[linux-lvm] Problem at compiling kernel 2.4.18 with lvm 1.0.7

[Krisztian Gyoerffy]

Hi LVM friends,


I have problems with the following scenario:

- I use SuSE linux 7.1 (I know, this might be a bit old, but I follow
the rule "never touch a running system") with kernel 2.4.16 and lvm
1.0.7

- Since SuSE rolled out the latest kernel for 7.1 and I would like to
keep my OS up to date I installed the 2.4.18 kernel source from SuSE on
my machine

- I tried to patch the kernel with the LVM 1.0.7, so I executed exactly
the steps written in INSTALL and PATCH/README. Everything was ok

- Then I configured the rest of the kernel and tried to compile. But
after a while, when it was compiling the LVM stuff, it stopped compiling
with the following message:

gcc -D__KERNEL__ -I/usr/src/linux-2.4.18.SuSE/include -Wall
-Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common
-fomit-frame-pointer -pipe -mpreferred-stack-boundary=2 -march=i686
-DKBUILD_BASENAME=lvm  -c -o lvm.o lvm.c
gcc -D__KERNEL__ -I/usr/src/linux-2.4.18.SuSE/include -Wall
-Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common
-fomit-frame-pointer -pipe -mpreferred-stack-boundary=2 -march=i686
-DKBUILD_BASENAME=lvm_snap  -c -o lvm-snap.o lvm-snap.c
lvm-snap.c: In function `lvm_snapshot_COW':
lvm-snap.c:365: structure has no member named `blocks'
make[3]: *** [lvm-snap.o] Error 1
make[3]: Leaving directory 
`/usr/src/linux-2.4.18.SuSE/drivers/md'
make[2]: *** [first_rule] Error 2
make[2]: Leaving directory 
`/usr/src/linux-2.4.18.SuSE/drivers/md'
make[1]: *** [_subdir_md] Error 2
make[1]: Leaving directory 
`/usr/src/linux-2.4.18.SuSE/drivers'
make: *** [_dir_drivers] Error 2

Afterwards I looked into the patch file, and into the lvm-snap.c at the
given position, line 365. There is the reference to the "blocks"
variable of the iobuf structure. This iobuf structure is defined in the
/usr/src/linux/include/linux/iobuf.h header file. But this header file
is completly different in the source of the 2.4.18 kernel than in the
source of the 2.4.16 kernel, where the patch and compiling were ok.

Do you have any idea what can I do to get it compiled?

I attach the lvm patch file generated by make and the iobuf.h file for
both versions 2.4.16 and 2.4.18.


Hope to hear from you soon, and thanks in advance


Krisztian

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