DEVEL15-vgetvnode-debuglog-vio-20071228

LICENSE IPL10

provide a way to log otherwise unlogged VIO error cause

(cherry picked from commit 2e135307b52b04003a22aa9985807a70b407accc)

diff --git a/src/vol/vnode.c b/src/vol/vnode.c
index e73a12ab88a5861e974a546d1d940124a7e6f0cc..3abc50782f91f5e6d9f1b9073afa2e930a0a49b8 100644 (file)
--- a/src/vol/vnode.c
+++ b/src/vol/vnode.c
@@ -73,6 +73,8 @@ private int moveHash(register Vnode * vnp, bit32 newHash);
 private void StickOnLruChain_r(register Vnode * vnp,
                               register struct VnodeClassInfo *vcp);
 
+extern int LogLevel;
+
 #define BAD_IGET       -1000
 
 /* There are two separate vnode queue types defined here:
@@ -699,6 +701,9 @@ VGetVnode_r(Error * ec, Volume * vp, VnodeId vnodeNumber, int locktype)
 #endif
                mlkReason = 4;
            } else {
+               /* Probably legit; Don't knock the volume offline */
+               if (LogLevel >= 5) 
+                   Log("VGetVnode: Couldn't read vnode %u, volume %u (%s); errno %d\n", vnodeNumber, V_id(vp), V_name(vp), errno);
                mlkReason = 5;
                *ec = VIO;
            }