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Illumos 4757, 4913

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4757 ZFS embedded-data block pointers ("zero block compression")
4913 zfs release should not be subject to space checks

Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Max Grossman <max.grossman@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: Dan McDonald <danmcd@omniti.com>
Approved by: Dan McDonald <danmcd@omniti.com>

References:
  https://www.illumos.org/issues/4757
  https://www.illumos.org/issues/4913
  https://github.com/illumos/illumos-gate/commit/5d7b4d4

Porting notes:

For compatibility with the fastpath code the zio_done() function
needed to be updated.  Because embedded-data block pointers do
not require DVAs to be allocated the associated vdevs will not
be marked and therefore should not be unmarked.

Ported by: Tim Chase <tim@chase2k.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #2544
This commit is contained in:
Matthew Ahrens
2014-06-05 13:19:08 -08:00
committed by Brian Behlendorf
parent faf0f58c69
commit 9b67f60560
46 changed files with 1195 additions and 258 deletions
Download Patch File Download Diff File Expand all files Collapse all files
man/man8/zfs.8
+37 -4
View File
@@ -174,12 +174,12 @@ zfs \- configures ZFS file systems
.LP
.nf
\fBzfs\fR \fBsend\fR [\fB-DnPpRv\fR] [\fB-\fR[\fBiI\fR] \fIsnapshot\fR] \fIsnapshot\fR
\fBzfs\fR \fBsend\fR [\fB-DnPpRve\fR] [\fB-\fR[\fBiI\fR] \fIsnapshot\fR] \fIsnapshot\fR
.fi
.LP
.nf
\fBzfs\fR \fBsend\fR [\fB-i \fIsnapshot\fR|\fIbookmark\fR]\fR \fIfilesystem\fR|\fIvolume\fR|\fIsnapshot\fR
\fBzfs\fR \fBsend\fR [\fB-e\fR] [\fB-i \fIsnapshot\fR|\fIbookmark\fR]\fR \fIfilesystem\fR|\fIvolume\fR|\fIsnapshot\fR
.fi
.LP
@@ -2600,7 +2600,7 @@ See \fBzpool-features\fR(5) for details on ZFS feature flags and the
.sp
.ne 2
.na
\fBzfs send\fR [\fB-DnPpRv\fR] [\fB-\fR[\fBiI\fR] \fIsnapshot\fR] \fIsnapshot\fR
\fBzfs send\fR [\fB-DnPpRve\fR] [\fB-\fR[\fBiI\fR] \fIsnapshot\fR] \fIsnapshot\fR
.ad
.sp .6
.RS 4n
@@ -2657,6 +2657,23 @@ Generate a deduplicated stream. Blocks which would have been sent multiple times
.ne 2
.mk
.na
\fB\fB-e\fR\fR
.ad
.sp .6
.RS 4n
Generate a more compact stream by using WRITE_EMBEDDED records for blocks
which are stored more compactly on disk by the \fBembedded_data\fR pool
feature. This flag has no effect if the \fBembedded_data\fR feature is
disabled. The receiving system must have the \fBembedded_data\fR feature
enabled. If the \fBlz4_compress\fR feature is active on the sending system,
then the receiving system must have that feature enabled as well. See
\fBzpool-features\fR(5) for details on ZFS feature flags and the
\fBembedded_data\fR feature.
.RE
.sp
.ne 2
.na
\fB\fB-p\fR\fR
.ad
.sp .6
@@ -2705,7 +2722,7 @@ The format of the stream is committed. You will be able to receive your streams
.sp
.ne 2
.na
\fBzfs send\fR [\fB-i\fR \fIsnapshot\fR|\fIbookmark\fR] \fIfilesystem\fR|\fIvolume\fR|\fIsnapshot\fR
\fBzfs send\fR [\fB-e\fR] [\fB-i\fR \fIsnapshot\fR|\fIbookmark\fR] \fIfilesystem\fR|\fIvolume\fR|\fIsnapshot\fR
.ad
.sp .6
.RS 4n
@@ -2822,6 +2839,22 @@ Do not actually receive the stream. This can be useful in conjunction with the \
Force a rollback of the file system to the most recent snapshot before performing the receive operation. If receiving an incremental replication stream (for example, one generated by \fBzfs send -R -[iI]\fR), destroy snapshots and file systems that do not exist on the sending side.
.RE
.sp
.ne 2
.na
\fB\fB-e\fR\fR
.ad
.sp .6
.RS 4n
Generate a more compact stream by using WRITE_EMBEDDED records for blocks
which are stored more compactly on disk by the \fBembedded_data\fR pool
feature. This flag has no effect if the \fBembedded_data\fR feature is
disabled. The receiving system must have the \fBembedded_data\fR feature
enabled. If the \fBlz4_compress\fR feature is active on the sending system,
then the receiving system must have that feature enabled as well. See
\fBzpool-features\fR(5) for details on ZFS feature flags and the
\fBembedded_data\fR feature.
.RE
.RE
.sp