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resource-agents/SOURCES/bz2109159-storage_mon-4-fix...

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From 0bb52cf9985bda47e13940761b3d8e2eaddf377c Mon Sep 17 00:00:00 2001
From: Kazunori INOUE <kazunori_inoue@newson.co.jp>
Date: Wed, 10 Aug 2022 17:35:54 +0900
Subject: [PATCH 1/4] storage_mon: Use the O_DIRECT flag in open() to eliminate
cache effects
---
tools/Makefile.am | 1 +
tools/storage_mon.c | 82 +++++++++++++++++++++++++++++++++------------
2 files changed, 61 insertions(+), 22 deletions(-)
diff --git a/tools/Makefile.am b/tools/Makefile.am
index 1309223b4..08323fee3 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -74,6 +74,7 @@ sfex_stat_LDADD = $(GLIBLIB) -lplumb -lplumbgpl
findif_SOURCES = findif.c
storage_mon_SOURCES = storage_mon.c
+storage_mon_CFLAGS = -D_GNU_SOURCE
if BUILD_TICKLE
halib_PROGRAMS += tickle_tcp
diff --git a/tools/storage_mon.c b/tools/storage_mon.c
index 930ead41c..ba87492fc 100644
--- a/tools/storage_mon.c
+++ b/tools/storage_mon.c
@@ -31,23 +31,27 @@ static void usage(char *name, FILE *f)
fprintf(f, " --help print this message\n");
}
-/* Check one device */
-static void *test_device(const char *device, int verbose, int inject_error_percent)
+static int open_device(const char *device, int verbose)
{
- uint64_t devsize;
int device_fd;
int res;
+ uint64_t devsize;
off_t seek_spot;
- char buffer[512];
- if (verbose) {
- printf("Testing device %s\n", device);
+#if defined(__linux__) || defined(__FreeBSD__)
+ device_fd = open(device, O_RDONLY|O_DIRECT);
+ if (device_fd >= 0) {
+ return device_fd;
+ } else if (errno != EINVAL) {
+ fprintf(stderr, "Failed to open %s: %s\n", device, strerror(errno));
+ return -1;
}
+#endif
device_fd = open(device, O_RDONLY);
if (device_fd < 0) {
fprintf(stderr, "Failed to open %s: %s\n", device, strerror(errno));
- exit(-1);
+ return -1;
}
#ifdef __FreeBSD__
res = ioctl(device_fd, DIOCGMEDIASIZE, &devsize);
@@ -57,11 +61,12 @@ static void *test_device(const char *device, int verbose, int inject_error_perce
if (res != 0) {
fprintf(stderr, "Failed to stat %s: %s\n", device, strerror(errno));
close(device_fd);
- exit(-1);
+ return -1;
}
if (verbose) {
fprintf(stderr, "%s: size=%zu\n", device, devsize);
}
+
/* Don't fret about real randomness */
srand(time(NULL) + getpid());
/* Pick a random place on the device - sector aligned */
@@ -70,35 +75,64 @@ static void *test_device(const char *device, int verbose, int inject_error_perce
if (res < 0) {
fprintf(stderr, "Failed to seek %s: %s\n", device, strerror(errno));
close(device_fd);
- exit(-1);
+ return -1;
}
-
if (verbose) {
printf("%s: reading from pos %ld\n", device, seek_spot);
}
+ return device_fd;
+}
+
+/* Check one device */
+static void *test_device(const char *device, int verbose, int inject_error_percent)
+{
+ int device_fd;
+ int sec_size = 0;
+ int res;
+ void *buffer;
+
+ if (verbose) {
+ printf("Testing device %s\n", device);
+ }
+
+ device_fd = open_device(device, verbose);
+ if (device_fd < 0) {
+ exit(-1);
+ }
+
+ ioctl(device_fd, BLKSSZGET, &sec_size);
+ if (sec_size == 0) {
+ fprintf(stderr, "Failed to stat %s: %s\n", device, strerror(errno));
+ goto error;
+ }
- res = read(device_fd, buffer, sizeof(buffer));
+ if (posix_memalign(&buffer, sysconf(_SC_PAGESIZE), sec_size) != 0) {
+ fprintf(stderr, "Failed to allocate aligned memory: %s\n", strerror(errno));
+ goto error;
+ }
+
+ res = read(device_fd, buffer, sec_size);
+ free(buffer);
if (res < 0) {
fprintf(stderr, "Failed to read %s: %s\n", device, strerror(errno));
- close(device_fd);
- exit(-1);
+ goto error;
}
- if (res < (int)sizeof(buffer)) {
- fprintf(stderr, "Failed to read %ld bytes from %s, got %d\n", sizeof(buffer), device, res);
- close(device_fd);
- exit(-1);
+ if (res < sec_size) {
+ fprintf(stderr, "Failed to read %d bytes from %s, got %d\n", sec_size, device, res);
+ goto error;
}
/* Fake an error */
- if (inject_error_percent && ((rand() % 100) < inject_error_percent)) {
- fprintf(stderr, "People, please fasten your seatbelts, injecting errors!\n");
- close(device_fd);
- exit(-1);
+ if (inject_error_percent) {
+ srand(time(NULL) + getpid());
+ if ((rand() % 100) < inject_error_percent) {
+ fprintf(stderr, "People, please fasten your seatbelts, injecting errors!\n");
+ goto error;
+ }
}
res = close(device_fd);
if (res != 0) {
fprintf(stderr, "Failed to close %s: %s\n", device, strerror(errno));
- close(device_fd);
exit(-1);
}
@@ -106,6 +140,10 @@ static void *test_device(const char *device, int verbose, int inject_error_perce
printf("%s: done\n", device);
}
exit(0);
+
+error:
+ close(device_fd);
+ exit(-1);
}
int main(int argc, char *argv[])
From ce4e632f29ed6b86b82a959eac5844655baed153 Mon Sep 17 00:00:00 2001
From: Kazunori INOUE <kazunori_inoue@newson.co.jp>
Date: Mon, 15 Aug 2022 19:17:21 +0900
Subject: [PATCH 2/4] storage_mon: fix build-related issues
---
tools/storage_mon.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/tools/storage_mon.c b/tools/storage_mon.c
index ba87492fc..e34d1975a 100644
--- a/tools/storage_mon.c
+++ b/tools/storage_mon.c
@@ -38,7 +38,6 @@ static int open_device(const char *device, int verbose)
uint64_t devsize;
off_t seek_spot;
-#if defined(__linux__) || defined(__FreeBSD__)
device_fd = open(device, O_RDONLY|O_DIRECT);
if (device_fd >= 0) {
return device_fd;
@@ -46,7 +45,6 @@ static int open_device(const char *device, int verbose)
fprintf(stderr, "Failed to open %s: %s\n", device, strerror(errno));
return -1;
}
-#endif
device_fd = open(device, O_RDONLY);
if (device_fd < 0) {
@@ -100,7 +98,11 @@ static void *test_device(const char *device, int verbose, int inject_error_perce
exit(-1);
}
+#ifdef __FreeBSD__
+ ioctl(device_fd, DIOCGSECTORSIZE, &sec_size);
+#else
ioctl(device_fd, BLKSSZGET, &sec_size);
+#endif
if (sec_size == 0) {
fprintf(stderr, "Failed to stat %s: %s\n", device, strerror(errno));
goto error;
From 7a0aaa0dfdebeab3fae9fe9ddc412c3d1f610273 Mon Sep 17 00:00:00 2001
From: Kazunori INOUE <kazunori_inoue@newson.co.jp>
Date: Wed, 24 Aug 2022 17:36:23 +0900
Subject: [PATCH 3/4] storage_mon: do random lseek even with O_DIRECT, etc
---
tools/storage_mon.c | 118 ++++++++++++++++++++++----------------------
1 file changed, 58 insertions(+), 60 deletions(-)
diff --git a/tools/storage_mon.c b/tools/storage_mon.c
index e34d1975a..0bdb48649 100644
--- a/tools/storage_mon.c
+++ b/tools/storage_mon.c
@@ -31,38 +31,43 @@ static void usage(char *name, FILE *f)
fprintf(f, " --help print this message\n");
}
-static int open_device(const char *device, int verbose)
+/* Check one device */
+static void *test_device(const char *device, int verbose, int inject_error_percent)
{
+ uint64_t devsize;
+ int flags = O_RDONLY | O_DIRECT;
int device_fd;
int res;
- uint64_t devsize;
off_t seek_spot;
- device_fd = open(device, O_RDONLY|O_DIRECT);
- if (device_fd >= 0) {
- return device_fd;
- } else if (errno != EINVAL) {
- fprintf(stderr, "Failed to open %s: %s\n", device, strerror(errno));
- return -1;
+ if (verbose) {
+ printf("Testing device %s\n", device);
}
- device_fd = open(device, O_RDONLY);
+ device_fd = open(device, flags);
if (device_fd < 0) {
- fprintf(stderr, "Failed to open %s: %s\n", device, strerror(errno));
- return -1;
+ if (errno != EINVAL) {
+ fprintf(stderr, "Failed to open %s: %s\n", device, strerror(errno));
+ exit(-1);
+ }
+ flags &= ~O_DIRECT;
+ device_fd = open(device, flags);
+ if (device_fd < 0) {
+ fprintf(stderr, "Failed to open %s: %s\n", device, strerror(errno));
+ exit(-1);
+ }
}
#ifdef __FreeBSD__
res = ioctl(device_fd, DIOCGMEDIASIZE, &devsize);
#else
res = ioctl(device_fd, BLKGETSIZE64, &devsize);
#endif
- if (res != 0) {
+ if (res < 0) {
fprintf(stderr, "Failed to stat %s: %s\n", device, strerror(errno));
- close(device_fd);
- return -1;
+ goto error;
}
if (verbose) {
- fprintf(stderr, "%s: size=%zu\n", device, devsize);
+ printf("%s: opened %s O_DIRECT, size=%zu\n", device, (flags & O_DIRECT)?"with":"without", devsize);
}
/* Don't fret about real randomness */
@@ -72,65 +77,58 @@ static int open_device(const char *device, int verbose)
res = lseek(device_fd, seek_spot, SEEK_SET);
if (res < 0) {
fprintf(stderr, "Failed to seek %s: %s\n", device, strerror(errno));
- close(device_fd);
- return -1;
+ goto error;
}
if (verbose) {
printf("%s: reading from pos %ld\n", device, seek_spot);
}
- return device_fd;
-}
-
-/* Check one device */
-static void *test_device(const char *device, int verbose, int inject_error_percent)
-{
- int device_fd;
- int sec_size = 0;
- int res;
- void *buffer;
-
- if (verbose) {
- printf("Testing device %s\n", device);
- }
- device_fd = open_device(device, verbose);
- if (device_fd < 0) {
- exit(-1);
- }
+ if (flags & O_DIRECT) {
+ int sec_size = 0;
+ void *buffer;
#ifdef __FreeBSD__
- ioctl(device_fd, DIOCGSECTORSIZE, &sec_size);
+ res = ioctl(device_fd, DIOCGSECTORSIZE, &sec_size);
#else
- ioctl(device_fd, BLKSSZGET, &sec_size);
+ res = ioctl(device_fd, BLKSSZGET, &sec_size);
#endif
- if (sec_size == 0) {
- fprintf(stderr, "Failed to stat %s: %s\n", device, strerror(errno));
- goto error;
- }
+ if (res < 0) {
+ fprintf(stderr, "Failed to stat %s: %s\n", device, strerror(errno));
+ goto error;
+ }
- if (posix_memalign(&buffer, sysconf(_SC_PAGESIZE), sec_size) != 0) {
- fprintf(stderr, "Failed to allocate aligned memory: %s\n", strerror(errno));
- goto error;
- }
+ if (posix_memalign(&buffer, sysconf(_SC_PAGESIZE), sec_size) != 0) {
+ fprintf(stderr, "Failed to allocate aligned memory: %s\n", strerror(errno));
+ goto error;
+ }
+ res = read(device_fd, buffer, sec_size);
+ free(buffer);
+ if (res < 0) {
+ fprintf(stderr, "Failed to read %s: %s\n", device, strerror(errno));
+ goto error;
+ }
+ if (res < sec_size) {
+ fprintf(stderr, "Failed to read %d bytes from %s, got %d\n", sec_size, device, res);
+ goto error;
+ }
+ } else {
+ char buffer[512];
- res = read(device_fd, buffer, sec_size);
- free(buffer);
- if (res < 0) {
- fprintf(stderr, "Failed to read %s: %s\n", device, strerror(errno));
- goto error;
- }
- if (res < sec_size) {
- fprintf(stderr, "Failed to read %d bytes from %s, got %d\n", sec_size, device, res);
- goto error;
+ res = read(device_fd, buffer, sizeof(buffer));
+ if (res < 0) {
+ fprintf(stderr, "Failed to read %s: %s\n", device, strerror(errno));
+ goto error;
+ }
+ if (res < (int)sizeof(buffer)) {
+ fprintf(stderr, "Failed to read %ld bytes from %s, got %d\n", sizeof(buffer), device, res);
+ goto error;
+ }
}
/* Fake an error */
- if (inject_error_percent) {
- srand(time(NULL) + getpid());
- if ((rand() % 100) < inject_error_percent) {
- fprintf(stderr, "People, please fasten your seatbelts, injecting errors!\n");
- goto error;
- }
+ if (inject_error_percent && ((rand() % 100) < inject_error_percent)) {
+ fprintf(stderr, "People, please fasten your seatbelts, injecting errors!\n");
+ goto error;
}
res = close(device_fd);
if (res != 0) {
From db97e055a17526cec056c595844a9d8851e3ee19 Mon Sep 17 00:00:00 2001
From: Kazunori INOUE <kazunori_inoue@newson.co.jp>
Date: Thu, 25 Aug 2022 16:03:46 +0900
Subject: [PATCH 4/4] storage_mon: improve error messages when ioctl() fails
---
tools/storage_mon.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/storage_mon.c b/tools/storage_mon.c
index 0bdb48649..f829c5081 100644
--- a/tools/storage_mon.c
+++ b/tools/storage_mon.c
@@ -63,7 +63,7 @@ static void *test_device(const char *device, int verbose, int inject_error_perce
res = ioctl(device_fd, BLKGETSIZE64, &devsize);
#endif
if (res < 0) {
- fprintf(stderr, "Failed to stat %s: %s\n", device, strerror(errno));
+ fprintf(stderr, "Failed to get device size for %s: %s\n", device, strerror(errno));
goto error;
}
if (verbose) {
@@ -93,7 +93,7 @@ static void *test_device(const char *device, int verbose, int inject_error_perce
res = ioctl(device_fd, BLKSSZGET, &sec_size);
#endif
if (res < 0) {
- fprintf(stderr, "Failed to stat %s: %s\n", device, strerror(errno));
+ fprintf(stderr, "Failed to get block device sector size for %s: %s\n", device, strerror(errno));
goto error;
}
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