On Tue, Feb 16, 2010 at 02:53:18PM -0800, Christo Kutrovsky wrote: > looking to answer myself the following question: > Do I need to rollback all my NTFS volumes on iSCSI to the last available > snapshot every time there's a power failure involving the ZFS storage server > with a disabled ZIL.
No, but not for the reasons you think. If the issue you're concerned about applies, it applies whether the txg is tagged with a snapshot name or not, whether it is the most recent or not. I don't think the issue applies; write reordering might happen within a txg, because it has the freedom to do so within the whole-txg commit boundary. Out of order writes to the disk won't be valid until the txg commits, making them be reachable. If other boundaries also apply (sync commitments via iscsi commands) they will be respected, at at least that granularity. -- Dan.
pgp0adJGU1a96.pgp
Description: PGP signature
_______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
