search for: aio_poll

...e how it works. docs/libnbd.pod is a good place for a > broader description of how it works. Yes, good idea. State-wise, the existing flow was: Created - Progress only by command issue - namely one of nbd_connect_* Connecting - Progress by aio_notify_read/aio_notify_write (as driven by aio_poll), and progresses through socket establishment, magic numbers, and handshaking Loop of: Ready - Progress by command issue (I/O commands) or aio_notify_read Processing - Progress by aio_notify_read/aio_notify_write, commands are queued rather than causing state transitions finally,...

...one.S:113 > > Thread 1 (Thread 0x7f0f45aa88c0 (LWP 9582)): > #0 0x00007f0f41d5eb0f in __GI_ppoll (fds=0x7f0f470d7a00, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:56 > #1 0x00007f0f45b146db in qemu_poll_ns () > #2 0x00007f0f45b15430 in aio_poll () > #3 0x00007f0f45b0eedd in bdrv_prwv_co () > #4 0x00007f0f45b0efd3 in bdrv_rw_co () > #5 0x00007f0f45b05b35 in img_convert () > #6 0x00007f0f41c94af5 in __libc_start_main (main=0x7f0f45b01e80 <main>, argc=10, ubp_av=0x7fff19cb3ab8, init=<optimized out>, fini=<optim...

...unix/sysv/linux/x86_64/clone.S:113 Thread 1 (Thread 0x7f0f45aa88c0 (LWP 9582)): #0 0x00007f0f41d5eb0f in __GI_ppoll (fds=0x7f0f470d7a00, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:56 #1 0x00007f0f45b146db in qemu_poll_ns () #2 0x00007f0f45b15430 in aio_poll () #3 0x00007f0f45b0eedd in bdrv_prwv_co () #4 0x00007f0f45b0efd3 in bdrv_rw_co () #5 0x00007f0f45b05b35 in img_convert () #6 0x00007f0f41c94af5 in __libc_start_main (main=0x7f0f45b01e80 <main>, argc=10, ubp_av=0x7fff19cb3ab8, init=<optimized out>, fini=<optimized out>, rt...

On Tue, Oct 14, 2014 at 03:40:22PM +0000, VONDRA Alain wrote: > Rich, > I've followed your instructions to trace, but I am not very skilful with gdb, maybe I made a mistake : > > (1) As root do: > > echo core.%p > /proc/sys/kernel/core_pattern -> OK > > (2) Before running virt-v2v, do: > > ulimited -c unlimited -> I think it's

...t; > Thread 1 (Thread 0x7f0f45aa88c0 (LWP 9582)): > #0 0x00007f0f41d5eb0f in __GI_ppoll (fds=0x7f0f470d7a00, nfds=1, > timeout=<optimized out>, sigmask=0x0) at > ../sysdeps/unix/sysv/linux/ppoll.c:56 > #1 0x00007f0f45b146db in qemu_poll_ns () > #2 0x00007f0f45b15430 in aio_poll () > #3 0x00007f0f45b0eedd in bdrv_prwv_co () > #4 0x00007f0f45b0efd3 in bdrv_rw_co () > #5 0x00007f0f45b05b35 in img_convert () > #6 0x00007f0f41c94af5 in __libc_start_main (main=0x7f0f45b01e80 <main>, argc=10, ubp_av=0x7fff19cb3ab8, init=<optimized out>, fini=<optim...

...ly - that was one of my questions.  In fact, adding aio_opt_* is > easy (the sync version would call the aio version, which kicks off the > NBD_OPT_ write; the difference is that the aio version then returns > immediately, probably in aio_is_connecting, while the sync version uses > aio_poll until it is back to either aio_is_negotiating, aio_is_ready, or > aio_is_dead). > >> >> Is there a case where you might want to influence TLS negotiation?  I >> can't think of one right now.  Something about supplying a client >> password from the command line ma...

This is the bare minimum needed to allow the user to take control over the rest of option negotiating. This patch adds several new API: nbd_set_opt_mode() - called during Created to enable the new mode nbd_get_opt_mode() - query whether opt mode is enabled nbd_opt_go() - used in Negotiating state to attempt to use export nbd_opt_abort() - used in Negotiating state to skip Connected state