OpenZFS 5120 - zfs should allow large block/gzip/raidz boot pool (loader project)

Authored by: Toomas Soome <[email protected]>
Reviewed by: George Wilson <[email protected]>
Reviewed by: Yuri Pankov <[email protected]>
Reviewed by: Andrew Stormont <[email protected]>
Reviewed by: Matthew Ahrens <[email protected]>
Approved by: Robert Mustacchi <[email protected]>
Reviewed-by: Giuseppe Di Natale <[email protected]>
Reviewed-by: George Melikov <[email protected]>
Reviewed-by: Don Brady <[email protected]>
Ported-by: Brian Behlendorf <[email protected]>

Porting Notes:
- grub-2.02-beta2-422-gcad5cc0 includes support for large blocks.
- Commit 8aab121 allowed GZIP[1-9].
- Grub allows pools with multiple top-level vdevs.

OpenZFS-issue: https://www.illumos.org/issues/5120
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/c8811bd
Closes #6007 

1 files changed, 2 insertions, 10 deletions

diff --git a/module/zfs/zfs_ioctl.c b/module/zfs/zfs_ioctl.c
index 6df61fecb..534df5a06 100644
--- a/module/zfs/zfs_ioctl.c
+++ b/module/zfs/zfs_ioctl.c
@@ -30,6 +30,8 @@
  * Copyright (c) 2011, 2015 by Delphix. All rights reserved.
  * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
  * Copyright (c) 2013 Steven Hartland. All rights reserved.
+ * Copyright (c) 2014 Integros [integros.com]
+ * Copyright 2016 Toomas Soome <[email protected]>
  * Copyright (c) 2016 Actifio, Inc. All rights reserved.
  */
 
@@ -3857,16 +3859,6 @@ zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr)
 			spa_t *spa;
 
 			/*
-			 * If this is a bootable dataset then
-			 * we don't allow large (>128K) blocks,
-			 * because GRUB doesn't support them.
-			 */
-			if (zfs_is_bootfs(dsname) &&
-			    intval > SPA_OLD_MAXBLOCKSIZE) {
-				return (SET_ERROR(ERANGE));
-			}
-
-			/*
 			 * We don't allow setting the property above 1MB,
 			 * unless the tunable has been changed.
 			 */