Hello, I am RAID HBA driver engineer here at Microsemi. We are working on linux driver development for Microsemi SAS/SATA RAID HBA controllers. As per our understanding, while a drive is processing the SANITIZE command: - The drive should still be exposed to the OS. - The drive will fail all commands other than REQUEST SENSE When we initiate SCSI SANITIZE operation on disk drive, from the OS dmesg, we could see that continuous SCSI READ (10) commands have been sent by the OS upper layer drivers and drive reports ASC: 04 ASCQ: 1B "LOGICAL UNIT NOT READY, SANITIZE IN PROGRESS". Since the sanitize operation is in progress, the drive will fail the commands. Although, OS could see drive is sanitizing, we are not sure why does OS upper layer driver is sending SCSI READ (10). During the OS boot, if the drive is sanitizing, OS boot is taking very long time and call trace issue has been occurred. It would be of great help if you could shed some light on this issue. Snippet of dmesg: [ 202.659196] sd 0:0:11:0: [sdm] CDB: Read(10) 28 00 00 00 00 00 00 00 01 00 [ 202.659198] blk_update_request: I/O error, dev sdm, sector 0 [ 202.659201] Buffer I/O error on dev sdm, logical block 0, async page read [ 202.659294] sd 0:0:11:0: [sdm] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 202.659299] sd 0:0:11:0: [sdm] Sense Key : Not Ready [current] [ 202.659303] sd 0:0:11:0: [sdm] Add. Sense: Logical unit not ready, sanitize in progress [ 202.659308] sd 0:0:11:0: [sdm] CDB: Read(10) 28 00 00 00 00 00 00 00 01 00 [ 202.659311] blk_update_request: I/O error, dev sdm, sector 0 [ 202.659314] Buffer I/O error on dev sdm, logical block 0, async page read [ 202.659322] sdm: unable to read partition table [ 202.659633] sd 0:0:11:0: [sdm] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 202.659638] sd 0:0:11:0: [sdm] Sense Key : Not Ready [current] [ 202.659641] sd 0:0:11:0: [sdm] Add. Sense: Logical unit not ready, sanitize in progress [ 202.659645] sd 0:0:11:0: [sdm] CDB: Read(10) 28 00 00 00 00 00 00 00 01 00 [ 202.659648] blk_update_request: I/O error, dev sdm, sector 0 [ 202.660621] sd 0:0:11:0: [sdm] Spinning up disk... [ 204.067155] Buffer I/O error on dev sdm, logical block 488378624, async page read [ 204.122152] SGI XFS with ACLs, security attributes, no debug enabled [ 204.123494] XFS (dm-0): Mounting V5 Filesystem [ 204.289817] XFS (dm-0): Ending clean mount [ 240.069283] INFO: task systemd-udevd:251 blocked for more than 120 seconds. [ 240.069289] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message [ 203.661324] ..................................... [ 240.069293] systemd-udevd D [ 240.069296] ffffffffc00c3580 0 251 1 0x00000004 [ 240.069301] ffff88007e0e7d18 0000000000000082 ffff88007e0ceeb0 ffff88007e0e7fd8 [ 240.069306] ffff88007e0e7fd8 ffff88007e0e7fd8 ffff88007e0ceeb0 ffffffffffffffff [ 240.069311] 0000000000000000 ffffffffc00c35d0 0000000000000001 ffffffffc00c3580 [ 240.069316] Call Trace: [ 240.069328] [<ffffffff816a94c9>] schedule+0x29/0x70 [ 240.069334] [<ffffffff810b7e85>] async_synchronize_cookie_domain+0x85/0x150 [ 240.069340] [<ffffffff810b1910>] ? wake_up_atomic_t+0x30/0x30 [ 240.069346] [<ffffffff810b7f87>] async_synchronize_full+0x17/0x20 [ 240.069351] [<ffffffff81100790>] load_module+0x1fc0/0x29e0 [ 240.069358] [<ffffffff8134bbf0>] ? ddebug_proc_write+0xf0/0xf0 [ 240.069365] [<ffffffff81101275>] SyS_init_module+0xc5/0x110 [ 240.069371] [<ffffffff816b4fc9>] system_call_fastpath+0x16/0x1b Thanks, Mahesh
