KVM - The Linux Kernel-Based Virtual Machine
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KVM, qcow2 and DRBD
September 8, 2009 - 12:00am
I have two host servers ready to install KVM and I would like to provide some degree of load balancing and redundancy.
I plan to use DRBD in dual-primary mode to store the disk images and I was going to use the raw resource ie. "-drive file=/dev/drbd0" but I have since discovered that you need qcow2 image files to support snapshots.
Can anyone tell me if the underlying filesystem for storing the qcow2 images on /dev/drbd0 needs to support distributed locks, or will KVM/qemu handle this? ie. should I use ext2 or gfs? - I dont plan on storing anything other than disk images on the DRBD devices.
Any thoughts appreciated!
Use OCFS2 from Oracle? this is cluster fs for storing databases.
So DRBD->OCFS2->QCOW2
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