[OpenAFS-devel] 1.3.x: vos clone on RO volumes ...
Jason A. Dillaman
dillaman@umich.edu
Wed, 8 Jun 2005 16:19:58 -0400
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We are looking forward to being able to use the "vos copy" / "vos shadow"
and "vos clone" commands of OpenAFS 1.3.x to perform incremental, disk-based
remote backups of our file servers in order to move away from tape-based
backup storage. Since we would use the "vos copy" command on R/W volumes to
create pseudo-backup volumes, we would also like to be able to use the
"-readonly" parameter to mark the newly copied volumes as RO.
We also would like to use the "vos clone" command to create snapshots of a
copied volume before it is over-written by the "vos shadow" command.
Unfortunately, the current code prohibits one from making a clone of a RO
volume. Does anybody know of an underlying structural reason why one cannot
clone a RO volume?
Jason A. Dillaman
__________________
ITCS
University of Michigan
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<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>We are looking forward to being able to use the =
“vos
copy” / ”vos shadow” and “vos clone” =
commands of OpenAFS
1.3.x to perform incremental, disk-based remote backups of our file =
servers in
order to move away from tape-based backup storage. Since we would =
use the
“vos copy” command on R/W volumes to create pseudo-backup =
volumes,
we would also like to be able to use the “-readonly” =
parameter to
mark the newly copied volumes as RO. <o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>We also would like to use the “vos clone” =
command
to create snapshots of a copied volume before it is over-written by the =
“vos
shadow” command. Unfortunately, the current code prohibits =
one from
making a clone of a RO volume. Does anybody know of an underlying =
structural
reason why one cannot clone a RO volume? =
<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Jason A. Dillaman<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>__________________<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>ITCS<o:p></o:p></span></font></p>
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w:st=3D"on"><font size=3D2
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style=3D'font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p=
>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
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