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Fri, 13 Dec 2024 22:30:19 +0000 Received: from CH0PR10MB5338.namprd10.prod.outlook.com ([fe80::5cca:2bcc:cedb:d9bf]) by CH0PR10MB5338.namprd10.prod.outlook.com ([fe80::5cca:2bcc:cedb:d9bf%5]) with mapi id 15.20.8251.015; Fri, 13 Dec 2024 22:30:19 +0000 To: M Nikhil Cc: linux-block@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, nvdimm@lists.linux.dev, linux-scsi@vger.kernel.org, hare@suse.de, hch@lst.de, steffen Maier , Benjamin Block , Nihar Panda Subject: Re: Change in reported values of some block integrity sysfs attributes From: "Martin K. Petersen" In-Reply-To: (M. 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'device_is_integrity_capable' is set if storage device (media) is formatted with PI. That is completely orthogonal to 'write_generate' and 'read_verify' which are enabled if the HBA supports DIX. If the HBA supports DIX Type 0, 'write_generate' and 'read_verify' are enabled even if the attached disk is not formatted with PI. I don't see any change in what's reported with block/for-next in a regular SCSI HBA/disk setup. Will have to look at whether there is a stacking issue wrt. multipathing. -- Martin K. Petersen Oracle Linux Engineering