logs: Do selective logging for errnos

        Backport of http://review.gluster.org/8918
                    http://review.gluster.org/8955

Problem:
Just after replace-brick the mount logs are filled with ENOENT/ESTALE
warning logs because the file is yet to be self-healed now that the
brick is new.

Fix:
Do conditional logging for the logs. ENOENT/ESTALE will be logged at
lower log level. Only when debug logs are enabled, these logs will
be written to the logfile.

Change-Id: If203d09e2479e8c2415ebc14fb79d4fbb81dfc95
BUG: 1155027
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/8957
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>

2 files changed, 41 insertions, 0 deletions

diff --git a/libglusterfs/src/common-utils.c b/libglusterfs/src/common-utils.c
index 2875a304c3e..ef92a8274bc 100644
--- a/libglusterfs/src/common-utils.c
+++ b/libglusterfs/src/common-utils.c
@@ -39,6 +39,7 @@
 #include <sys/sysctl.h>
 #endif
 
+#include "compat-errno.h"
 #include "logging.h"
 #include "common-utils.h"
 #include "revision.h"
@@ -3391,3 +3392,40 @@ gf_backtrace_save (char *buf)
         gf_log (THIS->name, GF_LOG_WARNING, "Failed to save the backtrace.");
         return NULL;
 }
+
+gf_loglevel_t
+fop_log_level (glusterfs_fop_t fop, int op_errno)
+{
+        /* if gfid doesn't exist ESTALE comes */
+        if (op_errno == ENOENT || op_errno == ESTALE)
+                return GF_LOG_DEBUG;
+
+        if ((fop == GF_FOP_ENTRYLK) ||
+            (fop == GF_FOP_FENTRYLK) ||
+            (fop == GF_FOP_FINODELK) ||
+            (fop == GF_FOP_INODELK) ||
+            (fop == GF_FOP_LK)) {
+                /*
+                 * if non-blocking lock fails EAGAIN comes
+                 * if locks xlator is not loaded ENOSYS comes
+                 */
+                if (op_errno == EAGAIN || op_errno == ENOSYS)
+                        return GF_LOG_DEBUG;
+        }
+
+        if ((fop == GF_FOP_GETXATTR) ||
+            (fop == GF_FOP_FGETXATTR)) {
+                if (op_errno == ENOTSUP || op_errno == ENODATA)
+                        return GF_LOG_DEBUG;
+        }
+
+        if ((fop == GF_FOP_SETXATTR) ||
+            (fop == GF_FOP_FSETXATTR) ||
+            (fop == GF_FOP_REMOVEXATTR) ||
+            (fop == GF_FOP_FREMOVEXATTR)) {
+                if (op_errno == ENOTSUP)
+                        return GF_LOG_DEBUG;
+        }
+
+        return GF_LOG_ERROR;
+}
diff --git a/libglusterfs/src/common-utils.h b/libglusterfs/src/common-utils.h
index a669e741e9a..0d5abb42ec2 100644
--- a/libglusterfs/src/common-utils.h
+++ b/libglusterfs/src/common-utils.h
@@ -650,4 +650,7 @@ gf_backtrace_save (char *buf);
 
 void
 gf_backtrace_done (char *buf);
+
+gf_loglevel_t
+fop_log_level (glusterfs_fop_t fop, int op_errno);
 #endif /* _COMMON_UTILS_H */