Re: [PATCH v4 0/3] SCSI: Fix issues between removing device and error handle

[Wenchao Hao]

On 2024/3/7 22:43, Wenchao Hao wrote:
> I am testing SCSI error handle with my previous scsi_debug error
> injection patches, and found some issues when removing device and
> error handler happened together.
>
> These issues are triggered because devices in removing would be skipped
> when calling shost_for_each_device().

Ping...

> The issues are found:
> 1. statistic info printed at beginning of scsi_error_handler is wrong
> 2. device reset is not triggered
>
> V4:
>   - Remove the forth patch which fix IO hang when device removing
>     becaust the issue is fixed by commit '6df0e077d76bd (scsi: core:
>     Kick the requeue list after inserting when flushing)'
>
> V3:
>    - Update patch description
>    - Update comments of functions added
>
> V2:
>    - Fix IO hang by run all devices' queue after error handler
>    - Do not modify shost_for_each_device() directly but add a new
>      helper to iterate devices but do not skip devices in removing
>
> Wenchao Hao (3):
>    scsi: core: Add new helper to iterate all devices of host
>    scsi: scsi_error: Fix wrong statistic when print error info
>    scsi: scsi_error: Fix device reset is not triggered
>
>   drivers/scsi/scsi.c        | 46 ++++++++++++++++++++++++++------------
>   drivers/scsi/scsi_error.c  |  4 ++--
>   include/scsi/scsi_device.h | 25 ++++++++++++++++++---
>   3 files changed, 56 insertions(+), 19 deletions(-)