* Re: [uml-devel] uml-patch-2.4.20-7 [not found] ` <3F512995.4050209@vgertech.com> @ 2003-09-02 19:00 ` Jeff Dike 2003-09-03 15:45 ` Matt Zimmerman 0 siblings, 1 reply; 4+ messages in thread From: Jeff Dike @ 2003-09-02 19:00 UTC (permalink / raw) To: Nuno Silva; +Cc: user-mode-linux-devel nuno.silva@vgertech.com said: > Can you give us a brief explanation on what this does? :) It's not useful at the moment. It's to support the standalone COW driver when I get around to finishing it. You will set up a COW file on the command line like cow0=/dev/ubd1,/dev/ubd0 ubd0=backing-file ubd1=cow-file Since I can't break the existing ubdx=cow-file,backing-file syntax, that will need to continue to be supported. This causes a problem with ubd1=cow-file in the first example. As the ubd driver is currently written, this will cause ubd1 to be effectively ubd1=cow-file,backing-file because it will read the backing file from the COW header. With the standalone COW driver, this is undesirable. We want ubd1 to not be interpretted as a COW file since cow0 will be doing that. So, the best thing I could think of was to make you specify ubd1 as ubd1d=cow-file which says 'this is just blocks of data, even though it looks like a COW file'. This is non-optimal since the common case in the long run (standalone COW) should be easy and not require any special extra crap, but I don't see a way of doing that without breaking everyone's scripts. Jeff ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [uml-devel] uml-patch-2.4.20-7 2003-09-02 19:00 ` [uml-devel] uml-patch-2.4.20-7 Jeff Dike @ 2003-09-03 15:45 ` Matt Zimmerman 2003-09-04 2:30 ` Jeff Dike 0 siblings, 1 reply; 4+ messages in thread From: Matt Zimmerman @ 2003-09-03 15:45 UTC (permalink / raw) To: user-mode-linux-devel On Tue, Sep 02, 2003 at 03:00:34PM -0400, Jeff Dike wrote: > Since I can't break the existing > ubdx=cow-file,backing-file > syntax, that will need to continue to be supported. Maybe it wouldn't be so bad to break the existing ubdx=cow-file syntax, though? -- - mdz ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [uml-devel] uml-patch-2.4.20-7 2003-09-03 15:45 ` Matt Zimmerman @ 2003-09-04 2:30 ` Jeff Dike 2003-09-04 3:15 ` Matt Zimmerman 0 siblings, 1 reply; 4+ messages in thread From: Jeff Dike @ 2003-09-04 2:30 UTC (permalink / raw) To: Matt Zimmerman; +Cc: user-mode-linux-devel mdz@debian.org said: > Maybe it wouldn't be so bad to break the existing > ubdx=cow-file > syntax, though? Dunno, how do I go about figuring out how bad that is? Jeff ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [uml-devel] uml-patch-2.4.20-7 2003-09-04 2:30 ` Jeff Dike @ 2003-09-04 3:15 ` Matt Zimmerman 0 siblings, 0 replies; 4+ messages in thread From: Matt Zimmerman @ 2003-09-04 3:15 UTC (permalink / raw) To: user-mode-linux-devel On Wed, Sep 03, 2003 at 10:30:11PM -0400, Jeff Dike wrote: > mdz@debian.org said: > > Maybe it wouldn't be so bad to break the existing > > ubdx=cow-file > > syntax, though? > > Dunno, how do I go about figuring out how bad that is? Float it on the mailing list, I guess... *waits* I don't hear any screaming so far. :-) (I don't use that syntax, personally) -- - mdz ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2003-09-04 3:15 UTC | newest]
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[not found] ` <3F512995.4050209@vgertech.com>
2003-09-02 19:00 ` [uml-devel] uml-patch-2.4.20-7 Jeff Dike
2003-09-03 15:45 ` Matt Zimmerman
2003-09-04 2:30 ` Jeff Dike
2003-09-04 3:15 ` Matt Zimmerman
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