On 04/06/2016 02:37 PM, Eric Blake wrote: > On 04/06/2016 02:27 PM, Wouter Verhelst wrote: >> >> Also, most of those strings exist solely to make user interaction >> easier. In that context, a 4K string is *way* too long; I'm thinking >> something like 256 seems saner (80 characters, times three because >> UTF-8, round up to the next power of two). > > For that matter, the existing qemu-nbd server has: >
> if (length > 255) {
> LOG("Bad length received");
> goto fail;
Other arbitrary limits that are probably worth documenting for
interoperability: qemu-nbd rejects any NBD_CMD_READ or NBD_CMD_WRITE
with length > 32M.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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