rick@kimbal.lynn.ma.us (Rick Kimball) (08/11/90)
In the application I'm developing I want to have both Lan Manager disk and NFS disks mounted at the same time. On the Lan Manager side we are using 3+OPEN verison 1.1, on the NFS side I have tried FTP's Interdrive, Beam & Whiteside NFS. NONE of these work concurrently together. I have reported my problem to all vendors involved. Basically none of them give a sh** that don't work together. You may ask why I don't pick one way or another. It purely political and I can't change it without leaving. Rick Kimball | INTERNET: rick@kimbal.lynn.ma.us | UUCP: ...!spdcc!kimbal!rick, ...!spt!kimbal!rick | POTS: (617) 599-8864
beame@maccs.dcss.mcmaster.ca (Carl Beame) (08/13/90)
In article <1153@kimbal.lynn.ma.us> rick@kimbal.lynn.ma.us (Rick Kimball) writes: >In the application I'm developing I want to have both Lan Manager >disk and NFS disks mounted at the same time. On the Lan Manager >side we are using 3+OPEN verison 1.1, on the NFS side I have tried >FTP's Interdrive, Beam & Whiteside NFS. > >NONE of these work concurrently together. I have reported >my problem to all vendors involved. Basically none of them >give a sh** that don't work together. > >You may ask why I don't pick one way or another. It purely >political and I can't change it without leaving. > > >Rick Kimball | INTERNET: rick@kimbal.lynn.ma.us > | UUCP: ...!spdcc!kimbal!rick, ...!spt!kimbal!rick > | POTS: (617) 599-8864 I do give a sh** and I am sure that FTP also does. Be aware that 3+OPEN, FTP's Interdrive, Beame & Whiteside's BWNFS ALL use the INT 2F interface from DOS for the redirection of drives. This interface is designed for one and only ONE redirector. Just like you can only run one vendor's TCP/IP, you can only run one redirector that uses the INT 2F interface under DOS. You can run Novell NetWare and BWNFS together, because Netware does not use the INT 2F interface. Please try to distinguish a vendor saying that a problem is either technically impossible or not marketable from he/she not giving a sh**. - Carl Beame President Beame & Whiteside Software LTD.
mshiels@tmsoft.uucp (Michael A. Shiels) (08/14/90)
If only one program can take over the INT2F functions how do you explain the ability to install a network and a CD-ROM (which both use INT2F hooks)? I know if you use DOS 4.x+ it has a different interface networks are supposed to use called IFSFUNC.
ddl@husc6.harvard.edu (Dan Lanciani) (08/15/90)
In article <26C5F881.15729@maccs.dcss.mcmaster.ca>, beame@maccs.dcss.mcmaster.ca (Carl Beame) writes: | I do give a sh** and I am sure that FTP also does. Be aware that | 3+OPEN, FTP's Interdrive, Beame & Whiteside's BWNFS ALL use the INT 2F | interface from DOS for the redirection of drives. This interface is | designed for one and only ONE redirector. Just like you can only run one | vendor's TCP/IP, you can only run one redirector that uses the INT 2F | interface under DOS. While it is clear that the 2f redirector interface was not designed for multiple redirectors, it is not strictly true that the restriction cannot be overcome. For most 2f redirector hooks, it is possible to determine whether the call is really for "this" redirector and to pass it along if it is not. The main disadvantage is that, if a function is passed along to the "next" redirector, and if there is no "next" redirector, a non-specific error will be returned to the application. Another pitfall is that strict implementation of the 2f functions related to the INT 21 redirect-device call precludes coexistence. If we define a well-behaved redirector as one which passes all unrecognized requests along to the "next" redirector then it is possible to have any number of well-behaved redirectors and at most one il-behaved redirector running together. The il-behaved redirector must be loaded first, of course. The MS-networks (and hence IBM PC Lan program) redirector is il-behaved by this definition. I haven't looked at 3+Open but I assume it is similar. The redirector used in FTP's Interdrive and in my own SMB products is capable of being well-behaved with sufficient cooperation from the protocol code with which it is linked. At one point I believe Interdrive ran concurrently with the PC Lan program but, possibly because of the non-specific error problem, it may no longer do so. Similarly, one version of my SMB client is completely well-behaved but another, designed to exactly replace the PC Lan program, never passes along functions related to the INT 21 redirect-device call. The former coexists with Interdrive or even with the PC Lan program itself (for a very odd combination). In conclusion I don't think the situation is completely hopeless but it is beginning to look a little kludgy... [Disclaimer: All redirector-related information is derived strictly by guesswork and may represent a complete misinterpretation of the situation. Information about specific products may be out-of-date or just plain wrong.] Dan Lanciani ddl@harvard.*
ljm@OBELIX.TWG.COM (08/16/90)
>In the application I'm developing I want to have both Lan Manager >disk and NFS disks mounted at the same time. On the Lan Manager >side we are using 3+OPEN verison 1.1, on the NFS side I have tried >FTP's Interdrive, Beam & Whiteside NFS. Wollongong's PathWay Client NFS for DOS works with LAN Manager. As others have been pointing out, two INT 2F redirectors cannot co-exist unless one of them passes redirector requests along. enjoy, leo j mclaughlin iii The Wollongong Group ljm@twg.com