File: build-vm-kvm

package info (click to toggle)
obs-build 20180831-2
  • links: PTS, VCS
  • area: main
  • in suites: buster, sid
  • size: 2,396 kB
  • sloc: perl: 10,030; sh: 3,142; ansic: 284; makefile: 151; python: 35
file content (348 lines) | stat: -rw-r--r-- 11,937 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
#
# kvm/qemu specific functions
#
################################################################
#
# Copyright (c) 1995-2014 SUSE Linux Products GmbH
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or 3 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program (see the file COPYING); if not, write to the
# Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#
################################################################

kvm_bin=/usr/bin/qemu-kvm
test ! -x $kvm_bin  -a -x /usr/bin/kvm && kvm_bin=/usr/bin/kvm
kvm_console=ttyS0

# assume virtio support by default
kvm_device=virtio-blk-pci
kvm_serial_device=
kvm_rng_device=virtio-rng-pci
kvm_options=

kvm_check_ppc970() {
    if ! grep -q -E '(kvm_rma_count.*kvm_hpt_count)|(kvm_hpt_count.*kvm_rma_count)' /proc/cmdline ; then 
	cleanup_and_exit 3 "put kvm_rma_count=<VM number> or kvm_hpt_count=<> to your boot options"
    fi
}

kvm_check_hugetlb() {
    if ! grep -q "$HUGETLBFSPATH" /proc/mounts ; then
	cleanup_and_exit 3 "hugetlbfs is not mounted to $HUGETLBFSPATH"
    fi
    local HUGETLBBLKSIZE=$(stat -f -c "%S" "$HUGETLBFSPATH")
    HUGETLBBLKSIZE=$(( ${HUGETLBBLKSIZE:-0} / 1024 ))
    if test "$HUGETLBBLKSIZE" -lt 1 -o ! -e  "/sys/kernel/mm/hugepages/hugepages-${HUGETLBBLKSIZE}kB" ; then
	cleanup_and_exit 3 "could not determine hugetlbfs block size"
    fi
    local PAGES_FREE=$(cat /sys/kernel/mm/hugepages/hugepages-${HUGETLBBLKSIZE}kB/free_hugepages)
    local PAGES_REQ=$(( ${VM_MEMSIZE:-64} * 1024 / $HUGETLBBLKSIZE ))
    if test "$PAGES_FREE" -lt "$PAGES_REQ" ; then
	echo "expected $PAGES_REQ to be available (have $PAGES_FREE)"
	echo "please adjust nr_hugepages"
	cleanup_and_exit 3
    fi
}

vm_verify_options_kvm() {
    if test -n "$KILL" -o -n "$DO_WIPE" ; then
	return
    fi  

    vm_kernel=
    vm_initrd=
    
    # newer Ubuntu versions have only kvm executable
    if test -x "/usr/bin/kvm" -a ! -x "$kvm_bin"; then
	kvm_bin="/usr/bin/kvm"
    fi

    # overwrite some options for specific host architectures
    case `uname -m` in
	armv7l)
	    kvm_bin="/usr/bin/qemu-system-arm"
	    kvm_console=ttyAMA0
	    kvm_options="-enable-kvm -M virt -cpu host"
	    vm_kernel=/boot/zImage
	    vm_initrd=/boot/initrd
	    # prefer the guest kernel/initrd
	    test -e /boot/zImage.guest && vm_kernel=/boot/zImage.guest
	    test -e /boot/initrd.guest && vm_initrd=/boot/initrd.guest
	    kvm_device=virtio-blk-device
	    kvm_rng_device=virtio-rng-device
	    ;;
	armv8l|aarch64)
	    kvm_bin="/usr/bin/qemu-system-aarch64"
	    kvm_console=ttyAMA0
	    vm_kernel=/boot/Image
	    vm_initrd=/boot/initrd
            if test "${BUILD_ARCH#aarch}" != "$BUILD_ARCH" -o "${BUILD_ARCH#armv8}" != "$BUILD_ARCH"; then
		kvm_options="-enable-kvm -cpu host"
		test -e /boot/Image.guest && vm_kernel=/boot/Image.guest
		test -e /boot/initrd.guest && vm_initrd=/boot/initrd.guest
	    else
		# Running an armv7 kernel on aarch64
		kvm_options="-enable-kvm -cpu host,aarch64=off"
		# prefer the guest kernel/initrd
		test -e /boot/Image.guest32 && vm_kernel=/boot/Image.guest32
		test -e /boot/initrd.guest32 && vm_initrd=/boot/initrd.guest32
	    fi
	    # This option only exists with QEMU 2.5 or newer
	    if $kvm_bin -machine 'virt,?' 2>&1 | grep -q gic-version ; then
		# We want to use the host gic version in order to make use
		# of all available features (e.g. more than 8 CPUs) and avoid
		# the emulation overhead of vGICv2 on a GICv3 host.
		kvm_options="$kvm_options -M virt,gic-version=host"
	    else
		kvm_options="$kvm_options -M virt"
	    fi
	    kvm_device=virtio-blk-device
	    kvm_rng_device=virtio-rng-device
	    ;;
	ppc|ppcle|ppc64|ppc64le)
	    kvm_bin="/usr/bin/qemu-system-ppc64"
	    kvm_console=hvc0
	    kvm_options="-enable-kvm -M pseries"
	    grep -q PPC970MP /proc/cpuinfo && kvm_check_ppc970
	    vm_kernel=/boot/vmlinux
	    vm_initrd=/boot/initrd
	    if test "$BUILD_ARCH" = ppc64le -a -e /boot/vmlinuxle ; then
		vm_kernel=/boot/vmlinuxle
		vm_initrd=/boot/initrdle
	    fi
	    if test -e /boot/vmlinuxbe -a -e /boot/initrdbe ; then
	        if test "$BUILD_ARCH" = ppc -o "$BUILD_ARCH" = ppc64 ; then
		    vm_kernel=/boot/vmlinuxbe
		    vm_initrd=/boot/initrdbe
	        fi
	    fi
	    grep -q "pSeries" /proc/cpuinfo && kvm_device=scsi-hd	# no virtio on pSeries
	    grep -q "PowerNV" /proc/cpuinfo || kvm_device=scsi-hd	# no virtio on ppc != power7 yet
	    ;;
	s390|s390x)
	    kvm_bin="/usr/bin/qemu-system-s390x"
	    kvm_options="-enable-kvm"
	    kvm_console=hvc0
	    vm_kernel=/boot/image
	    vm_initrd=/boot/initrd
	    kvm_device=virtio-blk-ccw
	    kvm_serial_device=virtio-serial-ccw
	    kvm_rng_device=virtio-rng-ccw
	    ;;
    esac

    # check if we can run kvm
    if ! test -r /dev/kvm -a -x "$kvm_bin" ; then
	echo "host does not support kvm"
	echo "either the kvm kernel-module is not loaded or kvm is not installed or hardware virtualization is deactivated in the BIOS."
	cleanup_and_exit 3
    fi

    # check hugepages
    test -n "$HUGETLBFSPATH" -a "$VM_TYPE" = kvm && kvm_check_hugetlb

    # set kernel
    test -n "$VM_KERNEL" && vm_kernel="$VM_KERNEL"
    test -z "$vm_kernel" && vm_kernel=/boot/vmlinuz

    # set initrd
    test -n "$VM_INITRD" && vm_initrd="$VM_INITRD"
    if test -z "$vm_initrd" ; then
	# find a nice default
	if test -e "/boot/initrd-build" ; then
	    vm_initrd="/boot/initrd-build"
	elif test -e "/boot/initrd-virtio" ; then
	    vm_initrd="/boot/initrd-virtio"
	else
	    vm_initrd="/boot/initrd"
	    kvm_device=ide-hd
	    # use /etc/sysconfig/kernel as indication if we have virtio
	    if test -e /etc/sysconfig/kernel ; then
		local im=$(INITRD_MODULES=; . /etc/sysconfig/kernel; echo "$INITRD_MODULES")
		if test "$im" != "${im/virtio/}" ; then
		    kvm_device=virtio-blk-pci
		fi
	    fi
	fi
    fi

    case $kvm_device in
	virtio*)
	    VM_ROOTDEV=/dev/disk/by-id/virtio-0
	    VM_SWAPDEV=/dev/disk/by-id/virtio-1
	    ;;
	*)
	    VM_ROOTDEV=/dev/sda
	    VM_SWAPDEV=/dev/sdb
	    ;;
    esac

    if test -n "$VM_NETOPT" -o -n "$VM_NETDEVOPT" ; then
        if test -n "$VM_NETOPT" ; then
           for item in "${VM_NETOPT[@]}" ; do
              kvm_options="$kvm_options -net $item"
           done
        fi
        if test -n "$VM_NETDEVOPT" ; then
           for item in "${VM_NETDEVOPT[@]}" ; do
              kvm_options="$kvm_options -netdev $item"
           done
        fi
    fi

    if test -n "$VM_DEVICEOPT" ; then
        for item in "${VM_DEVICEOPT[@]}" ; do
            kvm_options="$kvm_options -device $item"
        done
    fi

    if test -n "$kvm_rng_device" ; then
        if test -c /dev/hwrng &&
	    test -f /sys/class/misc/hw_random/rng_current &&
	    test "$(cat /sys/class/misc/hw_random/rng_current)" != none; then
            rng_dev="/dev/hwrng"
        else
            rng_dev="/dev/random"
        fi
        kvm_options="$kvm_options -object rng-random,filename=$rng_dev,id=rng0 -device $kvm_rng_device,rng=rng0"
    fi
}

vm_startup_kvm() {
    qemu_bin="$kvm_bin"
    qemu_args=(-drive file="$VM_ROOT",format=raw,if=none,id=disk,serial=0,cache=unsafe -device "$kvm_device",drive=disk)
    if [ -n "$VM_USER" ] ; then
	getent passwd "$VM_USER" > /dev/null || cleanup_and_exit 3 "cannot find KVM user '$VM_USER'"
    else
	# use qemu user by default if available
	getent passwd qemu >/dev/null && VM_USER=qemu
    fi
    [ -n "$VM_USER" ] && kvm_options="$kvm_options -runas $VM_USER"
    if test -n "$VM_SWAP" ; then
	qemu_args=("${qemu_args[@]}" -drive file="$VM_SWAP",format=raw,if=none,id=swap,serial=1,cache=unsafe -device "$kvm_device",drive=swap)
    fi
    # the serial console device needs to be compiled into the target kernel
    # which is why we can not use virtio-serial on other platforms
    if test -n "$kvm_serial_device" ; then
	if test -n "$VM_CONSOLE_INPUT" ; then
	    qemu_args=("${qemu_args[@]}" -device "$kvm_serial_device" -device virtconsole,chardev=virtiocon0 -chardev stdio,mux=on,id=virtiocon0 -mon chardev=virtiocon0)
	else
	    qemu_args=("${qemu_args[@]}" -device "$kvm_serial_device" -device virtconsole,chardev=virtiocon0 -chardev stdio,id=virtiocon0)
	fi
    elif test -n "$VM_CONSOLE_INPUT" ; then
	qemu_args=("${qemu_args[@]}" -serial mon:stdio)
    else
        if ! test -e "${VM_ROOT}.qemu/monitor"; then
          mkdir -p "${VM_ROOT}.qemu"
          mkfifo "${VM_ROOT}.qemu/monitor"
          chown "$VM_USER" "${VM_ROOT}.qemu"
        fi
	qemu_args=("${qemu_args[@]}" -serial stdio -chardev socket,id=monitor,server,nowait,path="${VM_ROOT}.qemu/monitor" -mon chardev=monitor,mode=readline)
    fi

    if test -n "$BUILD_JOBS" -a "$icecream" = 0 -a -z "$BUILD_THREADS" ; then
	qemu_args=("${qemu_args[@]}" "-smp" "$BUILD_JOBS")
    elif test -n "$BUILD_JOBS" -a -n "$BUILD_THREADS" ; then
	qemu_args=("${qemu_args[@]}" "-smp" "$BUILD_JOBS,threads=$BUILD_THREADS")
    fi
    if test "$VM_TYPE" = kvm ; then
	test "$kvm_console" != ttyAMA0 && kvm_options="$kvm_options -cpu host"
	test -n "$HUGETLBFSPATH" && kvm_options="$kvm_options -mem-prealloc -mem-path $HUGETLBFSPATH"
    fi
    qemu_append="root=$VM_ROOTDEV"
    if test -n "$VMDISK_FILESYSTEM" ; then
        qemu_append="$qemu_append rootfstype=$VMDISK_FILESYSTEM"
    fi
    if test -n "$VMDISK_MOUNT_OPTIONS" ; then
        qemu_append="$qemu_append rootflags=${VMDISK_MOUNT_OPTIONS#-o }"
    fi
    qemu_append="$qemu_append $vm_linux_kernel_parameter"
    qemu_append="$qemu_append panic=1 quiet no-kvmclock elevator=noop"
    qemu_append="$qemu_append nmi_watchdog=0 rw rd.driver.pre=binfmt_misc"
    qemu_append="$qemu_append console=$kvm_console init=$vm_init_script"
    if test -z "$VM_NETOPT" -a -z "$VM_NETDEVOPT"; then
        kvm_options="$kvm_options -net none"
    fi
    if test -n "$VM_TELNET"; then
        kvm_options="$kvm_options -netdev user,id=telnet,hostfwd=tcp:127.0.0.1:$VM_TELNET-:23 -device e1000,netdev=telnet"
    fi
    if test -n "$VM_CUSTOMOPT"; then
        kvm_options="$kvm_options $VM_CUSTOMOPT"
    fi
    set -- $qemu_bin -nodefaults -no-reboot -nographic -vga none $kvm_options \
	-kernel $vm_kernel \
	-initrd $vm_initrd \
	-append "$qemu_append" \
	${VM_MEMSIZE:+-m $VM_MEMSIZE} \
	"${qemu_args[@]}"

    if test "$PERSONALITY" != 0 ; then
	# have to switch back to PER_LINUX to make qemu work
	set -- linux64 "$@"
    fi
    export QEMU_AUDIO_DRV=none		# we do not want to have sound inside the VMs
    echo "$@"
    "$@"
    qemu_ret=$?
    test "$qemu_ret" = "137" && cleanup_and_exit 3 "qemu got SIGKILL"
}

vm_kill_kvm() {
    if ! fuser -k -TERM "$VM_ROOT" ; then
	echo "could not kill build in $VM_ROOT, kvm instance is dead already"
    fi
}

vm_fixup_kvm() {
    # check if we will use a kernel from the build root, in this case
    # we assume the kernel does virtio
    if test -z "$VM_KERNEL" -a -e "$BUILD_ROOT/.build.kernel.$VM_TYPE" ; then
	# ide-hd is the non-virtio default
	if test "$kvm_device" = ide-hd ; then
	    kvm_device=virtio-blk-pci
	    VM_ROOTDEV=/dev/disk/by-id/virtio-0
	    VM_SWAPDEV=/dev/disk/by-id/virtio-1
	fi
    fi
}

vm_attach_root_kvm() {
    :
}

vm_attach_swap_kvm() {
    :
}

vm_detach_root_kvm() {
    :
}

vm_detach_swap_kvm() {
    :
}

vm_cleanup_kvm() {
    :
}

vm_sysrq_kvm() {
    perl -e 'use Socket; socket(SOCK, PF_UNIX, SOCK_STREAM, 0) || die("socket: $!\n"); 
             connect(SOCK, sockaddr_un("'"$VM_ROOT.qemu/monitor"'")) || die("connect: $!\n");
             print SOCK "sendkey alt-print-'$1'\n";'
}

vm_wipe_kvm() {
    :
}