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Is there a program to find out the Multi Version File System MVFS drive in Windows ?

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Is there a program to find out the Multi Version File System MVFS drive in Windows ?
posted May 8, 2014 by Maninder Bath

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1 Answer

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This is often the question for new trigger writers or script writers. You know it is usually the "M drive" on most installations, but you do not want to rely on the convention (and rightly so in this case) as most shops still do not "control" the desktop (in windows ClearCase is always installed locally). Your dilemma is to reliably calculate the MVFS Drive to automate some process in a script or trigger.

The first and most important thing to remember is do not assume. One may be tempted in a trigger to use the ClearCase Environmental variable CLEARCASE_PN or CLEARCASE_XPN and then grab the start of the value, which might resemble:


Coding to this might work for the policy maker that is accustomed to working from under the MVFS drive, but a developer might have their view mapped to some drive (i.e. "J") and they may choose to work there where the ClearCase Environmental variable CLEARCASE_PN or CLEARCASE_XPN might resemble:

J:\ some_vob\some_dir\foo.c

So something a bit more robust and reliable should be used. One option is to use the output of the net use command:

answer May 9, 2014 by Ujjwal Mehra
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