Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
I have not been following this thread very closely, but I think one of the major issues is that the LVM VFS-lock patch does not work if drbd is layered above lvm. If this is the only issue, then maybe xfs_freeze can be used as a work around. (It can be used in the absense of the vfs-lock patch.) With a kernel lacking the vfs-lock patch, the following does work on a single node setup: xfs_freeze -f /dev/... // Cause XFS to prepare for a snapshot create snapshot xfs_freeze -u /dev/... // Allow XFS to continue handling i/o I don't know if any of the other filesystems over a userspace took to invoke freeze/unfreeze. HTH Greg -- Greg Freemyer