[libvirt] [PATCH] virtlogd: make max file size & number of backups configurable
Daniel P. Berrange
berrange at redhat.com
Fri Jul 1 16:43:48 UTC 2016
Currently virtlogd has a hardcoded max file size of 128kb
and max of 3 backups. This adds two new config parameters
to /etc/libvirt/virtlogd.conf to let these be customized.
Signed-off-by: Daniel P. Berrange <berrange at redhat.com>
---
src/logging/log_daemon.c | 17 +++++++++++++----
src/logging/log_daemon_config.c | 5 +++++
src/logging/log_daemon_config.h | 3 +++
src/logging/log_handler.c | 27 ++++++++++++++++++---------
src/logging/log_handler.h | 4 ++++
src/logging/test_virtlogd.aug.in | 4 ++++
src/logging/virtlogd.aug | 2 ++
src/logging/virtlogd.conf | 8 ++++++++
8 files changed, 57 insertions(+), 13 deletions(-)
diff --git a/src/logging/log_daemon.c b/src/logging/log_daemon.c
index 9f71ca9..80e75bf 100644
--- a/src/logging/log_daemon.c
+++ b/src/logging/log_daemon.c
@@ -165,6 +165,8 @@ virLogDaemonNew(virLogDaemonConfigPtr config, bool privileged)
goto error;
if (!(logd->handler = virLogHandlerNew(privileged,
+ config->max_size,
+ config->max_backups,
virLogDaemonInhibitor,
logd)))
goto error;
@@ -185,7 +187,8 @@ virLogDaemonGetHandler(virLogDaemonPtr dmn)
static virLogDaemonPtr
-virLogDaemonNewPostExecRestart(virJSONValuePtr object, bool privileged)
+virLogDaemonNewPostExecRestart(virJSONValuePtr object, bool privileged,
+ virLogDaemonConfigPtr config)
{
virLogDaemonPtr logd;
virJSONValuePtr child;
@@ -226,6 +229,8 @@ virLogDaemonNewPostExecRestart(virJSONValuePtr object, bool privileged)
if (!(logd->handler = virLogHandlerNewPostExecRestart(child,
privileged,
+ config->max_size,
+ config->max_backups,
virLogDaemonInhibitor,
logd)))
goto error;
@@ -717,7 +722,8 @@ static int
virLogDaemonPostExecRestart(const char *state_file,
const char *pid_file,
int *pid_file_fd,
- bool privileged)
+ bool privileged,
+ virLogDaemonConfigPtr config)
{
const char *gotmagic;
char *wantmagic = NULL;
@@ -766,7 +772,9 @@ virLogDaemonPostExecRestart(const char *state_file,
(*pid_file_fd = virPidFileAcquirePath(pid_file, false, getpid())) < 0)
goto cleanup;
- if (!(logDaemon = virLogDaemonNewPostExecRestart(object, privileged)))
+ if (!(logDaemon = virLogDaemonNewPostExecRestart(object,
+ privileged,
+ config)))
goto cleanup;
ret = 1;
@@ -1086,7 +1094,8 @@ int main(int argc, char **argv) {
if ((rv = virLogDaemonPostExecRestart(state_file,
pid_file,
&pid_file_fd,
- privileged)) < 0) {
+ privileged,
+ config)) < 0) {
ret = VIR_LOG_DAEMON_ERR_INIT;
goto cleanup;
}
diff --git a/src/logging/log_daemon_config.c b/src/logging/log_daemon_config.c
index 9e729fa..b584970 100644
--- a/src/logging/log_daemon_config.c
+++ b/src/logging/log_daemon_config.c
@@ -128,6 +128,8 @@ virLogDaemonConfigNew(bool privileged ATTRIBUTE_UNUSED)
return NULL;
data->max_clients = 1024;
+ data->max_size = 128 * 1024;
+ data->max_backups = 3;
return data;
}
@@ -154,6 +156,9 @@ virLogDaemonConfigLoadOptions(virLogDaemonConfigPtr data,
GET_CONF_STR(conf, filename, log_outputs);
GET_CONF_UINT(conf, filename, max_clients);
+ GET_CONF_UINT(conf, filename, max_size);
+ GET_CONF_UINT(conf, filename, max_backups);
+
return 0;
error:
diff --git a/src/logging/log_daemon_config.h b/src/logging/log_daemon_config.h
index 24cc631..0da7b0b 100644
--- a/src/logging/log_daemon_config.h
+++ b/src/logging/log_daemon_config.h
@@ -34,6 +34,9 @@ struct _virLogDaemonConfig {
char *log_filters;
char *log_outputs;
int max_clients;
+
+ size_t max_backups;
+ size_t max_size;
};
diff --git a/src/logging/log_handler.c b/src/logging/log_handler.c
index a8cb6cf..cd0ba6e 100644
--- a/src/logging/log_handler.c
+++ b/src/logging/log_handler.c
@@ -41,8 +41,6 @@ VIR_LOG_INIT("logging.log_handler");
#define VIR_FROM_THIS VIR_FROM_LOGGING
-#define DEFAULT_FILE_SIZE (128 * 1024)
-#define DEFAULT_MAX_BACKUP 3
#define DEFAULT_MODE 0600
typedef struct _virLogHandlerLogFile virLogHandlerLogFile;
@@ -62,6 +60,9 @@ struct _virLogHandler {
virObjectLockable parent;
bool privileged;
+ size_t max_size;
+ size_t max_backups;
+
virLogHandlerLogFilePtr *files;
size_t nfiles;
@@ -184,6 +185,8 @@ virLogHandlerDomainLogFileEvent(int watch,
virLogHandlerPtr
virLogHandlerNew(bool privileged,
+ size_t max_size,
+ size_t max_backups,
virLogHandlerShutdownInhibitor inhibitor,
void *opaque)
{
@@ -196,6 +199,8 @@ virLogHandlerNew(bool privileged,
goto error;
handler->privileged = privileged;
+ handler->max_size = max_size;
+ handler->max_backups = max_backups;
handler->inhibitor = inhibitor;
handler->opaque = opaque;
@@ -254,8 +259,8 @@ virLogHandlerLogFilePostExecRestart(virLogHandlerPtr handler,
}
if ((file->file = virRotatingFileWriterNew(path,
- DEFAULT_FILE_SIZE,
- DEFAULT_MAX_BACKUP,
+ handler->max_size,
+ handler->max_backups,
false,
DEFAULT_MODE)) == NULL)
goto error;
@@ -283,6 +288,8 @@ virLogHandlerLogFilePostExecRestart(virLogHandlerPtr handler,
virLogHandlerPtr
virLogHandlerNewPostExecRestart(virJSONValuePtr object,
bool privileged,
+ size_t max_size,
+ size_t max_backups,
virLogHandlerShutdownInhibitor inhibitor,
void *opaque)
{
@@ -292,6 +299,8 @@ virLogHandlerNewPostExecRestart(virJSONValuePtr object,
size_t i;
if (!(handler = virLogHandlerNew(privileged,
+ max_size,
+ max_backups,
inhibitor,
opaque)))
return NULL;
@@ -396,8 +405,8 @@ virLogHandlerDomainOpenLogFile(virLogHandlerPtr handler,
goto error;
if ((file->file = virRotatingFileWriterNew(path,
- DEFAULT_FILE_SIZE,
- DEFAULT_MAX_BACKUP,
+ handler->max_size,
+ handler->max_backups,
trunc,
DEFAULT_MODE)) == NULL)
goto error;
@@ -487,7 +496,7 @@ virLogHandlerDomainReadLogFile(virLogHandlerPtr handler,
virObjectLock(handler);
- if (!(file = virRotatingFileReaderNew(path, DEFAULT_MAX_BACKUP)))
+ if (!(file = virRotatingFileReaderNew(path, handler->max_backups)))
goto error;
if (virRotatingFileReaderSeek(file, inode, offset) < 0)
@@ -542,8 +551,8 @@ virLogHandlerDomainAppendLogFile(virLogHandlerPtr handler,
if (!writer) {
if (!(newwriter = virRotatingFileWriterNew(path,
- DEFAULT_FILE_SIZE,
- DEFAULT_MAX_BACKUP,
+ handler->max_size,
+ handler->max_backups,
false,
DEFAULT_MODE)))
goto cleanup;
diff --git a/src/logging/log_handler.h b/src/logging/log_handler.h
index 4607e45..70be567 100644
--- a/src/logging/log_handler.h
+++ b/src/logging/log_handler.h
@@ -34,10 +34,14 @@ typedef void (*virLogHandlerShutdownInhibitor)(bool inhibit,
void *opaque);
virLogHandlerPtr virLogHandlerNew(bool privileged,
+ size_t max_size,
+ size_t max_backups,
virLogHandlerShutdownInhibitor inhibitor,
void *opaque);
virLogHandlerPtr virLogHandlerNewPostExecRestart(virJSONValuePtr child,
bool privileged,
+ size_t max_size,
+ size_t max_backups,
virLogHandlerShutdownInhibitor inhibitor,
void *opaque);
diff --git a/src/logging/test_virtlogd.aug.in b/src/logging/test_virtlogd.aug.in
index b12f676..792a5b8 100644
--- a/src/logging/test_virtlogd.aug.in
+++ b/src/logging/test_virtlogd.aug.in
@@ -2,9 +2,13 @@ module Test_virtlogd =
let conf = "log_level = 3
log_filters=\"3:remote 4:event\"
log_outputs=\"3:syslog:virtlogd\"
+max_size = 131072
+max_backups = 3
"
test Virtlogd.lns get conf =
{ "log_level" = "3" }
{ "log_filters" = "3:remote 4:event" }
{ "log_outputs" = "3:syslog:virtlogd" }
+ { "max_size" = "131072" }
+ { "max_backups" = "3" }
diff --git a/src/logging/virtlogd.aug b/src/logging/virtlogd.aug
index eefba5b..da480fd 100644
--- a/src/logging/virtlogd.aug
+++ b/src/logging/virtlogd.aug
@@ -29,6 +29,8 @@ module Virtlogd =
| str_entry "log_outputs"
| int_entry "log_buffer_size"
| int_entry "max_clients"
+ | int_entry "max_size"
+ | int_entry "max_backups"
(* Each enty in the config is one of the following three ... *)
let entry = logging_entry
diff --git a/src/logging/virtlogd.conf b/src/logging/virtlogd.conf
index abb3633..fbd92ff 100644
--- a/src/logging/virtlogd.conf
+++ b/src/logging/virtlogd.conf
@@ -57,3 +57,11 @@
# The maximum number of concurrent client connections to allow
# over all sockets combined.
#max_clients = 1024
+
+
+# Maximum file size before rolling over. Defaults to 128 KB
+#max_size = 131072
+
+# Maximum number of backup files to keep. Defaults to 3,
+# not including the primary active file
+#max_backups = 3
--
2.7.4
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