Re: [Libguestfs] Communication issues between NBD driver and NBDKit server
On Sun, May 15, 2022 at 11:45 AM Nikolaus Rath <nikolaus(a)rath.org> wrote:
Hi,
I am observing some strange errors when using the Kernel's NBD driver with NBDkit.
On the kernel side, I see:
May 15 16:16:11 vostro.rath.org kernel: nbd0: detected capacity change from 0 to
104857600
May 15 16:16:11 vostro.rath.org kernel: nbd1: detected capacity change from 0 to
104857600
May 15 16:18:23 vostro.rath.org kernel: block nbd0: Possible stuck request
00000000ae5feee7: control (write@4836316160,32768B). Runtime 30 seconds
May 15 16:18:25 vostro.rath.org kernel: block nbd0: Possible stuck request
000000007094eddc: control (write@5372947456,10240B). Runtime 30 seconds
The server isn't responding to the request fast enough, and you don't
have a timeout set so it'll just hang until you disconnect.
May 15 16:18:27 vostro.rath.org kernel: block nbd0: Suspicious reply
89 (status 0 flags 0)
The server double replied to a request. Thanks,
Josef