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OpenZFS 7301 - zpool export -f should be able to interrupt file freeing

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Authored by: Alek Pinchuk <alek@nexenta.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Sanjay Nadkarni <sanjay.nadkarni@nexenta.com>
Reviewed by: Saso Kiselkov <saso.kiselkov@nexenta.com>
Reviewed by: John Kennedy <john.kennedy@delphix.com>
Approved by: Gordon Ross <gordon.ross@nexenta.com>
Reviewed-by: Tim Chase <tim@chase2k.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported-by: George Melikov <mail@gmelikov.ru>

OpenZFS-issue: https://www.illumos.org/issues/7301
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/eb72182
Closes #5680
This commit is contained in:
George Melikov
2017-01-27 22:46:39 +03:00
committed by Brian Behlendorf
parent cc9bb3e58e
commit a08abc1bb3
4 changed files with 48 additions and 5 deletions
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module/zfs/dmu.c
+20 -1
View File
@@ -23,7 +23,7 @@
* Copyright (c) 2011, 2016 by Delphix. All rights reserved.
* Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
* Copyright (c) 2013, Joyent, Inc. All rights reserved.
* Copyright (c) 2014, Nexenta Systems, Inc. All rights reserved.
* Copyright (c) 2016, Nexenta Systems, Inc. All rights reserved.
* Copyright (c) 2015 by Chunwei Chen. All rights reserved.
*/
@@ -705,6 +705,22 @@ get_next_chunk(dnode_t *dn, uint64_t *start, uint64_t minimum)
return (0);
}
/*
* If this objset is of type OST_ZFS return true if vfs's unmounted flag is set,
* otherwise return false.
* Used below in dmu_free_long_range_impl() to enable abort when unmounting
*/
/*ARGSUSED*/
static boolean_t
dmu_objset_zfs_unmounting(objset_t *os)
{
#ifdef _KERNEL
if (dmu_objset_type(os) == DMU_OST_ZFS)
return (zfs_get_vfs_flag_unmounted(os));
#endif
return (B_FALSE);
}
static int
dmu_free_long_range_impl(objset_t *os, dnode_t *dn, uint64_t offset,
uint64_t length)
@@ -726,6 +742,9 @@ dmu_free_long_range_impl(objset_t *os, dnode_t *dn, uint64_t offset,
uint64_t chunk_end, chunk_begin;
dmu_tx_t *tx;
if (dmu_objset_zfs_unmounting(dn->dn_objset))
return (SET_ERROR(EINTR));
chunk_end = chunk_begin = offset + length;
/* move chunk_begin backwards to the beginning of this chunk */