Jaz drive mount question

QNX Newsgroups (Archives) qdn.public.qnx4
1

Hi.

I have been using the 1 GB and 2 GB Jaz drives with QNX 4 using the Adaptec
2940 SCSI card. This has been working good, for the most part.

In any case I have a question. If there is no activity for a while to the
Jaz drive then the mount directory is not accessible, why?

TIA

Augie

2

I use this same setup, but generally I just turn on the Jaz,
boot up, backup and turn the drive off, so I may not be
seeing the problem you are mentioning. Still I don’t
understand what you are saying. Do you mean that the
mount directory dissappears on its own? That seems very
strange.

One possible phenomenon you could see is that after a while
a Jaz disk will spin down. When you access the disk again
the disk will start to spin up, but the driver might get
I/O errors until it is spun up.


Previously, Augie Henriques wrote in qdn.public.qnx4:

Hi.

I have been using the 1 GB and 2 GB Jaz drives with QNX 4 using the Adaptec
2940 SCSI card. This has been working good, for the most part.

In any case I have a question. If there is no activity for a while to the
Jaz drive then the mount directory is not accessible, why?

TIA

Augie

\

–
Mitchell Schoenbrun --------- maschoen@pobox.com

3

: Previously, Augie Henriques wrote in qdn.public.qnx4:
: > Hi.
: >
: > I have been using the 1 GB and 2 GB Jaz drives with QNX 4 using the Adaptec
: > 2940 SCSI card. This has been working good, for the most part.
: >
: > In any case I have a question. If there is no activity for a while to the
: > Jaz drive then the mount directory is not accessible, why?
: >
: > TIA
: >
: > Augie

Mitchell Schoenbrun (maschoen@pobox.com) wrote:
[…]
: One possible phenomenon you could see is that after a while
: a Jaz disk will spin down. When you access the disk again
: the disk will start to spin up, but the driver might get
: I/O errors until it is spun up.
: –
: Mitchell Schoenbrun --------- maschoen@pobox.com

You should enlarge the timeout of your Fsys.xxx driver. I use
Fsys.aha7scsi with option -T 10 successfully.

Jochen Schneider, University of Applied Sciences Hamburg
Mail: Jochen.Schneider@–NO-SPAM–ds3.etech.haw-hamburg.de

4

I have not had access to a Jaz drive for about 4 - t years. But I do
remember this problem. I do think that it is caused by what Mitch is saying
but I don’t remember it recovering on its own when the disk spins back up.

–
Bill Caroselli – 1(530) 510-7292
Q-TPS Consulting
QTPS@EarthLink.net


“Mitchell Schoenbrun” <maschoen@pobox.com> wrote in message
news:Voyager.011219144821.1249A@node1…

I use this same setup, but generally I just turn on the Jaz,
boot up, backup and turn the drive off, so I may not be
seeing the problem you are mentioning. Still I don’t
understand what you are saying. Do you mean that the
mount directory dissappears on its own? That seems very
strange.

One possible phenomenon you could see is that after a while
a Jaz disk will spin down. When you access the disk again
the disk will start to spin up, but the driver might get
I/O errors until it is spun up.


Previously, Augie Henriques wrote in qdn.public.qnx4:
Hi.

I have been using the 1 GB and 2 GB Jaz drives with QNX 4 using the
Adaptec
2940 SCSI card. This has been working good, for the most part.

In any case I have a question. If there is no activity for a while to
the
Jaz drive then the mount directory is not accessible, why?

TIA

Augie




\

Mitchell Schoenbrun --------- > maschoen@pobox.com