diff options
author | mav <mav@FreeBSD.org> | 2015-10-03 07:57:32 +0000 |
---|---|---|
committer | mav <mav@FreeBSD.org> | 2015-10-03 07:57:32 +0000 |
commit | 2c79b8a95c3e6434e650abc47b8b228b7ea1e29b (patch) | |
tree | 9244ab7167b51eba90f8278b802be12a3e07f77d /sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c | |
parent | 1bb1f7f370c76640fdbef59f76a68c06b24b304d (diff) | |
download | FreeBSD-src-2c79b8a95c3e6434e650abc47b8b228b7ea1e29b.zip FreeBSD-src-2c79b8a95c3e6434e650abc47b8b228b7ea1e29b.tar.gz |
MFC r286683: 5765 add support for estimating send stream size with
lzc_send_space when source is a bookmark
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: Steven Hartland <killing@multiplay.co.uk>
Reviewed by: Bayard Bell <buffer.g.overflow@gmail.com>
Approved by: Albert Lee <trisk@nexenta.com>
Author: Max Grossman <max.grossman@delphix.com>
illumos/illumos-gate@643da460c8ca583e39ce053081754e24087f84c8
Diffstat (limited to 'sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c')
-rw-r--r-- | sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c | 52 |
1 files changed, 40 insertions, 12 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c index 5d9b6af..5d24165 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c @@ -5488,7 +5488,8 @@ zfs_ioc_send_new(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) * of bytes that will be written to the fd supplied to zfs_ioc_send_new(). * * innvl: { - * (optional) "fromsnap" -> full snap name to send an incremental from + * (optional) "from" -> full snap or bookmark name to send an incremental + * from * } * * outnvl: { @@ -5499,7 +5500,6 @@ static int zfs_ioc_send_space(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) { dsl_pool_t *dp; - dsl_dataset_t *fromsnap = NULL; dsl_dataset_t *tosnap; int error; char *fromname; @@ -5515,27 +5515,55 @@ zfs_ioc_send_space(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl) return (error); } - error = nvlist_lookup_string(innvl, "fromsnap", &fromname); + error = nvlist_lookup_string(innvl, "from", &fromname); if (error == 0) { - error = dsl_dataset_hold(dp, fromname, FTAG, &fromsnap); - if (error != 0) { - dsl_dataset_rele(tosnap, FTAG); - dsl_pool_rele(dp, FTAG); - return (error); + if (strchr(fromname, '@') != NULL) { + /* + * If from is a snapshot, hold it and use the more + * efficient dmu_send_estimate to estimate send space + * size using deadlists. + */ + dsl_dataset_t *fromsnap; + error = dsl_dataset_hold(dp, fromname, FTAG, &fromsnap); + if (error != 0) + goto out; + error = dmu_send_estimate(tosnap, fromsnap, &space); + dsl_dataset_rele(fromsnap, FTAG); + } else if (strchr(fromname, '#') != NULL) { + /* + * If from is a bookmark, fetch the creation TXG of the + * snapshot it was created from and use that to find + * blocks that were born after it. + */ + zfs_bookmark_phys_t frombm; + + error = dsl_bookmark_lookup(dp, fromname, tosnap, + &frombm); + if (error != 0) + goto out; + error = dmu_send_estimate_from_txg(tosnap, + frombm.zbm_creation_txg, &space); + } else { + /* + * from is not properly formatted as a snapshot or + * bookmark + */ + error = SET_ERROR(EINVAL); + goto out; } + } else { + // If estimating the size of a full send, use dmu_send_estimate + error = dmu_send_estimate(tosnap, NULL, &space); } - error = dmu_send_estimate(tosnap, fromsnap, &space); fnvlist_add_uint64(outnvl, "space", space); - if (fromsnap != NULL) - dsl_dataset_rele(fromsnap, FTAG); +out: dsl_dataset_rele(tosnap, FTAG); dsl_pool_rele(dp, FTAG); return (error); } - static zfs_ioc_vec_t zfs_ioc_vec[ZFS_IOC_LAST - ZFS_IOC_FIRST]; static void |