svn commit: r326399 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs

[Alan Somers]

Author: asomers
Date: Thu Nov 30 15:28:29 2017
New Revision: 326399
URL: https://svnweb.freebsd.org/changeset/base/326399

Log:
  Fix assertion when ZFS fails to open certain devices
  
  "panic: vdev_geom_close_locked: cp->private is NULL"
  This panic will result if ZFS fails to open a device due to either of the
  following reasons:
  
  1) The device's sector size is greater than 8KB.
  2) ZFS wants to open the device RW, but it can't be opened for writing.
  
  The solution is to change the initialization order to ensure that the
  assertion will be satisfied.
  
  PR:		221066
  Reported by:	David NewHamlet <wheelcomplex at gmail.com>
  Reviewed by:	avg
  MFC after:	3 weeks
  Sponsored by:	Spectra Logic Corp
  Differential Revision:	https://reviews.freebsd.org/D13278

Modified:
  head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_raidz.c

Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_raidz.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_raidz.c	Thu Nov 30 15:10:11 2017	(r326398)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_raidz.c	Thu Nov 30 15:28:29 2017	(r326399)
@@ -2398,7 +2398,7 @@ vdev_raidz_io_done(zio_t *zio)
 				 */
 				if (parity_errors + parity_untried <
 				    rm->rm_firstdatacol ||
-				    (zio->io_flags & ZIO_FLAG_RESILVER)) {
+				    (zio->io_flags & (ZIO_FLAG_RESILVER | ZIO_FLAG_SCRUB))) {
 					n = raidz_parity_verify(zio, rm);
 					unexpected_errors += n;
 					ASSERT(parity_errors + n <=
@@ -2450,7 +2450,7 @@ vdev_raidz_io_done(zio_t *zio)
 				 * out to failed devices later.
 				 */
 				if (parity_errors < rm->rm_firstdatacol - n ||
-				    (zio->io_flags & ZIO_FLAG_RESILVER)) {
+				    (zio->io_flags & (ZIO_FLAG_RESILVER | ZIO_FLAG_SCRUB))) {
 					n = raidz_parity_verify(zio, rm);
 					unexpected_errors += n;
 					ASSERT(parity_errors + n <=
@@ -2552,7 +2552,8 @@ done:
 	zio_checksum_verified(zio);
 
 	if (zio->io_error == 0 && spa_writeable(zio->io_spa) &&
-	    (unexpected_errors || (zio->io_flags & ZIO_FLAG_RESILVER))) {
+	    (unexpected_errors ||
+	        (zio->io_flags & (ZIO_FLAG_RESILVER | ZIO_FLAG_SCRUB)))) {
 		/*
 		 * Use the good data we have in hand to repair damaged children.
 		 */