Re: [PATCH] scsi: allow user to set werror as report

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 12/3/20 3:55 AM, Zihao Chang wrote:
> Ping? This is a fix patch which has been reviewed, whose tree should it go via?

The change itself is in-between 'Block layer' and 'SCSI'
subsystems, so either Paolo or Kevin (Cc'ing qemu-block@).

> 
> Thanks
> Zihao
> 
> On 2020/11/3 22:03, Zihao Chang wrote:
>>
>>
>> On 2020/11/3 18:52, Fam Zheng wrote:
>>> On Tue, 2020-11-03 at 14:12 +0800, Zihao Chang wrote:
>>>> 'enospc' is the default for -drive, but qemu allows user to set
>>>> drive option werror. If werror of scsi-generic is set to 'report'
>>>> by user, qemu will not allow vm to start.
>>>>
>>>> This patch allow user to set werror as 'report' for scsi-generic.
>>>>
>>>> Signed-off-by: Zihao Chang <changzihao1@huawei.com>
>>>> ---
>>>>  hw/scsi/scsi-generic.c | 3 ++-
>>>>  1 file changed, 2 insertions(+), 1 deletion(-)
>>>>
>>>> diff --git a/hw/scsi/scsi-generic.c b/hw/scsi/scsi-generic.c
>>>> index 2cb23ca891..2730e37d63 100644
>>>> --- a/hw/scsi/scsi-generic.c
>>>> +++ b/hw/scsi/scsi-generic.c
>>>> @@ -664,7 +664,8 @@ static void scsi_generic_realize(SCSIDevice *s,
>>>> Error **errp)
>>>>          return;
>>>>      }
>>>>  
>>>> -    if (blk_get_on_error(s->conf.blk, 0) !=
>>>> BLOCKDEV_ON_ERROR_ENOSPC) {
>>>> +    if (blk_get_on_error(s->conf.blk, 0) != BLOCKDEV_ON_ERROR_ENOSPC
>>>> &&
>>>> +        blk_get_on_error(s->conf.blk, 0) !=
>>>> BLOCKDEV_ON_ERROR_REPORT) {
>>>>          error_setg(errp, "Device doesn't support drive option
>>>> werror");
>>>>          return;
>>>>      }
>>>
>>> Accepting the report sounds sane to me, it matches what we actually
>>> (always) do. Is the idea to allow users to spell it out explicitly in
>>> the command line?
>>>
>> Actually, qemu supports user to spell it out explicitly in the command
>> line like "enospc", "report" & "action". This patch just allows user to
>> set werror as "report" for scsi-generic, which is a common scenario.
>>
>>> Reviewed-by: Fam Zheng <fam@euphon.net>
>>>
>>> .
>>>
>