On 2023/8/15 23:48, Bart Van Assche wrote:
On 8/15/23 07:17, haowenchao (C) wrote:
We can reduce probability of blocking whole host when handle error
commands with this patchset, which is important for servers which
deploy large scale disks. And the new error handler is not enabled
default, so it would not affect drivers which do not need it.
Which drivers need this new error handler? I don't see any changes for
SCSI drivers in this patch series other than scsi_debug. Has this patch
series perhaps been developed for a pass-through driver between virtual
machine guests and their host? If so, has it been considered to
configure pass-through such that there is one disk per SCSI host instead
of multiple?
I tested the error hander with our private hardware(the driver code was
not pushed in mainline), as discussed, megaraid_sas, mpt3sas, smartpqi,
hiraid and hisi_sas need this new error handler too, while hisi_sas
needs more steps to using it because it is tightly coupled with
libsas/libata. I want the basic frame to be reviewed first, so just
modify the scsi_debug, which is accessible for everyone and easy to
simulate various kind of error.
I do not know how pass-through driver between virtual machine guests
and their host work, do you mean virtio-scsi in guests OS?
Can you describe more?
Thanks.
Thanks,
Bart.
