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9w84TZ2sTQG9OXwGvCxAW9JtsbFPqrRyhJtob6wjsdWTgywUYrJtU5L8VV44aaG69yHq7KKi Wang, > scsi optimal_io_size changed from 0 on kernel 6.6, to > 16773120(32760*512, 4095*4096) on kernel 6.12/6.16 Peculiar value. Please share the output of: # sg_readcap -l /dev/sdN and # sg_vpd -p bl /dev/sdN Thanks! -- Martin K. Petersen