From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 14495362 for ; Tue, 7 Mar 2023 10:32:22 +0000 (UTC) Received: from pps.filterd (m0098409.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3278kgIu028652; Tue, 7 Mar 2023 10:32:22 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=date : from : to : cc : subject : message-id : reply-to : references : content-type : in-reply-to : mime-version; s=pp1; bh=+pkEcBhDX7653P4CgydRWh+nO8hBvA2oBpE7vIGSOY8=; b=jKrHW8txiPnT4lgmdT/ergByxJ+ttompPYwaSualxsvkt/Hl/PDUfSwtdObvPluh5nA2 bBeAohQ9B2sWlia3RViKmTGHFvfn8UhqmCPlL/Pi8qeB8oRenfw3tmiyqMVl/CEAxD7Q QhrgDzLX59fO3U+AllTuMasUeE/uA3Is5rMgSwiF1g/yCQ9Nill85HhX2DacVt/pQKG0 dF8SYwqg+MYjPByBdfS9WaYv9C6ShNIUo7UBZ52ctbqe6CJ3CZdkcp7WxWMnXRAFrikm lw71hhhBAaRufOCASa+h7xtnqvIbtMJxXNvvNLPpEpAB7xb+KzD4M1Iw0My6QcMhYafG lg== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3p4ysekr19-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 07 Mar 2023 10:32:21 +0000 Received: from m0098409.ppops.net (m0098409.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 3279uCiQ028541; Tue, 7 Mar 2023 10:32:21 GMT Received: from ppma04ams.nl.ibm.com (63.31.33a9.ip4.static.sl-reverse.com [169.51.49.99]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3p4ysekr07-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 07 Mar 2023 10:32:21 +0000 Received: from pps.filterd (ppma04ams.nl.ibm.com [127.0.0.1]) by ppma04ams.nl.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 3271Ojd2005745; Tue, 7 Mar 2023 10:32:18 GMT Received: from smtprelay07.fra02v.mail.ibm.com ([9.218.2.229]) by ppma04ams.nl.ibm.com (PPS) with ESMTPS id 3p41brc3j0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 07 Mar 2023 10:32:18 +0000 Received: from smtpav04.fra02v.mail.ibm.com (smtpav04.fra02v.mail.ibm.com [10.20.54.103]) by smtprelay07.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 327AWGCD39059878 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 7 Mar 2023 10:32:16 GMT Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3EA4320043; Tue, 7 Mar 2023 10:32:16 +0000 (GMT) Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7F4C920040; Tue, 7 Mar 2023 10:32:14 +0000 (GMT) Received: from linux.vnet.ibm.com (unknown [9.126.150.29]) by smtpav04.fra02v.mail.ibm.com (Postfix) with SMTP; Tue, 7 Mar 2023 10:32:14 +0000 (GMT) Date: Tue, 7 Mar 2023 16:02:13 +0530 From: Srikar Dronamraju To: "Martin K. Petersen" Cc: Lee Duncan , Linux regressions mailing list , "James E.J. Bottomley" , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Lee Duncan , Martin Wilck , Hannes Reinecke Subject: Re: [PATCH] scsi: core: Add BLIST_NO_ASK_VPD_SIZE for some VDASD Message-ID: <20230307103213.GA1005120@linux.vnet.ibm.com> Reply-To: Srikar Dronamraju References: <20220928181350.9948-1-leeman.duncan@gmail.com> <88927435-ae58-c24b-e7b7-b675985de433@leemhuis.info> <86D685F2-D411-460B-A09B-6BE942372F0A@gmail.com> Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: oaQB3v3l3wz0LKU3agbe5k4sXfoFBVSn X-Proofpoint-GUID: eRvwFxqcGhOo7TEa-KxFXtMofFzJRTyl X-Proofpoint-UnRewURL: 0 URL was un-rewritten Precedence: bulk X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-03-07_04,2023-03-07_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 clxscore=1011 malwarescore=0 adultscore=0 spamscore=0 impostorscore=0 lowpriorityscore=0 mlxlogscore=999 suspectscore=0 bulkscore=0 priorityscore=1501 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2303070095 * Martin K. Petersen [2023-03-06 21:54:42]: Hi Martin, > > Lee, > > > I really prefer specifically listing ???offending??? hardware, rather than > > automatically covering for it. > > Would the following patch work? > Yes, this patch also works atleast for me. > Martin > > ---8<--- > > Subject: [PATCH] scsi: core: Add BLIST_NO_VPD_SIZE for some VDASD > > Some storage, such as AIX VDASD (virtual storage) and IBM 2076 (front > end) do not like commit c92a6b5d6335 ("scsi: core: Query VPD size > before getting full page"). > > That commit changed getting SCSI VPD pages so that we now read just > enough of the page to get the actual page size, then read the whole > page in a second read. The problem is that the above mentioned > hardware returns zero for the page size, because of a firmware > error. In such cases, until the firmware is fixed, this new blacklist > flag says to revert to the original method of reading the VPD pages, > i.e. try to read as a whole buffer's worth on the first try. > > [mkp: reworked somewhat] > > Link: https://lore.kernel.org/r/20220928181350.9948-1-leeman.duncan@gmail.com > Fixes: c92a6b5d6335 ("scsi: core: Query VPD size before getting full page") > Reported-by: Martin Wilck > Suggested-by: Hannes Reinecke > Signed-off-by: Lee Duncan > Signed-off-by: Martin K. Petersen > > diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c > index 9feb0323bc44..dff1d692e756 100644 > --- a/drivers/scsi/scsi.c > +++ b/drivers/scsi/scsi.c > @@ -326,6 +326,9 @@ static int scsi_get_vpd_size(struct scsi_device *sdev, u8 page) > unsigned char vpd_header[SCSI_VPD_HEADER_SIZE] __aligned(4); > int result; > > + if (sdev->no_vpd_size) > + return SCSI_DEFAULT_VPD_LEN; > + > /* > * Fetch the VPD page header to find out how big the page > * is. This is done to prevent problems on legacy devices > diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c > index c7080454aea9..bc9d280417f6 100644 > --- a/drivers/scsi/scsi_devinfo.c > +++ b/drivers/scsi/scsi_devinfo.c > @@ -134,7 +134,7 @@ static struct { > {"3PARdata", "VV", NULL, BLIST_REPORTLUN2}, > {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN}, > {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN}, > - {"AIX", "VDASD", NULL, BLIST_TRY_VPD_PAGES}, > + {"AIX", "VDASD", NULL, BLIST_TRY_VPD_PAGES | BLIST_NO_VPD_SIZE}, > {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN}, > {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36}, > {"BROWNIE", "1200U3P", NULL, BLIST_NOREPORTLUN}, > @@ -188,6 +188,7 @@ static struct { > {"HPE", "OPEN-", "*", BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES}, > {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN}, > {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, > + {"IBM", "2076", NULL, BLIST_NO_VPD_SIZE}, > {"IBM", "2105", NULL, BLIST_RETRY_HWERROR}, > {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN}, > {"IOMEGA", "ZIP", NULL, BLIST_NOTQ | BLIST_NOLUN}, > diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c > index f9b18fdc7b3c..6042a5587bc3 100644 > --- a/drivers/scsi/scsi_scan.c > +++ b/drivers/scsi/scsi_scan.c > @@ -1055,6 +1055,9 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result, > else if (*bflags & BLIST_SKIP_VPD_PAGES) > sdev->skip_vpd_pages = 1; > > + if (*bflags & BLIST_NO_VPD_SIZE) > + sdev->no_vpd_size = 1; > + > transport_configure_device(&sdev->sdev_gendev); > > if (sdev->host->hostt->slave_configure) { > diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h > index 3642b8e3928b..15169d75c251 100644 > --- a/include/scsi/scsi_device.h > +++ b/include/scsi/scsi_device.h > @@ -145,6 +145,7 @@ struct scsi_device { > const char * model; /* ... after scan; point to static string */ > const char * rev; /* ... "nullnullnullnull" before scan */ > > +#define SCSI_DEFAULT_VPD_LEN 255 /* default SCSI VPD page size (max) */ > struct scsi_vpd __rcu *vpd_pg0; > struct scsi_vpd __rcu *vpd_pg83; > struct scsi_vpd __rcu *vpd_pg80; > @@ -215,6 +216,7 @@ struct scsi_device { > * creation time */ > unsigned ignore_media_change:1; /* Ignore MEDIA CHANGE on resume */ > unsigned silence_suspend:1; /* Do not print runtime PM related messages */ > + unsigned no_vpd_size:1; /* No VPD size reported in header */ > > unsigned int queue_stopped; /* request queue is quiesced */ > bool offline_already; /* Device offline message logged */ > diff --git a/include/scsi/scsi_devinfo.h b/include/scsi/scsi_devinfo.h > index 5d14adae21c7..6b548dc2c496 100644 > --- a/include/scsi/scsi_devinfo.h > +++ b/include/scsi/scsi_devinfo.h > @@ -32,7 +32,8 @@ > #define BLIST_IGN_MEDIA_CHANGE ((__force blist_flags_t)(1ULL << 11)) > /* do not do automatic start on add */ > #define BLIST_NOSTARTONADD ((__force blist_flags_t)(1ULL << 12)) > -#define __BLIST_UNUSED_13 ((__force blist_flags_t)(1ULL << 13)) > +/* do not ask for VPD page size first on some broken targets */ > +#define BLIST_NO_VPD_SIZE ((__force blist_flags_t)(1ULL << 13)) > #define __BLIST_UNUSED_14 ((__force blist_flags_t)(1ULL << 14)) > #define __BLIST_UNUSED_15 ((__force blist_flags_t)(1ULL << 15)) > #define __BLIST_UNUSED_16 ((__force blist_flags_t)(1ULL << 16)) > @@ -74,8 +75,7 @@ > #define __BLIST_HIGH_UNUSED (~(__BLIST_LAST_USED | \ > (__force blist_flags_t) \ > ((__force __u64)__BLIST_LAST_USED - 1ULL))) > -#define __BLIST_UNUSED_MASK (__BLIST_UNUSED_13 | \ > - __BLIST_UNUSED_14 | \ > +#define __BLIST_UNUSED_MASK (__BLIST_UNUSED_14 | \ > __BLIST_UNUSED_15 | \ > __BLIST_UNUSED_16 | \ > __BLIST_UNUSED_24 | \ -- Thanks and Regards Srikar Dronamraju