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Retire send space estimation via ZFS_IOC_SEND

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Add a small wrapper around libzfs_core`lzc_send_space() to libzfs so
that every legacy ZFS_IOC_SEND consumer, along with their userland
counterpart estimate_ioctl(), can leverage ZFS_IOC_SEND_SPACE to
request send space estimation.

The legacy functionality in zfs_ioc_send() is left untouched for
compatibility purposes.

Reviewed by: Thomas Caputi <tcaputi@datto.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #6029
This commit is contained in:
LOLi
2017-08-31 18:00:35 +02:00
committed by Brian Behlendorf
parent 1afc54f7f4
commit cf7684bc8d
3 changed files with 35 additions and 27 deletions
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lib/libzfs_core/libzfs_core.c
+2
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@@ -590,6 +590,8 @@ lzc_send_space(const char *snapname, const char *from,
fnvlist_add_boolean(args, "embedok");
if (flags & LZC_SEND_FLAG_COMPRESS)
fnvlist_add_boolean(args, "compressok");
if (flags & LZC_SEND_FLAG_RAW)
fnvlist_add_boolean(args, "rawok");
err = lzc_ioctl(ZFS_IOC_SEND_SPACE, snapname, args, &result);
nvlist_free(args);
if (err == 0)