On Sat, Feb 14, 2015 at 03:27:40AM +0000, Nicholas A. Bellinger wrote: > From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx> > > This patch adds a sbc_check_dpofua() function that performs sanity > checks for DPO/FUA command bits. > > It introduces checks to fail when either bit is set, but the backend > device is not advertising support for them. > > It also moves the existing cmd->se_cmd_flags |= SCF_FUA assignement > into the new helper function. This causes I/O errors with ext4 on tcm_loop on what seems to be the first journal commit: [ 41.818126] EXT4-fs (sdc): mounted filesystem with ordered data mode. Opts: (null) [ 48.919107] Got CDB: 0x2a with FUA bit set, but device does not advertise support for FUA write [ 48.920245] sd 3:0:0:0: [sdc] tag#113 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 48.921219] sd 3:0:0:0: [sdc] tag#113 Sense Key : Illegal Request [current] [ 48.921980] sd 3:0:0:0: [sdc] tag#113 Add. Sense: Invalid field in cdb [ 48.922696] sd 3:0:0:0: [sdc] tag#113 CDB: Write(10) 2a 08 00 c4 22 c8 00 00 08 00 [ 48.923619] blk_update_request: critical target error, dev sdc, sector 12853960 [ 48.924501] blk_update_request: critical target error, dev sdc, sector 12853960 [ 48.925598] Aborting journal on device sdc-8. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
