From: Michael Meffie <mmeffie@sinenomine.net>
Date: Tue, 20 Aug 2013 20:48:34 +0000 (-0400)
Subject: bozo: cap retry delay
X-Git-Tag: upstream/1.8.0_pre1^2~998
X-Git-Url: https://git.michaelhowe.org/gitweb/?a=commitdiff_plain;h=21c8f4809ee7af9d2ec76cb37747183cee0c0d33;p=packages%2Fo%2Fopenafs.git

bozo: cap retry delay

Cap the retry delay to a reasonable amount of time instead
of just doubling the delay until it reaches 16 hours.

Change-Id: Ibc7dd75670a9b02f34050842b6e54df4f5a7c315
Reviewed-on: http://gerrit.openafs.org/10148
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
---

diff --git a/src/bozo/bnode.c b/src/bozo/bnode.c
index 6f8f99b14..752747482 100644
--- a/src/bozo/bnode.c
+++ b/src/bozo/bnode.c
@@ -32,6 +32,7 @@
 
 #define BNODE_LWP_STACKSIZE	(16 * 1024)
 #define BNODE_ERROR_COUNT_MAX   16   /* maximum number of retries */
+#define BNODE_ERROR_DELAY_MAX   60   /* maximum retry delay (seconds) */
 
 int bnode_waiting = 0;
 static PROCESS bproc_pid;	/* pid of waker-upper */
@@ -657,9 +658,12 @@ bproc(void *unused)
 			} else {
 			    tb->errorStopCount++;
 			    if (!tb->errorStopDelay) {
-				tb->errorStopDelay = 1;
+				tb->errorStopDelay = 1;   /* wait a second, then retry */
 			    } else {
-			        tb->errorStopDelay *= 2;
+			        tb->errorStopDelay *= 2;  /* ramp up the retry delays */
+			    }
+			    if (tb->errorStopDelay > BNODE_ERROR_DELAY_MAX) {
+			        tb->errorStopDelay = BNODE_ERROR_DELAY_MAX; /* cap the delay */
 			    }
 			}
 			tb->flags |= BNODE_ERRORSTOP;