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Illumos #3744

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3744 zfs shouldn't ignore errors unmounting snapshots
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Christopher Siden <christopher.siden@delphix.com>

References:
  https://www.illumos.org/issues/3744
  illumos/illumos-gate@fc7a6e3fef

Ported-by: Richard Yao <ryao@gentoo.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #1775

Porting notes:

1. There is no clear way to distinguish between a failure when we
   tried to unmount the snapdir of a zvol (which does not exist)
   and the failure when we try to unmount a snapdir of a dataset,
   so the changes to zfs_unmount_snap() were dropped in favor of
   an altered Linux function that unconditionally returns 0.
This commit is contained in:
Will Andrews
2013-06-11 09:13:43 -08:00
committed by Brian Behlendorf
parent 3a84951d7d
commit d09f25dc66
3 changed files with 32 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/sys/zfs_ioctl.h
+1 -1
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@@ -356,7 +356,7 @@ extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr);
extern int zfs_secpolicy_rename_perms(const char *from,
const char *to, cred_t *cr);
extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr);
extern void zfs_unmount_snap(const char *);
extern int zfs_unmount_snap(const char *);
extern void zfs_destroy_unmount_origin(const char *);
enum zfsdev_state_type {