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Date:      Wed, 4 Dec 2013 14:50:44 +0000 (UTC)
From:      Andriy Gapon <avg@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-vendor@freebsd.org
Subject:   svn commit: r258923 - vendor-sys/illumos/dist/uts/common/fs/zfs
Message-ID:  <201312041450.rB4Eoi7c057812@svn.freebsd.org>

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Author: avg
Date: Wed Dec  4 14:50:43 2013
New Revision: 258923
URL: http://svnweb.freebsd.org/changeset/base/258923

Log:
  4188 assertion failed in dmu_tx_hold_free(): dn_datablkshift != 0
  
  illumos/illumos-gate@bb411a08b05466bfe0c7095b6373bbc1587e259a

Modified:
  vendor-sys/illumos/dist/uts/common/fs/zfs/dmu_tx.c

Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/dmu_tx.c
==============================================================================
--- vendor-sys/illumos/dist/uts/common/fs/zfs/dmu_tx.c	Wed Dec  4 14:49:20 2013	(r258922)
+++ vendor-sys/illumos/dist/uts/common/fs/zfs/dmu_tx.c	Wed Dec  4 14:50:43 2013	(r258923)
@@ -635,9 +635,16 @@ dmu_tx_hold_free(dmu_tx_t *tx, uint64_t 
 		uint64_t start = off >> shift;
 		uint64_t end = (off + len) >> shift;
 
-		ASSERT(dn->dn_datablkshift != 0);
 		ASSERT(dn->dn_indblkshift != 0);
 
+		/*
+		 * dnode_reallocate() can result in an object with indirect
+		 * blocks having an odd data block size.  In this case,
+		 * just check the single block.
+		 */
+		if (dn->dn_datablkshift == 0)
+			start = end = 0;
+
 		zio = zio_root(tx->tx_pool->dp_spa,
 		    NULL, NULL, ZIO_FLAG_CANFAIL);
 		for (uint64_t i = start; i <= end; i++) {



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