[OpenAFS-devel] Patches for Openafs compression support Part II
Sven Oehme
oehmes@de.ibm.com
Tue, 4 Jan 2005 20:43:58 +0100
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Hi ,
here is an update to the compression support and some answers to questions
:-)
Purpose:
- patch for versions of openafs 1.2.13 and 1.3.77 to support gzip and bz2
compression at "vos dump", "vos release", "vos restore" and "vos move".
we still haven't prepared the changes for WinNT (will come with next
update
- haven't done any changes to libadmin (AFS API) yet.
- these patches are full patches, not upgrade. Has to be applied on the
original version (of src/volser directory).
Installation:
cd openafs-1.2.13
(where the src folder and configure script is in openafs-1.2.13)
patch -p1 <../openafs-1.2.13z.patch
[recompile the source]
Modified binaries are: "vos" and "volserver"
The command "vos" has the new flag "-z [1..9]" and "-bz2 [1..9]", and
volserver has the support with its modified interface.
The compression support is directly over the RPC call layer.
The modified binaries must work fully with the unpatched openafs versions.
Implementation: At some places [dumpstuff.c, vos.c] rx_Read and rx_Write
has been replaced to the new wrapping functions which support compression.
See "ziorx.[c,h]".
Sven
-------------------------------------------------------------------------------------------------------------------------
Dept. A141, TG/SSG EMEA AIS Strategy and Architecture
Development Leader Stonehenge
IBM intranet ---> http://w3.ais.mainz.de.ibm.com/stonehenge/
internet ---> http://www-5.ibm.com/services/de/its/filestore.html
Phone (+49)-6131-84-3151
Fax (+49)-6131-84-6708
Mobil (+49)-171-970-6664
E-Mail : oehmes@de.ibm.com
Mitch Collinsworth <mitch@ccmr.cornell.edu>
Sent by: openafs-devel-admin@openafs.org
04/01/2005 19:31
To
Sven Oehme/Germany/IBM@IBMDE
cc
openafs-devel@openafs.org
Subject
Re: [OpenAFS-devel] Patches for Openafs compression support
On Wed, 22 Dec 2004, Sven Oehme wrote:
> we have started a new project to enhance the data transfer (first on
> volume level) to slow link connected sites.
> we implemented the gzip algorithm and will add bzip2 compression later.
>
> i have attached two patches for Openafs 1.2.13 and 1.3.77 to add gzip
> compression to vos dump , release and restore
Question: How is it decided when to compress and when to not? Does
the invoker have to request it, is it done by default, etc?
-Mitch
_______________________________________________
OpenAFS-devel mailing list
OpenAFS-devel@openafs.org
https://lists.openafs.org/mailman/listinfo/openafs-devel
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<br><font size=2 face="sans-serif">Hi ,</font>
<br>
<br><font size=2 face="sans-serif">here is an update to the compression
support and some answers to questions :-) </font>
<br>
<div>
<br><font size=2 face="sans-serif">Purpose:<br>
- patch for versions of openafs 1.2.13 and 1.3.77 to support gzip and bz2
compression at "vos dump", "vos release", "vos
restore" and "vos move".</font>
<br>
<br><font size=2 face="sans-serif">we still haven't prepared the changes
for WinNT (will come with next update<br>
- haven't done any changes to libadmin (AFS API) yet.<br>
- these patches are full patches, not upgrade. Has to be applied on the<br>
original version (of src/volser directory).</font>
<br>
<br><font size=2 face="sans-serif">Installation:<br>
cd openafs-1.2.13<br>
(where the src folder and configure script is in openafs-1.2.13)<br>
patch -p1 <../openafs-1.2.13z.patch<br>
[recompile the source]</font>
<br>
<br><font size=2 face="sans-serif">Modified binaries are: "vos"
and "volserver"<br>
The command "vos" has the new flag "-z [1..9]" and
"-bz2 [1..9]", and volserver has the support with its modified
interface.<br>
The compression support is directly over the RPC call layer.<br>
The modified binaries must work fully with the unpatched openafs versions.</font>
<br>
<br><font size=2 face="sans-serif">Implementation: At some places [dumpstuff.c,
vos.c] rx_Read and rx_Write has been replaced to the new wrapping functions
which support compression. See "ziorx.[c,h]".</font>
<br>
<br>
<br>
<br><font size=2 face="sans-serif">Sven</font>
<br><font size=2 face="sans-serif"><br>
-------------------------------------------------------------------------------------------------------------------------<br>
Dept. A141, TG/SSG EMEA AIS Strategy and Architecture<br>
Development Leader Stonehenge <br>
IBM intranet ---> http://w3.ais.mainz.de.ibm.com/stonehenge/<br>
internet ---> http://www-5.ibm.com/services/de/its/filestore.html<br>
Phone (+49)-6131-84-3151<br>
Fax (+49)-6131-84-6708<br>
Mobil (+49)-171-970-6664<br>
E-Mail : oehmes@de.ibm.com</font>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td width=40%><font size=1 face="sans-serif"><b>Mitch Collinsworth <mitch@ccmr.cornell.edu></b>
</font>
<br><font size=1 face="sans-serif">Sent by: openafs-devel-admin@openafs.org</font>
<p><font size=1 face="sans-serif">04/01/2005 19:31</font>
<td width=59%>
<table width=100%>
<tr>
<td>
<div align=right><font size=1 face="sans-serif">To</font></div>
<td valign=top><font size=1 face="sans-serif">Sven Oehme/Germany/IBM@IBMDE</font>
<tr>
<td>
<div align=right><font size=1 face="sans-serif">cc</font></div>
<td valign=top><font size=1 face="sans-serif">openafs-devel@openafs.org</font>
<tr>
<td>
<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td valign=top><font size=1 face="sans-serif">Re: [OpenAFS-devel] Patches
for Openafs compression support</font></table>
<br>
<table>
<tr valign=top>
<td>
<td></table>
<br></table>
<br>
<br>
<br><font size=2><tt><br>
On Wed, 22 Dec 2004, Sven Oehme wrote:<br>
<br>
> we have started a new project to enhance the data transfer (first
on<br>
> volume level) to slow link connected sites.<br>
> we implemented the gzip algorithm and will add bzip2 compression later.<br>
><br>
> i have attached two patches for Openafs 1.2.13 and 1.3.77 to add gzip<br>
> compression to vos dump , release and restore<br>
<br>
Question: How is it decided when to compress and when to not? Does<br>
the invoker have to request it, is it done by default, etc?<br>
<br>
-Mitch<br>
_______________________________________________<br>
OpenAFS-devel mailing list<br>
OpenAFS-devel@openafs.org<br>
https://lists.openafs.org/mailman/listinfo/openafs-devel<br>
</tt></font>
<br></div>
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