On 9/20/21 8:56 PM, Paolo Bonzini wrote:
On Mon, Nov 16, 2020 at 7:31 PM Hannes Reinecke <h...@suse.de> wrote:
The current code sets an infinite timeout on SG_IO requests,
causing the guest to stall if the host experiences a frame
loss.
This patch adds an 'io_timeout' parameter for SCSIDevice to
make the SG_IO timeout configurable, and also shortens the
default timeout to 30 seconds to avoid infinite stalls.
Hannes, could 30 seconds be a bit too short for tape drives?
It would, but then anyone attempting to use tapes via qemu emulation
deserves to suffer.
Tapes are bitchy even when used normally, so attempting to use them
under qemu emulation will land you with lots of unhappy experiences,
where the timeout is the least of your problems.
I sincerely doubt anyone will be using tapes here.
Not in real-world scenarios.
Cheers,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
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