Re: [Libguestfs] [libnbd PATCH 0/3] opt_list_meta_context
On 9/29/20 6:23 AM, Richard W.M. Jones wrote:
This is not related to the current patch, but generally for libnbd:
(1) Should we be testing interop separately for qemu-storage-daemon
(qsd), or is qsd basically qemu-nbd in a new wrapper so it's not worth
doing it?
(2) I found a bug in the new nbdinfo behaviour:
$ nbdkit -fv file dir=/scratch
(where /scratch is a directory with a lot of files in it)
$ nbdinfo --version
libnbd 1.5.3
$ nbdinfo --list nbd://localhost
[... lots of files shown ...]
nbd_opt_info: recv: Connection reset by peer
nbdkit gives this error:
nbdkit: file[1]: error: client exceeded maximum number of options (32)
Yeah, we really ought to raise nbdkit's limits when .list_exports
returns a large list. We haven't yet released nbdkit 1.24 where the
file driver actually has a large .list_exports; but it may also be a
reason to figure out if libnbd should go to the effort of re-connecting
for the later portion of a list on servers like older nbdkit that limit
the length of the negotiation phase.
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3226
Virtualization: qemu.org | libvirt.org