diff options
| author | Matthew Ahrens <[email protected]> | 2014-09-12 05:28:35 +0200 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2014-10-21 15:26:50 -0700 |
| commit | 6c59307a3c52535513e1ea3b612dac5a594c5b5d (patch) | |
| tree | 354e056c4e1bfca9feafc741cb6d5e3b775cf77b /include/sys/dmu.h | |
| parent | 356d9ed4c81dbb1c52627d1af242f4d9f66b67af (diff) | |
Illumos 3693 - restore_object uses at least two transactions to restore an object
Restore_object should not use two transactions to restore an object:
* one transaction is used for dmu_object_claim
* another transaction is used to set compression, checksum and most
importantly bonus data
* furthermore dmu_object_reclaim internally uses multiple transactions
* dmu_free_long_range frees chunks in separate transactions
* dnode_reallocate is executed in a distinct transaction
The fact the dnode_allocate/dnode_reallocate are executed in one
transaction and bonus (re-)population is executed in a different
transaction may lead to violation of ZFS consistency assertions if the
transactions are assigned to different transaction groups. Also, if
the first transaction group is successfully written to a permanent
storage, but the second transaction is lost, then an invalid dnode may
be created on the stable storage.
3693 restore_object uses at least two transactions to restore an object
Reviewed by: Christopher Siden <[email protected]>
Reviewed by: George Wilson <[email protected]>
Reviewed by: Andriy Gapon <[email protected]>
Approved by: Robert Mustacchi <[email protected]>
Original authors: Matthew Ahrens and Andriy Gapon
References:
https://www.illumos.org/issues/3693
https://github.com/illumos/illumos-gate/commit/e77d42e
Ported by: Turbo Fredriksson <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #2689
Diffstat (limited to 'include/sys/dmu.h')
| -rw-r--r-- | include/sys/dmu.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/sys/dmu.h b/include/sys/dmu.h index 2cf4a4bdd..c9c687b5a 100644 --- a/include/sys/dmu.h +++ b/include/sys/dmu.h @@ -23,6 +23,7 @@ * Copyright (c) 2011, 2014 by Delphix. All rights reserved. * Copyright 2011 Nexenta Systems, Inc. All rights reserved. * Copyright (c) 2012, Joyent, Inc. All rights reserved. + * Copyright 2014 HybridCluster. All rights reserved. */ /* Portions Copyright 2010 Robert Milkowski */ @@ -336,7 +337,7 @@ uint64_t dmu_object_alloc(objset_t *os, dmu_object_type_t ot, int dmu_object_claim(objset_t *os, uint64_t object, dmu_object_type_t ot, int blocksize, dmu_object_type_t bonus_type, int bonus_len, dmu_tx_t *tx); int dmu_object_reclaim(objset_t *os, uint64_t object, dmu_object_type_t ot, - int blocksize, dmu_object_type_t bonustype, int bonuslen); + int blocksize, dmu_object_type_t bonustype, int bonuslen, dmu_tx_t *txp); /* * Free an object from this objset. @@ -652,7 +653,8 @@ typedef struct dmu_object_info { uint8_t doi_indirection; /* 2 = dnode->indirect->data */ uint8_t doi_checksum; uint8_t doi_compress; - uint8_t doi_pad[5]; + uint8_t doi_nblkptr; + uint8_t doi_pad[4]; uint64_t doi_physical_blocks_512; /* data + metadata, 512b blks */ uint64_t doi_max_offset; uint64_t doi_fill_count; /* number of non-empty blocks */ |