On 10/06/2011 12:53 PM, Folkert van Heusden wrote: > Hi, > > What is the maximum size of a read/write request? E.g. how much data can > be requested/transmitted using one read or write command? > And can this be limited using a nbd-client command-line setting and/or > nbd protocol handshake?
In practice, I'd try to avoid reads that are more than 1 MB minus the reply header size, and writes that are more than 1 MB minus the request header size. qemu-nbd used to choke on those, though the next release will only choke on more than 1 MB. A good way to see what kind of request the kernel might make is to use dd with the O_DIRECT flag. Paolo ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 _______________________________________________ Nbd-general mailing list Nbd-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nbd-general
