Actually Jamey, I only read NTFSD. OTOH I think this mught have been the right list for the original enquiry.
Not that I can help much, which is why I didn’t reply before. This is a very complicated problem. To do this you need a file system (*not* a filter) which understands that the data on the disc might get changed under it, and uses SCSI block locking(1) to keep the two machines’ view of the disc sane. Cacheing is darn near impossible.
The short answer is - don’t do it. Use networking instead.
Andy.
(1) I’m trawling 10 years or so back in my memory for this, so I could be wrong…
-----Original Message-----
From: Jamey Kirby [mailto:xxxxx@storagecraft.com]
Sent: 21 February 2002 15:49
To: File Systems Developers
Subject: [ntfsd] RE: How to share storage device on logical block access
level?
Cross posting is not allowed on these lists. I think we all read both
lists.
-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Anton Kolomyeytsev
Sent: Thursday, February 21, 2002 6:21 AM
To: File Systems Developers
Subject: [ntfsd] How to share storage device on logical block access
level?
Hi,
Originally posted to ntdev list, maybe somebody here will be able to add
something to what guys in ntdev list wrote?
Regards,
Anton
Hi,
I have a storage device (hard disk) that is accessable from more then
one machine in the same time (let’s assume it’s a SCSI hard disk on
shared
SCSI
bus). While the device is only readen everything is OK, but how can I
make this device writable by more then one client in the same time? How
to keep the file caches consistant? Any ideas? Anybody works with
clusters here?
File system drive will not work I need to use existing one (maybe
modified with filter driver but I’d prefer not to do so…)
Regards,
Anton
P.S. For now I do store the written data in the different space so the
hard
disk is “partially shared”. Only the data that was never touched by
writing.
–
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