svn commit: r208064 - stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs

[Martin Matuska]

Author: mm
Date: Fri May 14 09:06:49 2010
New Revision: 208064
URL: http://svn.freebsd.org/changeset/base/208064

Log:
  MFC r207908:
  
  Fix endianess bug in ZFS intent log (ZIL).
  
  OpenSolaris onnv revision:	8109:6147a1bdd359
  
  Approved by:	pjd, delphij (mentor)
  Obtained from:	OpenSolaris (Bug ID 6760048)

Modified:
  stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/xen/xenpci/   (props changed)
  stable/8/sys/geom/sched/   (props changed)

Modified: stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c
==============================================================================
--- stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c	Fri May 14 09:02:31 2010	(r208063)
+++ stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c	Fri May 14 09:06:49 2010	(r208064)
@@ -358,14 +358,20 @@ zil_create(zilog_t *zilog)
 	blk = zh->zh_log;
 
 	/*
-	 * If we don't already have an initial log block, allocate one now.
+	 * If we don't already have an initial log block or we have one
+	 * but it's the wrong endianness then allocate one.
 	 */
-	if (BP_IS_HOLE(&blk)) {
+	if (BP_IS_HOLE(&blk) || BP_SHOULD_BYTESWAP(&blk)) {
 		tx = dmu_tx_create(zilog->zl_os);
 		(void) dmu_tx_assign(tx, TXG_WAIT);
 		dsl_dataset_dirty(dmu_objset_ds(zilog->zl_os), tx);
 		txg = dmu_tx_get_txg(tx);
 
+		if (!BP_IS_HOLE(&blk)) {
+			zio_free_blk(zilog->zl_spa, &blk, txg);
+			BP_ZERO(&blk);
+		}
+
 		error = zio_alloc_blk(zilog->zl_spa, ZIL_MIN_BLKSZ, &blk,
 		    NULL, txg);