https://bugzilla.kernel.org/show_bug.cgi?id=81861
--- Comment #6 from linux-...@crashplan.pro --- When connecting just a single 4 drive group to the good ports (for example 2C) of the external PCIe expander card: cold boot = doesn't detect any of the 4 PUIS drives warm boot = does detect all 4 PUIS drives When powering up using the warm boot method there don't seem to be errors reported by smartctl neither sg_ses. However this cold boot issue might be a different issue from this kernel crash. According to debug messages first a "Set Features" (0xEF) is being sent. My guess is that this set features issues subcommand (0x07): spin up media. And later on the "Identify Device" (0xEC) is sent. When I correctly read the Hitachi specification the Spin Up (Set Features) should be sent after "Drive Identify". For this Hitachi HDS5C3020BLE630 the Drive_Identify (# sg_sat_identify -v /dev/sdb) word 2 outputs "738c" (hex), which translates to specification "Need Set Feature for spin-up after power-up Identify Device is complete" according to HGST specification page 127. Is there a boot parameter (or similar way) to load the mvsas driver without sending the "Set Features" (0xEF) command? -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
