What does the physical disk geometry have to do with Files-11?
At least ODS-1 couldn't care less.
Johnny
On 2016-03-03 17:05, Timothe Litt wrote:
On 03-Mar-16 09:35, Joshua Overmiller wrote:
I've built the ods2 tool and ods2reader from
<http://www.vms2linux.de/>http://www.vms2linux.de/ in order to try to
read the simh disk files.
However, trying "ods2 mount d0.dsk" responds with "Mount failed with
2312".
Trying "ods2reader -l d0:[000000]" gives:
d0:[000000] -- Bad block in file
d0:[000000] --- Cant't read index file header on d0
d0.dsk corresponds to DAU0 which is a RA92 disk.
Note there were some warnings when building both tools, but they both
build.
For ods2:
ods2.c: In function ‘main’:
ods2.c:1165:13: warning: ‘gets’ is deprecated (declared at
/usr/include/stdio.h:638) [-Wdeprecated-declarations]
if (gets(str) == NULL) break;
ods2.o: In function `main':
ods2.c:(.text.startup+0x2d5): warning: the `gets' function is
dangerous and should not be used.
For ods2reader:
Various warnings about implicit declaraions of builtin functions
strlen, strcpy, and strcat.
Networking is your best option at this time. It shouldn't be very
difficult to get running.
ODS2 has serious issues - as it turns out, reworking is is a subtask of
my current project.
The public version (the one you found) reads better than it writes - but
it has memory
corruption issues and problems with certain pointers in the Files-11 ODS.
Actually, writing is a disaster - don't try it. It has two modes:
corrupt the disk and
crash.
You can try mounting an image on an loop device (losetup -rfv file &&
ods2 mount file), but
you'll run into problems. Especially with disks as large as an RA92.
I have a version that will read a simulator image directly as well as
physical devices.
It seems to read individual disks OK, at least on windows and Linux.
Volumesets are a work in progress, but improving.
If you just mount a disk, take directories and read files, it works
most of the time.
But there are still bugs that will take quite some time to work
out. Errors (and dismount) are problematic.
I can push a snapshot to my repo on github, but it's very much a work in
progress & make no guarantees.
No ETA on a stable version - the more I look, the more I find to fix....
and the most annoying stuff turns out
to be involved. If the snapshot would be useful to you, contact me
off-list.
I haven't done anything with ods2reader. If relies on a strict
interpretation of the Files-11 spec, it needs
the physical disk geometry, which isn't in simulator disk images.
More info to follow to get some insight into what my plans are.
My end goal is to migrate a physical MicroVAX 3100-90 VMS 5.5 system
to simh.
I've been playing around with learning the BACKUP utility and
Stand-Alone BACKUP under simh before I try anything out on the real
system. I can make an image backup of the system disk to a SAVE_SET
on another disk. The MicroVAX has the CMUIP installed so I can FTP
the SAVE_SET off onto our network. I plan to write the SAVE_SET to an
iso image for simh VAX to mount and copy to a local disk. I will then
use BACKUP to restore the save set to a local disk.
I will also want to get some files off the simh VAX. Hence the need
to mount the simh disk image files.
I'm struggling with getting the networking running in simh, so I'm
looking into this route. However, other suggestions for getting files
out of the simh disk image files are welcome.
Thanks,
Josh
.
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