Re: [Nbd] [PATCH] fix documentation of NBD_CMD_FLUSH

[Alex Bligh <alex@...872...>]

Goswin,

--On 22 May 2011 00:02:44 +0200 Goswin von Brederlow <goswin-v-b@...186...> 
wrote:

> Wouldn't it make sense to allow offset and length to flush only parts of
> an NBD device? offset == length == 0 could be an alias for the whole
> disk.

One could do that. Currently the NBD_CMD_FLUSH implementation is
modeled on Linux's REQ_FLUSH, which is a whole device command.
Are there other users of nbd-server which would benefit from
such a partial flush? You also end up with a question as to whether
you would flush the metadata or no (fsync() flushes metadata
but sync_file_range dones not).

--
Alex Bligh