Hi, I have a question regarding the combination of LVM + Multipathing in a SAN environment. I have a LUN mapped to a host using iSCSI. I have two two paths to the LUN. This setup, using multipathing, provides me failover functionality. My question is how does LVM react to path failures ? In a failover environment, multipathing can take upto 120 seconds to detect that the active path to the LUN is no more available and then switch to the secondary path. During this 120 seconds, how does LVM react ? Does it really sense that the device is offlined ? Or that information is never passed to LVM and it just allows I/O to happen leaving that responsibility to the multipathing layer ? Thanks, Ritesh -- Ritesh Raj Sarraf RESEARCHUT - http://www.researchut.com "Necessity is the mother of invention." "Stealing logic from one person is plagiarism, stealing from many is research." "The great are those who achieve the impossible, the petty are those who cannot - rrs" _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
