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a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=xqWC_Br6kY4A:10 a=6UeiqGixMTsA:10 a=GoEa3M9JfhUA:10 a=VkNPw1HP01LnGYTKEx00:22 a=l-R4seiF2JktxmGwTHgA:9 cc=ntf awl=host:12098 X-Proofpoint-GUID: zr9TE1em_reeEq2GgA-BRVc5Zx0os8zO X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTE1MDAzMSBTYWx0ZWRfXwGScektMK3NT TWoVcE6q8vOW4lxEiybyFKFLRYDVvAbqsS3YvXEssFH8KYhXhTTOhrpfH4Wg/sqMLSdpdHoQGr2 HQL2uQgpZ5Kfg8l6UAGZx4mJNCaDfNDe1iBnHuZ8DTM7ffKSz5Gm3a78QDJTYvjmawyDNj4/40u 9N0zGuHhGxCcbygY772Zhbxx1OCh8XNpj7BNf2oIkcaa7pHndA/5LvDDiNpGV8TYfWaAWAuYWJ4 kekIwNDDfmWwsQ7+HbH/I+LxcS/ZSO3w4UEVdSItccaBcgzOzfLfbSuVMdM5S+Ym9GWP74fMSpa hJ+cnuz1GJQ5lYHFG6H8l6tW61Fg3prpxkrqIFoHmnFgdiUSqdOwDLEstDMhrzC8ULtqFALOdo/ pEvnNYqswSHkZ6D4j7aenS/9+uiux+NFvtc096ly1U1CWZqXHdM= X-Proofpoint-ORIG-GUID: zr9TE1em_reeEq2GgA-BRVc5Zx0os8zO Lukas, > The host->opt_sectors are by default 512 bytes aligned if we have 4KN > SAS disk reporting zero or smaller opt_xfer_block than the > host->opt_sectors we will end up with unaligned queue_limit->io_opt. I am intrigued wrt. which controller returns a host->opt_sectors that would trigger this misalignment. What is the actual value reported? > + lim.io_opt = rounddown(lim.logical_block_size, > + sdp->host->opt_sectors << SECTOR_SHIFT); Those parameters would need to be reversed, I think. You want to round down opt_sectors and not the logical_block_size. -- Martin K. Petersen