vgchange -a e

[gigiz]

hallo,
i have a red hat 4 es, with serviceguard-A.11.16.07-0 installed .
I want activated my vg on shared disk in esclusive mode ( vgchange -a e ).
I have insert this command on the control pkg but the volume group will be activated in normal mode (vgchange -a y ) and it can be activated to other node ....
why esclusive mode not work?
HELP ME

[melvyn burnard]

This is because there is NO exclusive acgtivation of an LVM vg on Linux.

[Steven E. Protter]

Shalom,

There is a documented command option for exclusive mode on Linux LVM.

It does not work the same as the same option on HP-UX. It permits other nodes to mount the volume. If the filesystem on the volume is GFS, it will not permit two nodes to for example open the same database. Oracle makes the attempt and receives a response code from the operating system and fails to open the database.

Its not nice and neat like HP-UX and I for one have registered my unhappiness with RH as to how this implementation was done.

SEP

[gigiz]

Ok ...
but i have ext3 file systems.
In HPUX the "vgchange -a e" not permit to mount a file system in two or more node for preserve a file system by data corruption.
At this point in RH I want know the difference between "vgchange -a y" and "vgchange -a e" and how can i do to preserve my file system of data corruption ...
help me Protter the best