glusterfs: During reconfigure set log-level per xlator level

Problem: In brick_mux environment, while a user has enabled brick-log-level
         for anyone volume, it automatically enables for other volumes
         also those are attached with same brick.

Solution: A log-level option is automatically enabled for other volumes
          because log-level saved in glusterfsd_ctx and ctx is common for
          volumes those are attached with same brick. To resolve it
          set log level for all children xlator's at the time of the graph
          reconfigure at io-stat xlator.

Change-Id: Id9a6efa05d286e0bea2d47f49292d084e7bb2fcf
fixes: bz#1640495
Signed-off-by: Mohit Agrawal <moagrawal@redhat.com>

1 files changed, 31 insertions, 1 deletions

diff --git a/xlators/debug/io-stats/src/io-stats.c b/xlators/debug/io-stats/src/io-stats.c
index f2b72369421..3b370f20e50 100644
--- a/xlators/debug/io-stats/src/io-stats.c
+++ b/xlators/debug/io-stats/src/io-stats.c
@@ -3660,6 +3660,35 @@ ios_set_log_format_code(struct ios_conf *conf)
         conf->dump_format = IOS_DUMP_TYPE_SAMPLES;
 }
 
+void
+xlator_set_loglevel(xlator_t *this, int log_level)
+{
+    glusterfs_ctx_t *ctx = NULL;
+    glusterfs_graph_t *active = NULL;
+    xlator_t *top = NULL;
+    xlator_t *trav = this;
+
+    ctx = this->ctx;
+    GF_ASSERT(ctx);
+    active = ctx->active;
+    top = active->first;
+
+    if (strcmp(top->type, "protocol/server") || (log_level == -1))
+        return;
+
+    /* Set log-level for server xlator */
+    top->loglevel = log_level;
+
+    /* Set log-level for parent xlator */
+    if (this->parents)
+        this->parents->xlator->loglevel = log_level;
+
+    while (trav) {
+        trav->loglevel = log_level;
+        trav = trav->next;
+    }
+}
+
 int
 reconfigure(xlator_t *this, dict_t *options)
 {
@@ -3726,7 +3755,8 @@ reconfigure(xlator_t *this, dict_t *options)
     GF_OPTION_RECONF("log-level", log_str, options, str, out);
     if (log_str) {
         log_level = glusterd_check_log_level(log_str);
-        gf_log_set_loglevel(this->ctx, log_level);
+        /* Set loglevel for all children and server xlators */
+        xlator_set_loglevel(this, log_level);
     }
 
     GF_OPTION_RECONF("logger", logger_str, options, str, out);