Christoph Hellwig wrote: > On Fri, Sep 26, 2008 at 05:52:35PM +0900, Takashi Sato wrote: >> I think that your concern is that the freezer cannot recognize the occurrence >> of a timeout and it continues the backup process and the backup data is >> corrupted finally. > > What timeout should happen? the freeze ioctl must not return until the > filesystem is a clean state and all writes are blocked. The suggestion was that *UN*freeze would return ETIMEDOUT if the filesystem had already unfrozen itself, I think. That way you know that the snapshot you just took is worthless, at least. I'm still not really sold on the timeout, but I think the above was the intent. -Eric -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel