Hi, everybody, I'm a newbie to ZFS. I have a special question against the COW transaction of ZFS. Does ZFS keeps the sequential consistency when it meets power outage or server crash?
Assume following scenario: My application has only a single thread and it appends the data to the file continuously. Suppose at time t1, it append a buf named A to the file. At time t2, which is later than t1, it appends a buf named B to the file. If the server crashes after t2, is it possible the buf B is flushed back to the disk but buf A is not? Does ZFS keep the consistency that the data written to a file in sequential order or casual order be flushed to disk in the same order? If the writer operation to a single file always binding with the same transaction group, I think the answer should be YES. Hope anybody can help me clarify it. Thank you very much! -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
