From 2de9ac218241648f1ec86b73aac728d713862a30 Mon Sep 17 00:00:00 2001
From: moagrawa <moagrawa@redhat.com>
Date: Fri, 4 May 2018 16:17:42 +0530
Subject: [PATCH 254/260] posix: Avoid changelog retries for geo-rep

Problem: georep is slowdown to migrate directory
         from master volume to slave volume due to lot
         of changelog retries

Solution: Update the condition in posix_getxattr to
          ignore MDS_INTERNAL_XATTR as it(posix) ignored
          other internal xattrs

> BUG: 1571069
> Change-Id: I4d91ec73e5b1ca1cb3ecf0825ab9f49e261da70e
> fixes: bz#1571069
> Signed-off-by: Mohit Agrawal <moagrawa@redhat.com>
> (cherry picked from commit f46047ea0f36084f4456887673552a01b926382d)
> (Reviewed on: https://review.gluster.org/#/c/19930/)

BUG: 1565577
Change-Id: I85b2e8ed4adcbe34ee5a03acd068693978e9cfe4
Signed-off-by: moagrawa <moagrawa@redhat.com>
Reviewed-on: https://code.engineering.redhat.com/gerrit/137779
Tested-by: RHGS Build Bot <nigelb@redhat.com>
Reviewed-by: Kotresh Hiremath Ravishankar <khiremat@redhat.com>
Reviewed-by: Sunil Kumar Heggodu Gopala Acharya <sheggodu@redhat.com>
---
 xlators/storage/posix/src/posix.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/xlators/storage/posix/src/posix.c b/xlators/storage/posix/src/posix.c
index c680e3f..416d9e4 100644
--- a/xlators/storage/posix/src/posix.c
+++ b/xlators/storage/posix/src/posix.c
@@ -27,6 +27,7 @@
 #include <sys/uio.h>
 #include <unistd.h>
 #include <ftw.h>
+#include <regex.h>
 
 #ifndef GF_BSD_HOST_OS
 #include <alloca.h>
@@ -4625,6 +4626,27 @@ out:
         return ret;
 }
 
+gf_boolean_t
+posix_is_mds_xattr (const char *name)
+{
+        regex_t regcmpl;
+        char *key = {"trusted.glusterfs.*.mds$"};
+        regmatch_t result[1] = {{0} };
+        gf_boolean_t status = _gf_false;
+
+        if (regcomp (&regcmpl, key, REG_EXTENDED)) {
+                goto out;
+        }
+        if (!regexec (&regcmpl, name, 1, result, 0)) {
+                status = _gf_true;
+                goto out;
+        }
+out:
+        regfree(&regcmpl);
+        return status;
+}
+
+
 /**
  * posix_getxattr - this function returns a dictionary with all the
  *                  key:value pair present as xattr. used for
@@ -4680,6 +4702,13 @@ posix_getxattr (call_frame_t *frame, xlator_t *this,
                 goto out;
         }
 
+        if (name && posix_is_mds_xattr (name)) {
+                op_ret = -1;
+                op_errno = ENOATTR;
+                goto out;
+        }
+
+
         if (loc->inode && IA_ISDIR(loc->inode->ia_type) && name &&
             ZR_FILE_CONTENT_REQUEST(name)) {
                 ret = posix_get_file_contents (this, loc->gfid, &name[15],
@@ -5049,6 +5078,10 @@ posix_getxattr (call_frame_t *frame, xlator_t *this,
                         goto ignore;
                 }
 
+                if (posix_is_mds_xattr (keybuffer)) {
+                        goto ignore;
+                }
+
                 memset (value_buf, '\0', sizeof(value_buf));
                 have_val = _gf_false;
                 size = sys_lgetxattr (real_path, keybuffer, value_buf,
-- 
1.8.3.1