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- Path: sparky!uunet!sunquest!spades.aces.com!system
- From: system@spades.aces.com (SYSTEM MANAGER)
- Newsgroups: comp.os.vms
- Subject: Re: Mount verification timed out
- Message-ID: <30DEC199208223472@spades.aces.com>
- Date: 30 Dec 92 15:22:00 GMT
- References: <1992Dec29.152302.1716@das.harvard.edu>
- Sender: news@sunquest.UUCP
- Reply-To: gavron@ACES.COM
- Organization: ACES Consulting Inc.
- Lines: 38
- News-Software: VAX/VMS VNEWS 1.4-b1
-
- In article <1992Dec29.152302.1716@das.harvard.edu>, chen@speed.uucp (Lilei Chen) writes...
- #In our VAX/VMS-cluster a bunch of disks are cross mounted. Somtimes when
- #a node goes down, its disks are marked mount verification timed out. I
- #haven't found a way to get those disks remounted without rebooting the
- #nodes. I am wondering if someone on the net has a solution for that problem.
- #Thanks.
-
- Short: Increase SYSGEN parameter MVTIMEOUT to the time
- it takes one of your nodes to crash and reboot
- plus a minute
-
- Long: Mount verification is what VMS does to a device
- it isn't sure is responding. After a certain
- period of time where the device does not complete
- mount verification, mount verification timeout
- occurs. (This timer is controlled by the parameter
- mentioned above).
-
- If you set the timer short, then as soon as a disk
- times out, all IOs to it are returned, no processes
- get to issue new IOs to the disk, and nobody hangs.
- The bad side of this is that even if the node serving
- this device comes back, the device is inaccessible.
-
- If you set the timer long, then it will survive across
- reboots (the device will) but all processes with pending
- IOs will hang until timeout.
-
- I would try and minimize the crashing of your other nodes...
- #
- #Jim (xue@cfaft5.harvard.edu)
-
- Ehud
-
- --
- Ehud Gavron (EG76)
- gavron@vesta.sunquest.com
- Yow! Is my fallout shelter termite proof?
-