ceph-dencoder: man page

Signed-off-by: Sage Weil <sage@newdream.net>

2 files changed, 165 insertions, 1 deletions

diff --git a/man/Makefile.am b/man/Makefile.am
index 033f9fc8ccc..81606ff24b7 100644
--- a/man/Makefile.am
+++ b/man/Makefile.am
@@ -22,4 +22,5 @@ dist_man_MANS = \
 	rbd.8 \
 	ceph-clsinfo.8 \
 	ceph-debugpack.8 \
-	cephfs.8
+	cephfs.8 \
+	ceph-dencoder.8
diff --git a/man/ceph-dencoder.8 b/man/ceph-dencoder.8
new file mode 100644
index 00000000000..3752bc6752d
--- /dev/null
+++ b/man/ceph-dencoder.8
@@ -0,0 +1,163 @@
+.TH "CEPH-DENCODER" "8" "February 21, 2012" "dev" "Ceph"
+.SH NAME
+ceph-dencoder \- ceph encoder/decoder utility
+.
+.nr rst2man-indent-level 0
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+.de1 rstReportMargin
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+..
+.de1 INDENT
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+.de UNINDENT
+. RE
+.\" indent \\n[an-margin]
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+.nr rst2man-indent-level -1
+.\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
+.in \\n[rst2man-indent\\n[rst2man-indent-level]]u
+..
+.\" Man page generated from reStructeredText.
+.
+.SH SYNOPSIS
+.nf
+\fBceph\-dencoder\fP [commands...]
+.fi
+.sp
+.SH DESCRIPTION
+.sp
+\fBceph\-dencoder\fP is a utility to encode, decode, and dump ceph data
+structures.  It is used for debugging and for testing inter\-version
+compatibility.
+.sp
+\fBceph\-dencoder\fP takes a simple list of commands and performs them
+in order.
+.SH COMMANDS
+.INDENT 0.0
+.TP
+.B version
+Print the version string for the \fBceph\-dencoder\fP binary.
+.UNINDENT
+.INDENT 0.0
+.TP
+.B import <file>
+Read a binary blob of encoded data from the given file.  It will be
+placed in an in\-memory buffer.
+.UNINDENT
+.INDENT 0.0
+.TP
+.B export <file>
+Write the contents of the current in\-memory buffer to the given
+file.
+.UNINDENT
+.INDENT 0.0
+.TP
+.B list_types
+List the data types known to this build of \fBceph\-dencoder\fP.
+.UNINDENT
+.INDENT 0.0
+.TP
+.B type <name>
+Select the given type for future \fBencode\fP or \fBdecode\fP operations.
+.UNINDENT
+.INDENT 0.0
+.TP
+.B decode
+Decode the contents of the in\-memory buffer into an instance of the
+previously selected type.  If there is an error, report it.
+.UNINDENT
+.INDENT 0.0
+.TP
+.B encode
+Encode the contents of the in\-memory instance of the previously
+selected type to the in\-memory buffer.
+.UNINDENT
+.INDENT 0.0
+.TP
+.B dump_json
+Print a JSON\-formatted description of the in\-memory object.
+.UNINDENT
+.INDENT 0.0
+.TP
+.B count_tests
+Print the number of built\-in test instances of the previosly
+selected type that \fBceph\-dencoder\fP is able to generate.
+.UNINDENT
+.INDENT 0.0
+.TP
+.B select_test <n>
+Select the given build\-in test instance as a the in\-memory instance
+of the type.
+.UNINDENT
+.INDENT 0.0
+.TP
+.B get_features
+Print the decimal value of the feature set supported by this version
+of \fBceph\-dencoder\fP.  Each bit represents a feature.  These correspond to
+CEPH_FEATURE_* defines in src/include/ceph_features.h.
+.UNINDENT
+.INDENT 0.0
+.TP
+.B set_features <f>
+Set the feature bits provided to \fBencode\fP to \fIf\fP.  This allows
+you to encode objects such that they can be understood by old
+versions of the software (for those types that support it).
+.UNINDENT
+.SH EXAMPLE
+.sp
+Say you want to examine an attribute on an object stored by \fBceph\-osd\fP.  You can do:
+.sp
+.nf
+.ft C
+$ cd /mnt/osd.12/current/2.b_head
+$ attr \-l foo_bar_head_EFE6384B
+Attribute "ceph.snapset" has a 31 byte value for foo_bar_head_EFE6384B
+Attribute "ceph._" has a 195 byte value for foo_bar_head_EFE6384B
+$ attr foo_bar_head_EFE6384B \-g ceph._ \-q > /tmp/a
+$ ceph\-dencoder type object_info_t import /tmp/a decode dump_json
+{ "oid": { "oid": "foo",
+      "key": "bar",
+      "snapid": \-2,
+      "hash": 4024842315,
+      "max": 0},
+  "locator": { "pool": 2,
+      "preferred": \-1,
+      "key": "bar"},
+  "category": "",
+  "version": "9\(aq1",
+  "prior_version": "0\(aq0",
+  "last_reqid": "client.4116.0:1",
+  "size": 1681,
+  "mtime": "2012\-02\-21 08:58:23.666639",
+  "lost": 0,
+  "wrlock_by": "unknown.0.0:0",
+  "snaps": [],
+  "truncate_seq": 0,
+  "truncate_size": 0,
+  "watchers": {}}
+.ft P
+.fi
+.SH AVAILABILITY
+.sp
+\fBceph\-dencoder\fP is part of the Ceph distributed file system. Please
+refer to the Ceph wiki at \fI\%http://ceph.newdream.net/wiki\fP for more
+information.
+.SH SEE ALSO
+.sp
+\fBceph\fP(8)
+.SH COPYRIGHT
+2011, New Dream Network
+.\" Generated by docutils manpage writer.
+.\" 
+.