From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Wilcox Subject: Missing allowable state transition? Date: Sun, 19 Sep 2004 03:37:49 +0100 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <20040919023749.GF642@parcelfarce.linux.theplanet.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:46219 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id S269729AbUISChu (ORCPT ); Sat, 18 Sep 2004 22:37:50 -0400 Received: from willy by www.linux.org.uk with local (Exim 4.33) id 1C8raH-0002VE-MX for linux-scsi@vger.kernel.org; Sun, 19 Sep 2004 03:37:49 +0100 Content-Disposition: inline List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org I got forwarded this dmesg from a PA-RISC user ... ----- Forwarded message from Stuart Brady ----- Linux version 2.6.9-rc2-pa5 (sdb@1986u10) (gcc version 3.3.4 (Debian 1:3.3.4-6sarge1)) #2 Sat Sep 18 19:38:34 BST 2004 [...] 53c700: Version 2.8 By James.Bottomley@HansenPartnership.com scsi0: 53c710 rev 2 scsi0 : LASI SCSI 53c700 Using anticipatory io scheduler scsi0 (6:0) New error handler wants to abort command scsi0 : destination target 6, lun 0 command = 0x12 00 00 00 24 00 scsi0 (6:0) New error handler wants device reset scsi0 : destination target 6, lun 0 command = 0x12 00 00 00 24 00 scsi0 (6:0) New error handler wants BUS reset, cmd 107d1cc0 scsi0 : destination target 6, lun 0 command = 0x12 00 00 00 24 00 scsi0: Bus Reset detected, executing command 107d1cc0, slot 00008520, dsp 007f0528[0528] failing command because of reset, slot 00008520, cmnd 107d1cc0 0:0:6:0: Illegal state transition created->quiesce Badness in scsi_device_set_state at drivers/scsi/scsi_lib.c:1688 Backtrace: [<10211750>] scsi_device_set_state+0xf0/0x164 [<102117d8>] scsi_device_quiesce+0x14/0x64 [<10216274>] spi_dv_device+0x68/0x178 [<1021639c>] spi_dv_device_work_wrapper+0x18/0x38 [<10139eb4>] worker_thread+0x1ac/0x278 [<1013ea14>] kthread+0xdc/0xe4 [<1010ec5c>] ret_from_kernel_thread+0x1c/0x24 Vendor: SEAGATE Model: ST52160N Rev: 0285 Type: Direct-Access ANSI SCSI revision: 02 scsi(0:0:6:0): Beginning Domain Validation scsi0: (6:0) Asynchronous scsi0: (6:0) Synchronous at offset 8, period 100ns scsi(0:0:6:0): Domain Validation skipping write tests scsi(0:0:6:0): Ending Domain Validation SCSI device sda: 4238282 512-byte hdwr sectors (2170 MB) SCSI device sda: drive cache: write back sda: sda1 sda2 sda3 < sda5 sda6 > Attached scsi disk sda at scsi0, channel 0, id 6, lun 0 ----- End forwarded message ----- Seems to me it should be legitimate to go from created to quiesce. Obviously it's not common, but it does seem legitimate if the first command to the device causes it to require a bus reset. -- "Next the statesmen will invent cheap lies, putting the blame upon the nation that is attacked, and every man will be glad of those conscience-soothing falsities, and will diligently study them, and refuse to examine any refutations of them; and thus he will by and by convince himself that the war is just, and will thank God for the better sleep he enjoys after this process of grotesque self-deception." -- Mark Twain