topic Re: what is mvfs? in Operating System - HP-UX

what is mvfs?

Omar Al-Saiari — Sat, 29 Mar 2003 13:21:23 GMT

hi admin

we have new system with the following entry in fstab

/view /view mvfs nosuid 0 0 1047733323
^^^^

/net/ncbhpux/misc2/vobstore/in.vws /in mvfs nosuid 0 0 1047733324
^^^^

/net/ncbhpux/misc2/vobstore/NVB_PVOB.vbs /NCB_PVOB mvfs nosuid 0 0 1047733324

what is the file system type mvfs

Re: what is mvfs?

Robert-Jan Goossens — Sat, 29 Mar 2003 13:42:56 GMT

Hi,

mvfs = Multimedia Virtual File System

Next link provides some info.

http://ee.tamu.edu/~reddy/papers/icdcs01_final.pdf

Robert-Jan.

Re: what is mvfs?

Michael Steele_2 — Sat, 29 Mar 2003 14:07:17 GMT

Proprietary file system from Clearcase that is a modification of NFS. Stands for Multi Version File System and stores the Clearcase View server. Here are some 11.00 Patches:

s700_800 11.00 POSIX AIO;getdirentries;MVFS;rcp;mmap/IDS; PHKL_27813
Notes: PHKL_28202
s700_800 11.00 ONC/NFS General Release/Performance Patch PHNE_20627
Notes: PHNE_28102

There are no 11.11 patches.

Re: what is mvfs?

Michael Steele_2 — Sat, 29 Mar 2003 14:34:10 GMT

MVFS Definition:

http://www.netapp.com/tech_library/3111.html#2.2.7.

View Server:

http://www.netapp.com/tech_library/3111.html#2.2.5.

Trouble Shooting Clearcase:

http://www.rational.com/media/whitepapers/vob_db_sg.pdf

Re: what is mvfs?

Robert-Jan Goossens — Sat, 29 Mar 2003 18:45:47 GMT

M. Frederick Steele your answer is more accurate. Thanks you learned something new.

Robert-Jan.

Re: what is mvfs?

Sridhar Bhaskarla — Sat, 29 Mar 2003 19:17:49 GMT

Hi,

Frederick gave you the info.

Clearcase is a version control software just like CVS, RCS etc.,

MVFS is multi-version filesystem used by clearcase in conjunction with NFS to provide a view to the user containing hierarchi tree of different versions of the code. There are two components from my faded experience of clearcase administration.

VOB servers: Versioned Object Bases where the actual files and their revisions reside. In your case 'ncbhpux' is a vob server.

VIEW server: Containing "views" for the developers. Your developers can customize their "views" by setting up 'config spc' files.

Mostly SAs do clearcase administration. If you are about to assume that responsibility, here is a white paper from HP on tuning clearcase.

http://h21007.www2.hp.com/dspp/tech/tech_TechDocumentDetailPage_IDX/1,1701,938,00.html

It may get you confused initially but once you got the concepts, it is fun to administer clearcase.

-Sri