Re: multipath-tools libmultipath/configure.c libmu ...

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On Fri, Sep 19, 2008 at 03:27:10AM -0000, bmarzins@xxxxxxxxxxxxxx wrote:
> CVSROOT:	/cvs/dm
> Module name:	multipath-tools
> Branch: 	RHEL5_FC6
> Changes by:	bmarzins@xxxxxxxxxxxxxx	2008-09-19 03:27:08
> 
> Modified files:
> 	libmultipath   : configure.c configure.h devmapper.c devmapper.h 
> 	multipathd     : cli.c cli.h cli_handlers.c cli_handlers.h 
> 	                 main.c main.h 
> 
> Log message:
> 	Fix for bz #455692. There is now a command for multipathd, 'resize map'. This
> 	does online grows or shrinks for your multipath device. It has some warts.
> 	
> 	1. It needs to remove and re-add every path in the device. This can cause two
> 	annoyances. First, if you only have one valid path, you go into an all paths
> 	down scenario. However, you will immediately re-add the path, so it won't
> 	trigger problem #2. Second, if the path is inaccessable, you may not be able to
> 	re-add it.
> 	
> 	2. You can't disable flushing on suspend for a device-mapper device, when you
> 	want to change size. This means that if all your paths are down, you will fail
> 	the queued IOs when you suspend. This is a problem with the device-mapper kernel
> 	code, and there's no real way to avoid it, except by fixing it in the kernel.
> 	
> 	This commit also has some minor fixups for 238421, and adds the ability to
> 	disable and restore queueing on all multipath devices through multipathd
> 

Benjamin,

I was wondering if you were planning to re-submit this patch to upstream git tree?
I tried to apply it and got:

patching file libmultipath/configure.c
Hunk #1 FAILED at 360.
1 out of 1 hunk FAILED -- saving rejects to file libmultipath/configure.c.rej
patching file libmultipath/configure.h
patching file libmultipath/devmapper.c
Hunk #1 succeeded at 150 (offset 20 lines).
Hunk #2 FAILED at 162.
Hunk #3 succeeded at 517 with fuzz 2 (offset 42 lines).
Hunk #4 succeeded at 894 (offset 10 lines).
1 out of 4 hunks FAILED -- saving rejects to file libmultipath/devmapper.c.rej
patching file libmultipath/devmapper.h
Hunk #1 FAILED at 4.
1 out of 1 hunk FAILED -- saving rejects to file libmultipath/devmapper.h.rej
patching file multipathd/cli.c
Hunk #1 FAILED at 131.
1 out of 1 hunk FAILED -- saving rejects to file multipathd/cli.c.rej
patching file multipathd/cli.h
Hunk #1 FAILED at 9.
Hunk #2 FAILED at 34.
2 out of 2 hunks FAILED -- saving rejects to file multipathd/cli.h.rej
patching file multipathd/cli_handlers.c
Hunk #1 FAILED at 13.
Hunk #2 FAILED at 345.
Hunk #3 FAILED at 368.
Hunk #4 FAILED at 396.
Hunk #5 succeeded at 619 (offset 42 lines).
4 out of 6 hunks FAILED -- saving rejects to file multipathd/cli_handlers.c.rej
patching file multipathd/cli_handlers.h
Hunk #1 FAILED at 14.
1 out of 1 hunk FAILED -- saving rejects to file multipathd/cli_handlers.h.rej
patching file multipathd/main.c
Hunk #1 succeeded at 147 (offset -11 lines).
Hunk #2 FAILED at 757.
1 out of 2 hunks FAILED -- saving rejects to file multipathd/main.c.rej
patching file multipathd/main.h
Hunk #1 succeeded at 9 with fuzz 2.

I haven't looked in detail on the rejects and tried to see if I can "jam" it in
correctly.

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