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Re: [dm-devel] [ANNOUNCE] multipath-tools-0.2.9

Im having some problems compiling multipathd from your latest
releases, concretely when call "__clone(child, child_stack,
CLONE_NEWNS, NULL)" is used, wich doesnt come with libc includes:

make[1]: Leaving directory
gcc-3.3 -pipe -g -Wall -Wunused -Wstrict-prototypes -DDEBUG=1
-DFLOATING_STACKS -Di386   -c -o main.o main.c
main.c: In function `get_devmaps':
main.c:237: warning: long unsigned int format, different type arg (arg 4)
main.c:237: warning: long unsigned int format, different type arg (arg 5)
main.c: In function `main':
main.c:927: warning: implicit declaration of function `__clone'
main.c:927: error: `CLONE_NEWNS' undeclared (first use in this function)
main.c:927: error: (Each undeclared identifier is reported only once
main.c:927: error: for each function it appears in.)
make: *** [main.o] Error 1

So im using 0.2.5 version. There is any fix for this? im not very well
c coder, so i tryed to change the pid varible assignament on 0.2.8
version from "pid =  sys_clone(CLONE_NEWNS, 0);" to "pid = fork();"
that compiled for me on 0.2.5 but when i started modified multipathd
0.2.8 daemon it removed mysteriously my /bin and /usr/bin, so i came
back to 0.2.5. There is any workarround about this? im interested on
new releases...

Also i would like to know how i can change the spread policy by
default, im using HP HSV100 arrays, wich must use "group_by_tur"
defined on multipathd.conf and seems to be using "multibus"

apache1:~/gfs/tmp/multipath-tools-0.2.5/multipathd# multipath -v
# all paths :
600508b4000116370000a00000c00000 (0 0 1 1) /dev/sdb [HSV100          ]
600508b4000116370000a00000c00000 (1 0 1 1) /dev/sdd [HSV100          ]
# all multipaths :
 \_(0 0 1 1) /dev/sdb [HSV100          ]
 \_(1 0 1 1) /dev/sdd [HSV100          ]
# device maps :
U:600508b4000116370000a00000c00000:0 209715200 multipath 1 round-robin
2 0 /dev/sdb /dev/sdd

Please excuse me any mistakes, i dont use to work with SANs


On Sun, 26 Sep 2004 00:14:23 +0200, christophe varoqui
<christophe varoqui free fr> wrote:
> Le samedi 25 septembre 2004 à 10:24 +0200, Bastian Blank a écrit :
> > On Sat, Sep 25, 2004 at 02:24:09AM +0200, christophe varoqui wrote:
> > >         * [multipathd] include linux/unistd.h for _syscall2
> > >           definition on RedHat systems. Remove superfluous
> > >           asm/unistd.h include
> >
> > Please don't use the _syscall macros. They describe a kernel interface
> > which is not exported by the libc and should never directly used by
> > applications. This usage also breaks on many architectures. Use the
> > syscall library call for this.
> Yes, don't worry : this ChangeLog entry is overriden. I moved from
> sys_clone to clone/clone2 just before releasing so there is no _syscall2
> user anymore.
> That said, kpartx, which is fork of util-linux' partx, still has an
> offender-from-the-past (_lseek). If you want to contribute a patch ...
> regards,
> --
> christophe varoqui <christophe varoqui free fr>
> --
> dm-devel mailing list
> dm-devel redhat com
> https://www.redhat.com/mailman/listinfo/dm-devel

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