Date: Sun, 1 Jun 2008 10:47:11 GMT From: Arnaud Houdelette <arnaud.houdelette@tzim.net> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/124186: [zfs] Illegal request messages when using ZFS on USB flash drive Message-ID: <200806011047.m51AlBpk063998@www.freebsd.org> Resent-Message-ID: <200806011050.m51Ao1Ff042112@freefall.freebsd.org>
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>Number: 124186 >Category: kern >Synopsis: [zfs] Illegal request messages when using ZFS on USB flash drive >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sun Jun 01 10:50:01 UTC 2008 >Closed-Date: >Last-Modified: >Originator: Arnaud Houdelette >Release: 7.0-Stable >Organization: N/A >Environment: FreeBSD carenath.tzim.net 7.0-STABLE FreeBSD 7.0-STABLE #5: Fri May 30 12:14:34 CEST 2008 tzim@carenath.tzim.net:/usr/obj/usr/src/sys/CARENATH amd64 >Description: When creating a zpool on a certain usb flash disk, I keep getting kernel messages: (da0:umass-sim0:0:0:0): SYNCHRONIZE CACHE. CDB: 35 0 0 0 0 0 0 0 0 0 (da0:umass-sim0:0:0:0): CAM Status: SCSI Status Error (da0:umass-sim0:0:0:0): SCSI Status: Check Condition (da0:umass-sim0:0:0:0): ILLEGAL REQUEST asc:20,0 (da0:umass-sim0:0:0:0): Invalid command operation code (da0:umass-sim0:0:0:0): Unretryable error However, the zpool and file system on it seem to work as expected. I can't reproduce the problem with another (more recent) usb flash drive. Below are the (verbose) dmesg output for the usb keys. umass0: <vendor 0x0930 USB Flash Memory, class 0/0, rev 2.00/1.00, addr 2> on uhub5 umass0:0:0:-1: Attached to scbus0 umass1: <USB DISK 2.0, class 0/0, rev 2.00/12.19, addr 3> on uhub5 umass1:1:1:-1: Attached to scbus1 da0 at umass-sim0 bus 0 target 0 lun 0 da0: < USB Flash Memory 1.00> Removable Direct Access SCSI-2 device da0: Serial Number \^_ da0: 40.000MB/s transfers da0: 1930MB (3953664 512 byte sectors: 255H 63S/T 246C) da1 at umass-sim1 bus 1 target 0 lun 0 da1: <USB DISK 2.0 1219> Removable Direct Access SCSI-0 device da1: Serial Number \^_ da1: 40.000MB/s transfers da1: 1912MB (3915776 512 byte sectors: 255H 63S/T 243C) >How-To-Repeat: Plug a certain type (?) of usb key. Enter the following : zfs create testusb /dev/da0 >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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