topic Re: mount cdrom issues hpux 11i in Operating System - HP-UX

mount cdrom issues hpux 11i

Patrick Wirth — Fri, 28 Sep 2001 17:51:13 GMT

Hi. I've noticed something odd and wondered why this was so.

when I mount a cdrom,
mount -o cdcase /dev/dsk/c0t0d0 /mnt/cdrom

it mounts fine except that the uid and gid
are values like...
dr-xr-xr-x 1 4294967295 4294967295 directory1
dr-xr-xr-x 1 4294967295 4294967295 directory2

is there a way to force the uid and gid of a
mounted cd?

also, I am getting file name too long errors when I try to copy from the cd to a directory on the system.

Re: mount cdrom issues hpux 11i

Edward Alfert_2 — Fri, 28 Sep 2001 18:10:53 GMT

could it be that you don't have nobody user and nogroup group?

add
nogroup:*:-2
to /etc/group
and
nobody:*:-1:-2:Guest Account:/:
to /etc/passwd

Re: mount cdrom issues hpux 11i

Patrick Wirth — Fri, 28 Sep 2001 18:18:50 GMT

actually the nobody user does exist.
just a bit differently.

nobody:*:-2:-2::/:

Re: mount cdrom issues hpux 11i

Edward Alfert_2 — Fri, 28 Sep 2001 18:41:56 GMT

could the cd be in a RockRidge format?
try:
mount -F cdfs -o ro,cdcase /dev/dsk/c#t#d# /cdrom

Re: mount cdrom issues hpux 11i

Edward Alfert_2 — Fri, 28 Sep 2001 19:05:11 GMT

here is another way of mounting the file system using pfs_mountd
http://forums.itrc.hp.com/cm/QuestionAnswer/1,1150,0x4c6437f45ef7d4118fef0090279cd0f9,00.html

also about the uid and gid numbers...

you can always change the uid and gid for nobody and nogroup to whatever you want as long as that value isn't being used.

just edit in /etc/group and /etc/passwd the third section from -2 to say 200 or 300 or whatever number.

Re: mount cdrom issues hpux 11i

Patrick Wirth — Fri, 28 Sep 2001 19:05:55 GMT

mount -F cdfs -o ro,cdcase /dev/dsk/c#t#d# /mnt/cdrom

According to the man pages 'cdfs' and 'ro' are the default behaviors for mounting a cdrom. I tried it and the effect is the same as I had before.

However, part of my copying difficulties have been solved. I triend not using the -o cdcase flag. Because the case of the filenames on the CD was mixed, this was causing copy problems..

ie.
cp /mnt/cdrom/filename

would fail. Without the cdcase flag, the
command becomes
cp /mnt/cdrom/Filename

which works. Simply using
mount /dev/dsk/c#t#d# /mnt/cdrom

was good enough to allow me to copy 95% of the CD to disk. Some of the documentation has silly filenames such as
/html/thisistheWonderfulnameChosenforthisFile.htm

which would not be copied directly or though a tar pipe.

Re: mount cdrom issues hpux 11i

Patrick Wirth — Fri, 28 Sep 2001 19:19:30 GMT

Solved. Both uid, and gid and long filename problems have dissapeared.

Though using the pfs_mountd seems like using an elephant gun to squash an ant.

I'll readup on pfs_mount syntax and add it to my unix bag of tricks.

Thanks lots.

Re: mount cdrom issues hpux 11i

Patrick Wallek — Fri, 28 Sep 2001 19:23:42 GMT

Be careful using pfs to mount cd's. When you unmount make sure you use pfs_umount. If you just use umount you can cause yourself problems that you have to reboot to fix.

There are several threads in the Forums that talk (complain) about the pfs daemons. You can search for them if you are interested.

Re: mount cdrom issues hpux 11i

Uday_S_Ankolekar — Fri, 28 Sep 2001 19:27:00 GMT

Hi,

Try first nohup for pfsd and pfs_mountd
/usr/sbin/pfs_mount -t rrip -x unix /dev/dsk/ /cdrom <-- to be mounted

for other CD format

mount -F cdfs -r -o cdcase /dev/dsk /cdrom

Hope this helps

Goodluck

USA--

Re: mount cdrom issues hpux 11i

Patrick Wirth — Fri, 28 Sep 2001 19:33:51 GMT

just out of curiosity.

what is the correct way to nuke these 2 daemons now that I'm done with them?

man pages give no hints but indicate I shouldn't mess with the additional
pfsd.rpc
pfs_mountd.rpc

Re: mount cdrom issues hpux 11i

James R. Ferguson — Sun, 30 Sep 2001 00:21:09 GMT

Hi Patrick:

When you are done with a 'pfs_mount' session and want to terminate its daemons, do a 'pfs_umount' first, then if that is successful, kill (sigterm (15)) the daemons in the *reverse* order you started them. Do not use 'kill -9' unless you absolutely have to do so; i.e. in the event that a 'kill -15' doesn't.

Failure to follow these rules will result in very nasty effects, like continuously climbing CPU utilization; 'bdf' commands that do not respond; etc. Ultimately, you will be forced to reboot.

BTW, a good discussion of 'pfs_mount' can be found in Technical Knowledge Base document #KBAN00000252.

Regards!

...JRF...