Hi Christian:
Test case 068(qemu/tests/qemu-iotests/068, which is for loading a
saved VM state from a qcow2 image)
was broken because s390-virtio-ccw uses the new bootloader of
s390-ccw.img, instead of s390-zipl.rom.
1. qemu-img create -f qcow2 scratch/t.qcow2 64M
2. address@hidden qemu-iotests]# ../../s390x-softmmu/qemu-system-s390x
-nodefaults -nographic -monitor stdio -serial none -hda scratch/t.qcow2
QEMU 2.3.94 monitor - type 'help' for more information
(qemu) address@hidden qemu-iotests]#
3. I can get error message from s390-ccw.img as below,
Using guessed DASD geometry.
Using ECKD scheme (block size 4096),
CDL
! No zIPL section in IPL2 record. !
in qemu/pc-bios/s390-ccw/bootmap.c
213 static void ipl_eckd_cdl(void)
214 {
215 XEckdMbr *mbr;
216 Ipl2 *ipl2 = (void *)sec;
217 IplVolumeLabel *vlbl = (void *)sec;
218 block_number_t block_nr;
219
220 /* we have just read the block #0 and recognized it as "IPL1" */
221 sclp_print("CDL\n");
222
223 memset(sec, FREE_SPACE_FILLER, sizeof(sec));
224 read_block(1, ipl2, "Cannot read IPL2 record at block 1");
225
226 mbr = &ipl2->u.x.mbr;
227 IPL_assert(magic_match(mbr, ZIPL_MAGIC), "No zIPL section in IPL2 record.");
We may have two solutions,
1. providing a very small linux image(assuming name is t.qcow2) for s390x which can be IPLed, via "s390x-softmmu/qemu-system-s390x
-nodefaults -nographic -monitor stdio -serial none -hda scratch/t.qcow2"
2. disable test case 068 for s390x
What's your opinion? thanks
On 08/20/2015 10:57 PM, Alexander Graf
wrote:
On 20.08.15 01:20, tu bo wrote:
Hi Alex:
Ping you again just in case you did not get my mail :-)
On 08/13/2015 03:52 PM, tu bo wrote:
Hi Alex:
I added one disk device for test case 068(qemu/tests/qemu-iotests/068,
which is for for loading a saved VM state from a qcow2 image ),
and got the same problem for s390-virtio-ccw. Below is my steps:
1. qemu-img create -f qcow2 scratch/t.qcow2 64M
2. address@hidden qemu-iotests]# ../../s390x-softmmu/qemu-system-s390x
-nodefaults -nographic -monitor stdio -serial none -hda scratch/t.qcow2
QEMU 2.3.94 monitor - type 'help' for more information
(qemu) address@hidden qemu-iotests]#
For s390-virtio, test result is as expected
1. qemu-img create -f qcow2 scratch/t.qcow2 64M
2. address@hidden qemu-iotests]# qemu-system-s390x -nodefaults
-nographic -monitor stdio -serial none -hda scratch/t.qcow2
QEMU 2.3.50 monitor - type 'help' for more information
(qemu) info roms
addr=0000000000009000 size=0x000ce8 mem=ram
name="/usr/share/qemu/s390-zipl.rom"
(qemu) savevm 0
(qemu)
(qemu) quit
address@hidden qemu-iotests]# qemu-system-s390x -nodefaults
-nographic -monitor stdio -serial none -hda scratch/t.qcow2 -loadvm 0
QEMU 2.3.50 monitor - type 'help' for more information
(qemu)
For x86-64, test result is as expected,
1. address@hidden qemu-iotests]$ qemu-img create -f qcow2
scratch/t.qcow2 64M
2. address@hidden qemu-iotests]$
../../x86_64-softmmu/qemu-system-x86_64 -nodefaults -nographic
-monitor stdio -serial none -hda scratch/t.qcow2
QEMU 2.3.94 monitor - type 'help' for more information
(qemu) info roms
fw=genroms/kvmvapic.bin size=0x002400 name="kvmvapic.bin"
addr=00000000fffc0000 size=0x040000 mem=rom name="bios-256k.bin"
/address@hidden/acpi/tables size=0x200000 name="etc/acpi/tables"
/address@hidden/table-loader size=0x001000 name="etc/table-loader"
/address@hidden/acpi/rsdp size=0x000024 name="etc/acpi/rsdp"
(qemu) savevm 0
(qemu)
3. address@hidden qemu-iotests]$
../../x86_64-softmmu/qemu-system-x86_64 -nodefaults -nographic
-monitor stdio -serial none -hda scratch/t.qcow2 -loadvm 0
QEMU 2.3.94 monitor - type 'help' for more information
(qemu)
Could you share me why s390-virtio-ccw has different behavior with
s390-virtio & x86_64 for this scenario? thanks
Because the s390 folks at IBM thought it'd be cool to emit a panic
(read: shut down) in the ccw bootloader when there is a problem? ;)
If this breaks test cases for you, please coordinate with Christian
Borntraeger and Eugene Dvurechenski whether it makes sense to change it.
Alex
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