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- Newsgroups: comp.unix.ultrix
- Path: sparky!uunet!utcsri!newsflash.concordia.ca!alcor.concordia.ca!smw
- From: smw@alcor.concordia.ca ( Steven Winikoff )
- Subject: Re: CD-ROM is really a pseudoterminal??
- Message-ID: <Bxu1FJ.Axx@newsflash.concordia.ca>
- Summary: Still not working
- Sender: usenet@newsflash.concordia.ca (USENET News System)
- Nntp-Posting-Host: alcor.concordia.ca
- Organization: Concordia University, Montreal, Quebec
- References: <5435@daily-planet.concordia.ca> <1992Nov12.135412.18066@prl.dec.com> <BxMCny.DAw@newsflash.concordia.ca> <1e6rbhINNig8@ni.umd.edu>
- Date: Mon, 16 Nov 1992 23:33:18 GMT
- Lines: 114
-
- In article <1e6rbhINNig8@ni.umd.edu>, louie@sayshell.umd.edu (Louis A. Mamakos) writes:
- > In article <BxMCny.DAw@newsflash.concordia.ca> smw@alcor.concordia.ca ( Steven Winikoff ) writes:
- > >I hate to disagree with Boyd Roberts, as he obviously knows what he's
- > >talking about (as demonstrated in many other posts to this group,
- > >among others).
- >
- > And you shouldn't...
-
- Yes, I understand that now.
-
- I apologize to Boyd, and generally to DEC for my initial doubts about this
- issue.
-
- (Of course, I still think that since there are fewer than 255 different
- types of devices, there's no *need* to reuse major numbers yet... and
- I still think that doing so is confusing. Nevertheless, it's not *wrong*,
- and I apologize for suggesting that it was.)
-
-
- > >Now *that* is news to me, but then as I mentioned in a previous post, I
- > >make no pretensions toward being a kernel hacker.
- >
- > It's not really news to anyone with much kernel hacking experience.
- > It's been that way since at least V7.
-
- The funny thing is that I'm supposed to know this. I took a course in
- this stuff two years ago, and actually ended up writing some driver
- routines for a printer. It's just that, in the heat of the moment with
- my CD-ROM drive refusing to behave, I forgot how this is supposed to
- work.
-
-
- > >I notice that ofiles (which I didn't run yesterday) reports that nobody
- > >is using /dev/rz5c, even though pff still finds the telnet process on
- > >ptyra.
- >
- > Don't worry about the pty; it has nothing to do with your problem.
-
- I now realize that that's true.
-
-
- > >It's definitely not that the mount point directory is busy. I can't
- > >find any other processes using the "real" /dev/rz5c. So why won't
- > >mount do what I want it to do?
- >
- > I dunno.. did the CDROM autoconfig when you booted?
-
- Yes. I just checked the uerf output from the last system boot. The
- relevant excerpts are:
-
- OS EVENT TYPE 300. SYSTEM STARTUP
- ...
- OCCURRED/LOGGED ON Mon Oct 26 23:38:40 1992 EST
- ...
- rz0 at asc0 slave 0 (RZ58)
- rz1 at asc0 slave 1 (RZ58)
- rz2 at asc0 slave 2 (RZ58)
- rz5 at asc0 slave 5 (RRD42)
- ...
-
-
- Moreover, in playing around with the drive, the following transcript
- occurred:
-
- root@mercury{596}~: mount -r /dev/rz5c /CD
- ufs_mount: /dev/rz5c on /CD: Mount device busy
-
- root@mercury{597}~: mount -r /dev/rz5c /mnt
- ufs_mount: /dev/rz5c on /mnt: Mount device busy
-
- root@mercury{598}~: mount -r /dev/rz5a /mnt
- { HUH? Why can I mount partition 'a' but not 'c'? }
-
- root@mercury{599}~: ls -Failsg /mnt
- /mnt/FSA100: No space left on device
- /mnt/UDT430: No space left on device
- ... { many similar messages }
-
- root@mercury{600}~: umount /dev/rz5a
-
- root@mercury{601}~: mount -r /dev/rz5a /CD
- ufs_mount: /dev/rz5a on /CD: Mount device busy
- { Even worse! Why can't I mount *anything* on /CD? }
-
- root@mercury{602}~: pads /CD
- USER PID PPID CMD TERM TYPE MODE PATH
-
- root@mercury{603}~: ofiles /CD
- /CD (directory)
- USER PID TYPE FD CMD INODE
-
- { Hmmm... /CD sure doesn't *look* busy... }
-
-
- Now, remember, the disk I'm using is part of the Ultrix Consolidated
- Distribution. There shouldn't be anything strange about it. Just to
- be sure, I tried a different disk (a recent Ultrix On-line Documentation
- CD), with *exactly* the same results.
-
- I can mount the 'a' partition, which is interesting but hardly useful,
- but it will only mount on some directories and not others. (Yes, /CD
- and /mnt are on the same partition.)
-
- I can't seem to be able to mount the 'c' partition anywhere.
-
- I'm baffled.
-
- - Steven
- ________________________________________________________________________
- Steven Winikoff | smw@ | "I don't want to run the
- Software Analyst | alcor.concordia.ca | world; I merely want to own
- Computing Services | | a substantial portion of the
- Concordia University | (514) 848-7619 | preferred stock" - Alan Dean
- Montreal, QC, Canada | (10:00-18:00 EST) | Foster, Cat-A-Lyst
-