> I've submitted these before, and there were no comments. Any
> suggestions for addition tests on the balloon driver would be
> appreciated. Here it is again as a patch putting them under
> /tools/tests/balloon.
Unrelated, but are we going to move /proc/xen/balloon to somewhere under
/sys e.g. /sys/xen/mem_target or something?
Ian
> --
> Thanks,
> Paul Larson
> plars@xxxxxxxxxxxxxxxxxxxx
> http://www.linuxtestproject.org
>
> # HG changeset patch
> # User root@xxxxxxxxxxxxxxxxxxxxxxxx
> # Node ID fa47e95d40dc1cd96ff54555284efd60bbdd6406
> # Parent b63577ff53a3161ac73b55e0aa87803e76c8bde5
> Add simple set of tests for balloon driver
>
> These can be executed individually, or with make check from
> the balloon directory. The ballon06 test is skipped in make
> check for the time being, and has a big warning and 10 second
> delay when you run it standalone since it exposes the system
> hang bug described in bug #145.
>
> Signed-off-by: Paul Larson <pl@xxxxxxxxxx>
>
> diff -r b63577ff53a3 -r fa47e95d40dc tools/tests/balloon/Makefile
> --- /dev/null Fri Aug 5 14:57:43 2005
> +++ b/tools/tests/balloon/Makefile Fri Aug 5 16:57:07 2005
> @@ -0,0 +1,27 @@
> +CFLAGS=-g -Wall -Werror
> +
> +PROGS=balloon07 balloon08 balloon09 memsteal
> +
> +#balloon06 is left out on purpose due to a known, fatal bug
> +TESTS=balloon01 balloon02 balloon03 balloon04 balloon05 balloon07 \
> + balloon08 balloon09
> +
> +all: $(PROGS)
> +
> +balloon07: balloon07.o
> +balloon08: balloon08.o
> +balloon09: balloon09.o
> +memsteal: memsteal.o
> +
> +clean:
> + $(RM) *.o $(PROGS)
> +
> +check: all
> + for test in $(TESTS); do ./$$test; done
> +
> +%.o: %.c
> + $(CC) -c $(CFLAGS) -o $@ $^
> +
> +%: %.o
> + $(CC) -o $@ $(LDFLAGS) $^ $(LDLIBS)
> +
> diff -r b63577ff53a3 -r fa47e95d40dc tools/tests/balloon/balloon01
> --- /dev/null Fri Aug 5 14:57:43 2005
> +++ b/tools/tests/balloon/balloon01 Fri Aug 5 16:57:07 2005
> @@ -0,0 +1,31 @@
> +#!/bin/bash
> +
> +#
> +# Copyright (c) International Business Machines Corp., 2005 # This
> +program is free software; you can redistribute it and/or
> modify # it
> +under the terms of the GNU General Public License as
> published by # the
> +Free Software Foundation; either version 2 of the License, or # (at
> +your option) any later version.
> +#
> +# 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; if not, write to the Free Software #
> +Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
> USA
> +#
> +# Test name: balloon01
> +# Author: Paul Larson <pl@xxxxxxxxxx>
> +# Description: Test read from /proc/xen/balloon
> +
> +TESTNAME=balloon01
> +
> +cat /proc/xen/balloon &> /dev/null
> +if [ $? == 0 ]
> +then
> + echo "$TESTNAME PASS: read from /proc/xen/balloon"
> +else
> + echo "$TESTNAME FAIL: read from /proc/xen/balloon"
> +fi
> diff -r b63577ff53a3 -r fa47e95d40dc tools/tests/balloon/balloon02
> --- /dev/null Fri Aug 5 14:57:43 2005
> +++ b/tools/tests/balloon/balloon02 Fri Aug 5 16:57:07 2005
> @@ -0,0 +1,43 @@
> +#!/bin/bash
> +
> +#
> +# Copyright (c) International Business Machines Corp., 2005 # This
> +program is free software; you can redistribute it and/or
> modify # it
> +under the terms of the GNU General Public License as
> published by # the
> +Free Software Foundation; either version 2 of the License, or # (at
> +your option) any later version.
> +#
> +# 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; if not, write to the Free Software #
> +Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
> USA
> +#
> +# Test name: balloon02
> +# Author: Paul Larson <pl@xxxxxxxxxx>
> +# Description: Echo a number higher than current requested allocation
> to
> +# /proc/xen/balloon, cat balloon and see that requested
> +# target changed.
> +
> +TESTNAME=balloon02
> +
> +#Units seem to currently be in kB
> +old_alloc=`cat /proc/xen/balloon |grep Requested |awk -F ' +' '{print
> $3}'`
> +
> +new_alloc=$(( $old_alloc + 4096 ))
> +echo $[new_alloc]K > /proc/xen/balloon
> +check_alloc=`cat /proc/xen/balloon |grep Requested |awk -F '
> +' '{print
> $3}'`
> +
> +#cleanup before checking the value and exiting echo $[old_alloc]K >
> +/proc/xen/balloon
> +
> +if [ $check_alloc == $new_alloc ]
> +then
> + echo "$TESTNAME PASS: Requested allocation increased
> from $old_alloc"\
> + "kB to $new_alloc kB"
> +else
> + echo "$TESTNAME FAIL: increase Requested allocation by 4k"
> +fi
> diff -r b63577ff53a3 -r fa47e95d40dc tools/tests/balloon/balloon03
> --- /dev/null Fri Aug 5 14:57:43 2005
> +++ b/tools/tests/balloon/balloon03 Fri Aug 5 16:57:07 2005
> @@ -0,0 +1,43 @@
> +#!/bin/bash
> +
> +#
> +# Copyright (c) International Business Machines Corp., 2005 # This
> +program is free software; you can redistribute it and/or
> modify # it
> +under the terms of the GNU General Public License as
> published by # the
> +Free Software Foundation; either version 2 of the License, or # (at
> +your option) any later version.
> +#
> +# 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; if not, write to the Free Software #
> +Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
> USA
> +#
> +# Test name: balloon03
> +# Author: Paul Larson <pl@xxxxxxxxxx>
> +# Description: Echo a number lower than current requested allocation
> to
> +# /proc/xen/balloon, cat balloon and see that requested
> +# target changed.
> +
> +TESTNAME=balloon03
> +
> +#Units seem to currently be in kB
> +old_alloc=`cat /proc/xen/balloon |grep Requested |awk -F ' +' '{print
> $3}'`
> +
> +new_alloc=$(( $old_alloc - 4096 ))
> +echo $[new_alloc]K > /proc/xen/balloon
> +check_alloc=`cat /proc/xen/balloon |grep Requested |awk -F '
> +' '{print
> $3}'`
> +
> +#cleanup before checking the value and exiting echo $[old_alloc]K >
> +/proc/xen/balloon
> +
> +if [ $check_alloc == $new_alloc ]
> +then
> + echo "$TESTNAME PASS: Requested allocation decreased
> from $old_alloc"\
> + "kB to $new_alloc kB"
> +else
> + echo "$TESTNAME FAIL: decrease Requested allocation by 4k"
> +fi
> diff -r b63577ff53a3 -r fa47e95d40dc tools/tests/balloon/balloon04
> --- /dev/null Fri Aug 5 14:57:43 2005
> +++ b/tools/tests/balloon/balloon04 Fri Aug 5 16:57:07 2005
> @@ -0,0 +1,42 @@
> +#!/bin/bash
> +
> +#
> +# Copyright (c) International Business Machines Corp., 2005 # This
> +program is free software; you can redistribute it and/or
> modify # it
> +under the terms of the GNU General Public License as
> published by # the
> +Free Software Foundation; either version 2 of the License, or # (at
> +your option) any later version.
> +#
> +# 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; if not, write to the Free Software #
> +Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
> USA
> +#
> +# Test name: balloon04
> +# Author: Paul Larson <pl@xxxxxxxxxx>
> +# Description: Allocate some memory for the domain, then use
> +# /proc/xen/balloon to reduce available memory to less
> than
> +# what is allocated
> +
> +TESTNAME=balloon04
> +
> +old_alloc=`cat /proc/xen/balloon |grep Requested |awk -F ' +' '{print
> $3}'`
> +
> +#Allocating 128 MB, reducing memory to 120 MB new_alloc=$((
> 120 * 1024
> +)) ./memsteal 128& cpid=$!
> +sleep 2
> +
> +echo $[new_alloc]K > /proc/xen/balloon
> +#wait a moment for it to settle
> +sleep 3
> +echo $[old_alloc]K > /proc/xen/balloon
> +kill $cpid
> +
> +#If you make it this far, the test passed echo "$TESTNAME PASS:
> +Requested allocation reduced to $new_alloc kB"
> diff -r b63577ff53a3 -r fa47e95d40dc tools/tests/balloon/balloon05
> --- /dev/null Fri Aug 5 14:57:43 2005
> +++ b/tools/tests/balloon/balloon05 Fri Aug 5 16:57:07 2005
> @@ -0,0 +1,45 @@
> +#!/bin/bash
> +
> +#
> +# Copyright (c) International Business Machines Corp., 2005 # This
> +program is free software; you can redistribute it and/or
> modify # it
> +under the terms of the GNU General Public License as
> published by # the
> +Free Software Foundation; either version 2 of the License, or # (at
> +your option) any later version.
> +#
> +# 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; if not, write to the Free Software #
> +Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
> USA
> +#
> +# Test name: balloon05
> +# Author: Paul Larson <pl@xxxxxxxxxx>
> +# Description: Try to give /proc/xen/balloon a value larger than the
> +# available RAM in the system.
> +
> +TESTNAME=balloon05
> +
> +#Units seem to currently be in kB
> +old_alloc=`cat /proc/xen/balloon |grep Requested |awk -F ' +' '{print
> $3}'`
> +
> +#If you have more than 70GB, either change this number or
> take some of
> that
> +#out and send it my way :)
> +new_alloc=73400320
> +
> +echo $[new_alloc]K > /proc/xen/balloon
> +check_alloc=`cat /proc/xen/balloon |grep Requested |awk -F '
> +' '{print
> $3}'`
> +
> +#cleanup before checking the value and exiting echo $[old_alloc]K >
> +/proc/xen/balloon
> +
> +if [ $check_alloc == $new_alloc ]
> +then
> + echo "$TESTNAME PASS: Requested alloc. increased from
> $old_alloc"\
> + "kB to $new_alloc kB"
> +else
> + echo "$TESTNAME FAIL: increase Requested allocation to 70GB"
> +fi
> diff -r b63577ff53a3 -r fa47e95d40dc tools/tests/balloon/balloon06
> --- /dev/null Fri Aug 5 14:57:43 2005
> +++ b/tools/tests/balloon/balloon06 Fri Aug 5 16:57:07 2005
> @@ -0,0 +1,39 @@
> +#!/bin/bash
> +
> +#
> +# Copyright (c) International Business Machines Corp., 2005 # This
> +program is free software; you can redistribute it and/or
> modify # it
> +under the terms of the GNU General Public License as
> published by # the
> +Free Software Foundation; either version 2 of the License, or # (at
> +your option) any later version.
> +#
> +# 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; if not, write to the Free Software #
> +Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
> USA
> +#
> +# Test name: balloon06
> +# Author: Paul Larson <pl@xxxxxxxxxx>
> +# Description: Try to give /proc/xen/balloon a value way too
> low, such
> as 4k
> +#
> +# Warning: Known to crash at the time this was written
> +
> +TESTNAME=balloon06
> +
> +old_alloc=`cat /proc/xen/balloon |grep Requested |awk -F ' +' '{print
> $3}'`
> +new_alloc=4
> +
> +echo
> '*************************************************************
> *********'
> +echo '* Warning!!! About to run a test that is known to hang or crash
> *'
> +echo '* the system! Abort now, echo if you wish, sleeping for 10
> seconds. *'
> +echo
> '*************************************************************
> *********'
> +sleep 10
> +
> +echo $[new_alloc]K > /proc/xen/balloon
> +sleep 3
> +echo $[old_alloc]K > /proc/xen/balloon
> +echo "$TESTNAME PASS: Requested allocation reduced to $new_alloc kB"
> diff -r b63577ff53a3 -r fa47e95d40dc tools/tests/balloon/balloon07.c
> --- /dev/null Fri Aug 5 14:57:43 2005
> +++ b/tools/tests/balloon/balloon07.c Fri Aug 5 16:57:07 2005
> @@ -0,0 +1,68 @@
> +/*
> + *
> + * Copyright (c) International Business Machines Corp., 2005
> + * This program is free software; you can redistribute it and/or
> modify
> + * it under the terms of the GNU General Public License as
> published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * 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; if not, write to the Free Software
> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
> 02111-1307
> USA
> + *
> + * Test name: balloon07
> + * Author: Paul Larson <pl@xxxxxxxxxx>
> + * Description: Open /proc/xen/balloon as non-root user,
> expect -EACCES
> + */
> +
> +#include <errno.h>
> +#include <fcntl.h>
> +#include <pwd.h>
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <string.h>
> +#include <unistd.h>
> +#include <sys/types.h>
> +#include <sys/stat.h>
> +
> +#define TESTNAME "balloon07"
> +
> +int main(void)
> +{
> + int fd;
> + int err;
> + char username[] = "nobody";
> + struct passwd *user;
> +
> + user = getpwnam(username);
> +
> + if (setreuid(user->pw_uid, user->pw_uid) == -1) {
> + printf("%s FAIL: setreuid(): %s\n",TESTNAME,
> strerror(errno));
> + exit(1);
> + }
> +
> + fd = open("/proc/xen/balloon", O_RDWR);
> + err = errno;
> + if (fd != -1) {
> + printf("%s FAIL: Write to /proc/xen/balloon as
> non-root "
> + "user succeeded\n", TESTNAME);
> + close(fd);
> + exit(1);
> + }
> + if (err != 13) {
> + printf("%s FAIL: Write to /proc/xen/balloon as
> non-root "
> + "got errno %d, expected 13\n", TESTNAME, err);
> + close(fd);
> + exit(1);
> + }
> + printf("%s PASS: Write to /proc/xen/balloon as non-root
> user failed "
> + "with -EACCES\n", TESTNAME);
> + close(fd);
> + exit(0);
> +}
> +
> diff -r b63577ff53a3 -r fa47e95d40dc tools/tests/balloon/balloon08.c
> --- /dev/null Fri Aug 5 14:57:43 2005
> +++ b/tools/tests/balloon/balloon08.c Fri Aug 5 16:57:07 2005
> @@ -0,0 +1,64 @@
> +/*
> + *
> + * Copyright (c) International Business Machines Corp., 2005
> + * This program is free software; you can redistribute it and/or
> modify
> + * it under the terms of the GNU General Public License as
> published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * 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; if not, write to the Free Software
> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
> 02111-1307
> USA
> + *
> + * Test name: balloon08
> + * Author: Paul Larson <pl@xxxxxxxxxx>
> + * Description: Write 1 byte to /proc/xen/balloon, expect -EBADMSG */
> +
> +#include <errno.h>
> +#include <fcntl.h>
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <string.h>
> +#include <unistd.h>
> +#include <sys/types.h>
> +#include <sys/stat.h>
> +
> +#define TESTNAME "balloon08"
> +
> +int main(void)
> +{
> + int fd;
> + int ret, err;
> +
> + fd = open("/proc/xen/balloon", O_RDWR);
> + if (fd == -1) {
> + printf("%s FAIL: failed to open
> /proc/xen/balloon, %s\n",
> + TESTNAME, strerror(errno));
> + exit(1);
> + }
> + ret = write(fd, "a", 1);
> + err = errno;
> + if (ret != -1) {
> + printf("%s FAIL: Write 1 byte to
> /proc/xen/balloon succeeded\n",
> + TESTNAME);
> + close(fd);
> + exit(1);
> + }
> + if (err != 74) {
> + printf("%s FAIL: Write 1 byte got errno %d,
> expected 74\n",
> + TESTNAME, err);
> + close(fd);
> + exit(1);
> + }
> + printf("%s PASS: Write 1 byte failed with -EBADMSG\n",
> + TESTNAME);
> + close(fd);
> + exit(0);
> +}
> +
> diff -r b63577ff53a3 -r fa47e95d40dc tools/tests/balloon/balloon09.c
> --- /dev/null Fri Aug 5 14:57:43 2005
> +++ b/tools/tests/balloon/balloon09.c Fri Aug 5 16:57:07 2005
> @@ -0,0 +1,70 @@
> +/*
> + *
> + * Copyright (c) International Business Machines Corp., 2005
> + * This program is free software; you can redistribute it and/or
> modify
> + * it under the terms of the GNU General Public License as
> published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * 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; if not, write to the Free Software
> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
> 02111-1307
> USA
> + *
> + * Test name: balloon09
> + * Author: Paul Larson <pl@xxxxxxxxxx>
> + * Description: Write >64 bytes to /proc/xen/balloon, expect
> -EFBIG */
> +
> +#include <errno.h>
> +#include <fcntl.h>
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <string.h>
> +#include <unistd.h>
> +#include <sys/types.h>
> +#include <sys/stat.h>
> +
> +#define TESTNAME "balloon09"
> +#define STRSIZE 100
> +
> +int main(void)
> +{
> + int fd;
> + int ret, err, i;
> + char str[STRSIZE];
> +
> + for(i=0;i<64;i++) {
> + *(str + i) = 'a';
> + }
> +
> + fd = open("/proc/xen/balloon", O_RDWR);
> + if (fd == -1) {
> + printf("%s FAIL: failed to open
> /proc/xen/balloon, %s\n",
> + TESTNAME, strerror(errno));
> + exit(1);
> + }
> + ret = write(fd, str, sizeof(str));
> + err = errno;
> + if (ret != -1) {
> + printf("%s FAIL: Write 1 byte to
> /proc/xen/balloon succeeded\n",
> + TESTNAME);
> + close(fd);
> + exit(1);
> + }
> + if (err != 27) {
> + printf("%s FAIL: Write 1 byte got errno %d,
> expected 27\n",
> + TESTNAME, err);
> + close(fd);
> + exit(1);
> + }
> + printf("%s PASS: Write 1 byte failed with -EFBIG as expected\n",
> + TESTNAME);
> + close(fd);
> + exit(0);
> +}
> +
> diff -r b63577ff53a3 -r fa47e95d40dc tools/tests/balloon/memsteal.c
> --- /dev/null Fri Aug 5 14:57:43 2005
> +++ b/tools/tests/balloon/memsteal.c Fri Aug 5 16:57:07 2005
> @@ -0,0 +1,52 @@
> +/*
> + *
> + * Copyright (c) International Business Machines Corp., 2005
> + * This program is free software; you can redistribute it and/or
> modify
> + * it under the terms of the GNU General Public License as
> published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * 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; if not, write to the Free Software
> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
> 02111-1307
> USA
> + *
> + * Test name: memsteal
> + * Author: Paul Larson <pl@xxxxxxxxxx>
> + * Description: simple memory allocator */
> +
> +#include <errno.h>
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <unistd.h>
> +#include <sys/mman.h>
> +
> +int main(int argc, char **argv)
> +{
> + int i;
> + size_t memsize;
> + char *chunk;
> +
> + if (argc != 2) {
> + printf("usage: memsteal [Memory in MB]\n"
> + "Allocates given amount of memory,
> touches the pages,\n"
> + "and waits for a signal to exit.\n\n");
> + exit(1);
> + }
> + memsize = atol(argv[1]) * 1024 * 1024;
> + chunk = mmap(0, memsize, PROT_WRITE,
> MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
> + if (chunk == NULL) {
> + perror("mmap()");
> + exit(1);
> + }
> + for(i=0;i<memsize;i+=4096) {
> + chunk[i]='a';
> + }
> + pause();
> + exit(0);
> +}
>
>
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