> > UNIVAC mainframes, but not on UNIX or Linux. I use the drive (with tape
> > loaded) by writing to or reading from it. For example;
> >
> > (echo "Date: `date`, tape 1"; dd of=/dev/nst0 count=1)
> >
> > should write a single line to the tape in the drive. Note that I
> > didn't rewind the tape. To read what was written:
> >
> > mt -f /dev/st0 rewind
> > dd if=/dev/st0 count=1
> >
> > should dump the contents of the first (and only) record on the tape (and
> > rewind the tape).
> >
> > It is unclear why you are trying to mount the tape drive, as I've lost the
> > beginning of this thread, but I presume that you have some data on your
> > tape that you want to save on a CD. Try placing the tape data into a file
> > on disc (set up as an ISOFS filesystem, I believe) and recording from
> > it.
> >
> > > > > b. A cdrw, here I have installed the scsi emulation patch and added an
> > > > > append line to my lilo.conf.
> > > >
> > > > Nowhere near enough info here to say.
> > > >
> > > > What does the append line look like?
> > > > Did you add the drive to /etc/fstab?
> > > > does cdrecord find it?
> > > > etc, etc.
> > > > The line is
> > > append="hdc=ide-scsi"
> > >
> > >
> > > No i did not add anything to fstab. Don't know what to add.
> >
> > I do not have a CD writer, but the CD reader is listed in "/etc/fstab"
> > as:
> >
> > # <file system> <mount point> <type> <options> <dump> <pass>
> > /dev/cdrom /cdrom iso9660 ro,user,noauto
> >
> > The drive happens to be a SCSI device and "/dev/cdrom" is soft linked
> > to "/dev/sr0". "/cdrom" (the mount point) is a directory at the root of
> > the file system (readable and executable by all). For my case, when a
> > CD is loaded and mounted, it is done so "read-only", and can be done by
> > a user, but is not done automatically by a general mount command.
> >
> > Hope this is useful.
> >
> > Regards,
> >
> > Dean
> >
> > > cdrecord -scanbus finds nothing.
> > > Yes sto was a typo should be st0
> > >
> > >
> > > > >
> > > > > I suspect the 2 probs may be linked. Can someone help pls?
> > > > Not without much more info.
> > > >
> > > > --
> > > > Hardware, n.:
> > > > The parts of a computer system that can be kicked.
> > > > _______________________________________________________
> > > --
> > > Dr Gavin Seddon <gavin.m.seddon@man.ac.uk>
> > > University of Manchester
> > >
> > >
> > > --
> > > To UNSUBSCRIBE, email to debian-user-request@lists.debian.org
> > > with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
> > >
> >
> > --
> > Dean Provins
> > 50.950333,-114.037916
> > provinsd@telusplanet.net
> > KeyID at at pgpkeys.mit.edu:11371: 0x9643AE65
> --
> Dr Gavin Seddon <gavin.m.seddon@man.ac.uk>
> University of Manchester
>
--
Dean Provins
50.950333,-114.037916
provinsd@telusplanet.net
KeyID at at pgpkeys.mit.edu:11371: 0x9643AE65
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--
Dean Provins
50.950333,-114.037916
provinsd@telusplanet.net
KeyID at at pgpkeys.mit.edu:11371: 0x9643AE65
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