https://community.hpe.com/t5/operating-system-linux/linux-management-of-volume-groups/m-p/3872386#M25400 First - I assume you are using RedHat 4.<BR /><BR />RedHat 4 uses LVM2. It does not have exclusive activation built in. There is a Clustered Logical Volume Manager (CLVM) that is designed to work with Clustered File Systems and only works (to my knowledge) with RedHat's clustered file system - GFS. I think the CLVM APIs are available.<BR /><BR />Which cluster are you planning to use? If it is Serviceguard for Linux, we are releasing a feature in our new release (due out by the end of October) that works around the lack of this LVM function and provides exclusive activation within the cluster.<BR /><BR />If you are planning on using Serviceguard for Linux have your sales person contact the lab to get more detailed information.<BR /><BR />Many other Linux clusters do not support LVM in the cluster. The open source clusters use "STONITH" for data protection. WIth STONITH a node uses various mthods to reset another node that it has determined has "failed". Sat, 30 Sep 2006 11:51:30 GMT Serviceguard for Linux 2006-09-30T11:51:30Z https://community.hpe.com/t5/operating-system-linux/linux-management-of-volume-groups/m-p/3872385#M25399 Hello collegues,<BR />we currently run some applications in HP-UX 11i environment.<BR />We're migrating the SW platform to Linux Red Hat.<BR /><BR />In HP-UX we use the Logical Volume file system, and through the system call vgdisplay, vgchange and vgsync we've setup a shared disks manager, something similar to MC-ServiceGuard in that we're able to synchronize the several nodes of the cluster during the access to the shared resources (e.g. disks and IP addresses).<BR /><BR />In Linux I need some system calls to manage the volume groups and I'd like to know if there are primitives to lock / unlock the shared disks when mounted by a node of the cluster.<BR />I'd like to know if Linux has embedded some utility to syncronize the nodes when accessing a shared disks.<BR /><BR />Sorry if my question is too much generic or stupid at all ;-)<BR /><BR />thanks<BR />Enrico Fri, 29 Sep 2006 10:48:47 GMT https://community.hpe.com/t5/operating-system-linux/linux-management-of-volume-groups/m-p/3872385#M25399 Enrico Venturi 2006-09-29T10:48:47Z https://community.hpe.com/t5/operating-system-linux/linux-management-of-volume-groups/m-p/3872386#M25400 First - I assume you are using RedHat 4.<BR /><BR />RedHat 4 uses LVM2. It does not have exclusive activation built in. There is a Clustered Logical Volume Manager (CLVM) that is designed to work with Clustered File Systems and only works (to my knowledge) with RedHat's clustered file system - GFS. I think the CLVM APIs are available.<BR /><BR />Which cluster are you planning to use? If it is Serviceguard for Linux, we are releasing a feature in our new release (due out by the end of October) that works around the lack of this LVM function and provides exclusive activation within the cluster.<BR /><BR />If you are planning on using Serviceguard for Linux have your sales person contact the lab to get more detailed information.<BR /><BR />Many other Linux clusters do not support LVM in the cluster. The open source clusters use "STONITH" for data protection. WIth STONITH a node uses various mthods to reset another node that it has determined has "failed". Sat, 30 Sep 2006 11:51:30 GMT https://community.hpe.com/t5/operating-system-linux/linux-management-of-volume-groups/m-p/3872386#M25400 Serviceguard for Linux 2006-09-30T11:51:30Z