Hi! I have a wuestion: If I want to limit parallel execution of some resources, how can I configure that?
Background: Some resources may hit some OS bug when demanding high I/O (e.g. starting several Xen-VMs residing on a OCFS2 filesystem that is mirrored by cLVM). The I/O performance will drop approximately to zero when cLVM is also mirroring. That's not because of the I/O channel being saturated, but because of terrible programming regarding cLVM... anyway: Would it work to define an advisory ordering of resources (in addition to a different mandatory ordering), so if crm would schedule alle those resources at one (in parallel), it would actually schedule the sequentially? If I stop one resource, will those "logically after" the one being stopped be also stopped due to advisory ordering then? Maybe a new mechanism is needed to restrict parallelism based on resources (i.e. a new type of constraint). Regards, Ulrich _______________________________________________ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
