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Thu, 27 May 2021 15:05:14 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id AF1D4A405B; Thu, 27 May 2021 15:05:14 +0000 (GMT) Received: from localhost.localdomain (unknown [9.145.160.76]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 27 May 2021 15:05:14 +0000 (GMT) To: Cornelia Huck Cc: Jens Axboe , linux-block@vger.kernel.org, Jan Hoeppner , linux-s390@vger.kernel.org, Heiko Carstens , Vasily Gorbik , Christian Borntraeger References: <20210525125006.157531-1-sth@linux.ibm.com> <20210525125006.157531-2-sth@linux.ibm.com> <20210525162118.0f4e5b84.cohuck@redhat.com> From: Stefan Haberland Subject: Re: [PATCH 1/1] s390/dasd: add missing discipline function Message-ID: Date: Thu, 27 May 2021 17:05:14 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: <20210525162118.0f4e5b84.cohuck@redhat.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Content-Language: en-US X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: gORufMxW4-hcHo6J5oOFFNrC2Ex_GO5b X-Proofpoint-GUID: uTYRneY25sotSs7G_WX5J8V7SkxIV3IX X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391,18.0.761 definitions=2021-05-27_07:2021-05-27,2021-05-27 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 suspectscore=0 mlxlogscore=999 mlxscore=0 adultscore=0 lowpriorityscore=0 malwarescore=0 phishscore=0 spamscore=0 priorityscore=1501 clxscore=1015 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2105270099 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org > [Just to satisfy my curiosity: are there still any FBA devices around, > other than z/VM emulating a DASD frontend for FCP devices?] > Currently no, only emulated ones. So there are likely no "real" path events for the virtual devices and the bug would not be triggered in the wild. But one could accidentally trigger it by explicitly doing a "chchp -v 1" on the virtual path.