Solaris 9 Home Directory, Two Machines Sharing a NAS Post: 303023977

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Top Forums Shell Programming and Scripting Solaris 9 Home Directory, Two Machines Sharing a NAS Post 303023977 by hicksd8 on Wednesday 26th of September 2018 03:12:21 PM

09-26-2018

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Whoa!! Hang on a minute. Let's explain some things here.

Any one filesystem can only be mounted by one operating system at a time. Mounting the same filesystem on multiple machines is an instant recipe for corruption.

Sometimes storage systems (SANs, NAS's, etc) can be dual-tailed into two different machines but only when a suitable software suite (cluster software) is managing the ownership (at any one time) of each filesystem on the storage. Then, when a failover occurs, the (expensive) cluster suite will swap over the mounted filesystems from one system to another.

As Jim eluded to, the filesystem(s) can only be mounted by one O/S which controls file locking, file access (read/write), etc, and any second node needs to access those filesystems over the network (via NFS). So, repeat, mounting a filesystem on more than one system at the same time is big trouble. Make no mistake about that.

Last edited by hicksd8; 09-26-2018 at 04:25 PM..

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LEARN ABOUT DEBIAN

filesystem

filesystem(7)						 Miscellaneous Information Manual					     filesystem(7)

NAME

       filesystem - event signalling that filesystems have been mounted

SYNOPSIS

       filesystem [ENV]...

DESCRIPTION

       The  filesystem	event  is  generated by the mountall(8) daemon after it has mounted all filesystems listed in fstab(5).  mountall(8) emits
       this event as an informational signal, services and tasks started or stopped by this event will do so in parallel with other activity.

EXAMPLE

       A service that wishes to be running once filesystems are mounted might use:

	      start on filesystem

SEE ALSO

       mounting(7) mounted(7) virtual-filesystems(7) local-filesystems(7) remote-filesystems(7) all-swaps(7)

mountall							    2009-12-21							     filesystem(7)