Date: Thu, 9 Oct 2014 05:53:05 +0000 (UTC) From: Xin LI <delphij@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-vendor@freebsd.org Subject: svn commit: r272804 - in vendor-sys/illumos/dist/uts/common/fs/zfs: . sys Message-ID: <201410090553.s995r5Di066650@svn.freebsd.org>
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Author: delphij Date: Thu Oct 9 05:53:04 2014 New Revision: 272804 URL: https://svnweb.freebsd.org/changeset/base/272804 Log: 3693 restore_object uses at least two transactions to restore an object Reviewed by: Christopher Siden <christopher.siden@delphix.com> Reviewed by: George Wilson <george.wilson@delphix.com> Reviewed by: Andriy Gapon <andriy.gapon@hybridcluster.com> Approved by: Robert Mustacchi <rm@joyent.com> Author: Matthew Ahrens <mahrens@delphix.com> illumos/illumos-gate@e77d42eaa49fe55bfae1e0e0065c6e99affc001b Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/dmu.c vendor-sys/illumos/dist/uts/common/fs/zfs/dmu_object.c vendor-sys/illumos/dist/uts/common/fs/zfs/dmu_send.c vendor-sys/illumos/dist/uts/common/fs/zfs/sys/dmu.h Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/dmu.c ============================================================================== --- vendor-sys/illumos/dist/uts/common/fs/zfs/dmu.c Thu Oct 9 05:50:23 2014 (r272803) +++ vendor-sys/illumos/dist/uts/common/fs/zfs/dmu.c Thu Oct 9 05:53:04 2014 (r272804) @@ -1848,6 +1848,7 @@ dmu_object_info_from_dnode(dnode_t *dn, doi->doi_indirection = dn->dn_nlevels; doi->doi_checksum = dn->dn_checksum; doi->doi_compress = dn->dn_compress; + doi->doi_nblkptr = dn->dn_nblkptr; doi->doi_physical_blocks_512 = (DN_USED_BYTES(dnp) + 256) >> 9; doi->doi_max_offset = (dn->dn_maxblkid + 1) * dn->dn_datablksz; doi->doi_fill_count = 0; Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/dmu_object.c ============================================================================== --- vendor-sys/illumos/dist/uts/common/fs/zfs/dmu_object.c Thu Oct 9 05:50:23 2014 (r272803) +++ vendor-sys/illumos/dist/uts/common/fs/zfs/dmu_object.c Thu Oct 9 05:53:04 2014 (r272804) @@ -20,7 +20,8 @@ */ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2013 by Delphix. All rights reserved. + * Copyright (c) 2013, 2014 by Delphix. All rights reserved. + * Copyright 2014 HybridCluster. All rights reserved. */ #include <sys/dmu.h> @@ -107,11 +108,9 @@ dmu_object_claim(objset_t *os, uint64_t 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 *tx) { dnode_t *dn; - dmu_tx_t *tx; - int nblkptr; int err; if (object == DMU_META_DNODE_OBJECT) @@ -122,44 +121,9 @@ dmu_object_reclaim(objset_t *os, uint64_ if (err) return (err); - if (dn->dn_type == ot && dn->dn_datablksz == blocksize && - dn->dn_bonustype == bonustype && dn->dn_bonuslen == bonuslen) { - /* nothing is changing, this is a noop */ - dnode_rele(dn, FTAG); - return (0); - } - - if (bonustype == DMU_OT_SA) { - nblkptr = 1; - } else { - nblkptr = 1 + ((DN_MAX_BONUSLEN - bonuslen) >> SPA_BLKPTRSHIFT); - } - - /* - * If we are losing blkptrs or changing the block size this must - * be a new file instance. We must clear out the previous file - * contents before we can change this type of metadata in the dnode. - */ - if (dn->dn_nblkptr > nblkptr || dn->dn_datablksz != blocksize) { - err = dmu_free_long_range(os, object, 0, DMU_OBJECT_END); - if (err) - goto out; - } - - tx = dmu_tx_create(os); - dmu_tx_hold_bonus(tx, object); - err = dmu_tx_assign(tx, TXG_WAIT); - if (err) { - dmu_tx_abort(tx); - goto out; - } - dnode_reallocate(dn, ot, blocksize, bonustype, bonuslen, tx); - dmu_tx_commit(tx); -out: dnode_rele(dn, FTAG); - return (err); } Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/dmu_send.c ============================================================================== --- vendor-sys/illumos/dist/uts/common/fs/zfs/dmu_send.c Thu Oct 9 05:50:23 2014 (r272803) +++ vendor-sys/illumos/dist/uts/common/fs/zfs/dmu_send.c Thu Oct 9 05:53:04 2014 (r272804) @@ -23,6 +23,7 @@ * Copyright 2011 Nexenta Systems, Inc. All rights reserved. * Copyright (c) 2011, 2014 by Delphix. All rights reserved. * Copyright (c) 2014, Joyent, Inc. All rights reserved. + * Copyright 2014 HybridCluster. All rights reserved. */ #include <sys/dmu.h> @@ -1333,12 +1334,25 @@ backup_byteswap(dmu_replay_record_t *drr #undef DO32 } +static inline uint8_t +deduce_nblkptr(dmu_object_type_t bonus_type, uint64_t bonus_size) +{ + if (bonus_type == DMU_OT_SA) { + return (1); + } else { + return (1 + + ((DN_MAX_BONUSLEN - bonus_size) >> SPA_BLKPTRSHIFT)); + } +} + static int restore_object(struct restorearg *ra, objset_t *os, struct drr_object *drro) { - int err; + dmu_object_info_t doi; dmu_tx_t *tx; void *data = NULL; + uint64_t object; + int err; if (drro->drr_type == DMU_OT_NONE || !DMU_OT_IS_VALID(drro->drr_type) || @@ -1352,10 +1366,11 @@ restore_object(struct restorearg *ra, ob return (SET_ERROR(EINVAL)); } - err = dmu_object_info(os, drro->drr_object, NULL); + err = dmu_object_info(os, drro->drr_object, &doi); if (err != 0 && err != ENOENT) return (SET_ERROR(EINVAL)); + object = err == 0 ? drro->drr_object : DMU_NEW_OBJECT; if (drro->drr_bonuslen) { data = restore_read(ra, P2ROUNDUP(drro->drr_bonuslen, 8), NULL); @@ -1363,37 +1378,53 @@ restore_object(struct restorearg *ra, ob return (ra->err); } - if (err == ENOENT) { - /* currently free, want to be allocated */ - tx = dmu_tx_create(os); - dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT); - err = dmu_tx_assign(tx, TXG_WAIT); - if (err != 0) { - dmu_tx_abort(tx); - return (err); + /* + * If we are losing blkptrs or changing the block size this must + * be a new file instance. We must clear out the previous file + * contents before we can change this type of metadata in the dnode. + */ + if (err == 0) { + int nblkptr; + + nblkptr = deduce_nblkptr(drro->drr_bonustype, + drro->drr_bonuslen); + + if (drro->drr_blksz != doi.doi_data_block_size || + nblkptr < doi.doi_nblkptr) { + err = dmu_free_long_range(os, drro->drr_object, + 0, DMU_OBJECT_END); + if (err != 0) + return (SET_ERROR(EINVAL)); } + } + + tx = dmu_tx_create(os); + dmu_tx_hold_bonus(tx, object); + err = dmu_tx_assign(tx, TXG_WAIT); + if (err != 0) { + dmu_tx_abort(tx); + return (err); + } + + if (object == DMU_NEW_OBJECT) { + /* currently free, want to be allocated */ err = dmu_object_claim(os, drro->drr_object, drro->drr_type, drro->drr_blksz, drro->drr_bonustype, drro->drr_bonuslen, tx); - dmu_tx_commit(tx); - } else { - /* currently allocated, want to be allocated */ + } else if (drro->drr_type != doi.doi_type || + drro->drr_blksz != doi.doi_data_block_size || + drro->drr_bonustype != doi.doi_bonus_type || + drro->drr_bonuslen != doi.doi_bonus_size) { + /* currently allocated, but with different properties */ err = dmu_object_reclaim(os, drro->drr_object, drro->drr_type, drro->drr_blksz, - drro->drr_bonustype, drro->drr_bonuslen); + drro->drr_bonustype, drro->drr_bonuslen, tx); } if (err != 0) { + dmu_tx_commit(tx); return (SET_ERROR(EINVAL)); } - tx = dmu_tx_create(os); - dmu_tx_hold_bonus(tx, drro->drr_object); - err = dmu_tx_assign(tx, TXG_WAIT); - if (err != 0) { - dmu_tx_abort(tx); - return (err); - } - dmu_object_set_checksum(os, drro->drr_object, drro->drr_checksumtype, tx); dmu_object_set_compress(os, drro->drr_object, drro->drr_compress, tx); Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/sys/dmu.h ============================================================================== --- vendor-sys/illumos/dist/uts/common/fs/zfs/sys/dmu.h Thu Oct 9 05:50:23 2014 (r272803) +++ vendor-sys/illumos/dist/uts/common/fs/zfs/sys/dmu.h Thu Oct 9 05:53:04 2014 (r272804) @@ -25,6 +25,7 @@ * Copyright 2011 Nexenta Systems, Inc. All rights reserved. * Copyright (c) 2012, Joyent, Inc. All rights reserved. * Copyright 2013 DEY Storage Systems, Inc. + * Copyright 2014 HybridCluster. All rights reserved. */ /* Portions Copyright 2010 Robert Milkowski */ @@ -339,7 +340,7 @@ uint64_t dmu_object_alloc(objset_t *os, 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. @@ -653,7 +654,8 @@ 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 */
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