Author: mav
Date: Sun Mar 20 23:57:46 2016
New Revision: 297100
URL: https://svnweb.freebsd.org/changeset/base/297100

Log:
  MFC r294811: MFV r294810: 6414 vdev_config_sync could be simpler
  
  Reviewed by: George Wilson <george.wil...@delphix.com>
  Reviewed by: Matthew Ahrens <mahr...@delphix.com>
  Approved by: Robert Mustacchi <r...@joyent.com>
  Author: Will Andrews <w...@firepipe.net>
  
  illumos/illumos-gate@eb5bb58421f46cee79155a55688e6c675e7dd361

Modified:
  stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c
  stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/vdev.h
  stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_label.c
Directory Properties:
  stable/10/   (props changed)

Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c
==============================================================================
--- stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c      Sun Mar 
20 23:56:59 2016        (r297099)
+++ stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c      Sun Mar 
20 23:57:46 2016        (r297100)
@@ -6772,16 +6772,10 @@ spa_sync(spa_t *spa, uint64_t txg)
                                if (svdcount == SPA_DVAS_PER_BP)
                                        break;
                        }
-                       error = vdev_config_sync(svd, svdcount, txg, B_FALSE);
-                       if (error != 0)
-                               error = vdev_config_sync(svd, svdcount, txg,
-                                   B_TRUE);
+                       error = vdev_config_sync(svd, svdcount, txg);
                } else {
                        error = vdev_config_sync(rvd->vdev_child,
-                           rvd->vdev_children, txg, B_FALSE);
-                       if (error != 0)
-                               error = vdev_config_sync(rvd->vdev_child,
-                                   rvd->vdev_children, txg, B_TRUE);
+                           rvd->vdev_children, txg);
                }
 
                if (error == 0)

Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/vdev.h
==============================================================================
--- stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/vdev.h Sun Mar 
20 23:56:59 2016        (r297099)
+++ stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/vdev.h Sun Mar 
20 23:57:46 2016        (r297100)
@@ -127,8 +127,7 @@ extern void vdev_queue_register_lastoffs
 
 extern void vdev_config_dirty(vdev_t *vd);
 extern void vdev_config_clean(vdev_t *vd);
-extern int vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg,
-    boolean_t);
+extern int vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg);
 
 extern void vdev_state_dirty(vdev_t *vd);
 extern void vdev_state_clean(vdev_t *vd);

Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_label.c
==============================================================================
--- stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_label.c       
Sun Mar 20 23:56:59 2016        (r297099)
+++ stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_label.c       
Sun Mar 20 23:57:46 2016        (r297100)
@@ -1194,15 +1194,16 @@ vdev_label_sync_list(spa_t *spa, int l, 
  * at any time, you can just call it again, and it will resume its work.
  */
 int
-vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg, boolean_t tryhard)
+vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg)
 {
        spa_t *spa = svd[0]->vdev_spa;
        uberblock_t *ub = &spa->spa_uberblock;
        vdev_t *vd;
        zio_t *zio;
-       int error;
+       int error = 0;
        int flags = ZIO_FLAG_CONFIG_WRITER | ZIO_FLAG_CANFAIL;
 
+retry:
        /*
         * Normally, we don't want to try too hard to write every label and
         * uberblock.  If there is a flaky disk, we don't want the rest of the
@@ -1210,8 +1211,11 @@ vdev_config_sync(vdev_t **svd, int svdco
         * single label out, we should retry with ZIO_FLAG_TRYHARD before
         * bailing out and declaring the pool faulted.
         */
-       if (tryhard)
+       if (error != 0) {
+               if ((flags & ZIO_FLAG_TRYHARD) != 0)
+                       return (error);
                flags |= ZIO_FLAG_TRYHARD;
+       }
 
        ASSERT(ub->ub_txg <= txg);
 
@@ -1255,7 +1259,7 @@ vdev_config_sync(vdev_t **svd, int svdco
         * are committed to stable storage before the uberblock update.
         */
        if ((error = vdev_label_sync_list(spa, 0, txg, flags)) != 0)
-               return (error);
+               goto retry;
 
        /*
         * Sync the uberblocks to all vdevs in svd[].
@@ -1273,7 +1277,7 @@ vdev_config_sync(vdev_t **svd, int svdco
         *      to the new uberblocks.
         */
        if ((error = vdev_uberblock_sync_list(svd, svdcount, ub, flags)) != 0)
-               return (error);
+               goto retry;
 
        /*
         * Sync out odd labels for every dirty vdev.  If the system dies
@@ -1286,7 +1290,7 @@ vdev_config_sync(vdev_t **svd, int svdco
         * stable storage before the next transaction group begins.
         */
        if ((error = vdev_label_sync_list(spa, 1, txg, flags)) != 0)
-               return (error);
+               goto retry;;
 
        trim_thread_wakeup(spa);
 
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