From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michel Meyers Subject: Re: [PATCH 1/1] scsi: add Synology DSM 6.0 and higher to 1024 sector blacklist Date: Wed, 20 Apr 2016 10:46:45 +0200 Message-ID: <571741F5.7060305@tcnnet.com> References: <20160114003437.354D28EE1D4@bedivere.hansenpartnership.com> <570B63B8.6080104@tcnnet.com> <570CB1C8.5050106@tcnnet.com> <570D4A19.40000@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Return-path: Received: from smail.vo.lu ([80.90.45.96]:55500 "EHLO smail.vo.lu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932888AbcDTIrL (ORCPT ); Wed, 20 Apr 2016 04:47:11 -0400 In-Reply-To: Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: "Martin K. Petersen" , Mike Christie Cc: linux-scsi@vger.kernel.org On 2016-04-12 21:22, Martin K. Petersen wrote: >>>>>> "Mike" == Mike Christie writes: > >>> Mike: Any preference? > > Mike> I think quirking SYNOLOGY is best. It will be the safest route and > Mike> work for all devices. > > Michel: Please spin a new version of the patch. Apologies for not getting back earlier. SYNOLOGY have released a new version of their OS indicating that they have worked to fix the iSCSI problem (and another one to actually make that update installable): https://www.synology.com/en-global/releaseNote/RS10613xs+ - "Fixed multiple issues that might cause iSCSI service to hang under heavy loading and performing Vmware VAAI commands." - "Fixed an issue where DSM 6.0-7321 Update 1 could not be normally installed with Auto-Update." (They have not updated my support ticket on this case thus far.) Both my SYNOLOGY appliances now seem to show correct vpd data when queried: root@server:/# sg_vpd -p bl /dev/sdb Block limits VPD page (SBC): Write same non-zero (WSNZ): 1 Maximum compare and write length: 1 blocks Optimal transfer length granularity: 128 blocks Maximum transfer length: 8192 blocks Optimal transfer length: 1152 blocks Maximum prefetch length: 0 blocks root@server:/# sg_vpd -p bl /dev/sdd Block limits VPD page (SBC): Write same non-zero (WSNZ): 1 Maximum compare and write length: 1 blocks Optimal transfer length granularity: 128 blocks Maximum transfer length: 8192 blocks Optimal transfer length: 512 blocks Maximum prefetch length: 0 blocks I am currently running tests with an unmodified Debian 4.4.0-1-amd64 kernel, so unless I can reproduce the problem, I suggest we leave the current blacklist as is (thereby only quirking the pre-6.0 SYNOLOGY volumes that are affected) and discard the new patch. -- Michel