mirror_qemu/pc-bios/s390-ccw
Thomas Huth 8775d91a0f pc-bios/s390-ccw: Fix problem with invalid virtio-scsi LUN when rebooting
When rebooting a guest that has a virtio-scsi disk, the s390-ccw
bios sometimes bails out with an error message like this:

! SCSI cannot report LUNs: STATUS=02 RSPN=70 KEY=05 CODE=25 QLFR=00, sure !

Enabling the scsi_req* tracing in QEMU shows that the ccw bios is
trying to execute the REPORT LUNS SCSI command with a LUN != 0, and
this causes the SCSI command to fail.
Looks like we neither clear the BSS of the s390-ccw bios during reboot,
nor do we explicitly set the default_scsi_device.lun value to 0, so
this variable can contain random values from the OS after the reboot.
By setting this variable explicitly to 0, the problem is fixed and
the reboots always succeed.

Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1514352
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1510942228-22822-1-git-send-email-thuth@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-11-20 10:35:12 +01:00
..
Makefile pc-bios/s390-ccw: Use rm command during make clean 2017-08-15 09:06:01 +02:00
bootmap.c pc-bios/s390-ccw: Move byteswap functions to a separate header 2017-07-14 12:29:48 +02:00
bootmap.h pc-bios/s390-ccw: Move byteswap functions to a separate header 2017-07-14 12:29:48 +02:00
bswap.h pc-bios/s390-ccw: Move byteswap functions to a separate header 2017-07-14 12:29:48 +02:00
cio.h s390-ccw: Fix alignment for CCW1 2017-08-30 18:23:26 +02:00
iplb.h pc-bios/s390-ccw: Use the ccw bios to start the network boot 2017-02-28 12:04:48 +01:00
libc.h pc-bios/s390-ccw: Move libc functions to separate header 2017-07-14 12:29:48 +02:00
main.c pc-bios/s390-ccw: Move virtio-block related functions into a separate file 2017-07-14 12:29:48 +02:00
netboot.mak s390: set DHCP client architecure id for netboot 2017-09-19 18:21:33 +02:00
netmain.c pc-bios/s390-ccw: Link libnet into the netboot image and do the TFTP load 2017-07-14 12:29:48 +02:00
s390-ccw.h pc-bios/s390-ccw: Add code for virtio feature negotiation 2017-07-14 12:29:48 +02:00
sclp.c s390-ccw: print carriage return with new lines 2017-10-30 09:04:11 +01:00
sclp.h pc-bios/s390-ccw: get LOADPARM stored in SCP Read Info 2017-05-02 15:08:54 +02:00
scsi.h pc-bios/s390-ccw: Get Block Limits VPD device data 2017-05-19 12:29:01 +02:00
start.S pc-bios/s390-ccw: Get device address via diag 308/6 2016-05-17 15:50:29 +02:00
virtio-blkdev.c pc-bios/s390-ccw: Move virtio-block related functions into a separate file 2017-07-14 12:29:48 +02:00
virtio-net.c pc-bios/s390-ccw: Add virtio-net driver code 2017-07-14 12:29:48 +02:00
virtio-scsi.c pc-bios/s390-ccw: Fix problem with invalid virtio-scsi LUN when rebooting 2017-11-20 10:35:12 +01:00
virtio-scsi.h pc-bios/s390-ccw: Build a reasonable max_sectors limit 2017-05-19 12:29:01 +02:00
virtio.c pc-bios/s390-ccw: Add virtio-net driver code 2017-07-14 12:29:48 +02:00
virtio.h pc-bios/s390-ccw: Add virtio-net driver code 2017-07-14 12:29:48 +02:00