Alberto Picon Couselo wrote 57 lines: > Hello everybody. I'm having a lot problems trying to enable snapshots on an > EXT3 Logical Volume. I was using LVM 1.0.4 and I decided to upgrade to LVM > 1.0.7 and Linux kernel 2.4.21 on a Debian 3.0 to fix it. It works here in exactly the same configuration. > What's happenning?. I have upgraded LVM to 1.0.7, compiled VFS-lock kernel > patch for LVM using LVM native utility, compiled the kernel, and everything > seems to work fine. However, snapshots do not mount correctly. My bet is that you first patched the kernel for VFS-lock and *then* patched the kernel for LVM. This undoes (parts of) the VFS-lock. The reason is as follows: - AFAICS the LVM kernel patch generator has functions as they should be in the kernel - this means the 'patch' is dynamically build by comparing the current kernel with the functions LVM wants there. - so if the VFS-lock patch is in the kernel, LVM will 'correct' it, undoing it's efforts. So I do the following dance to generate my kernel: (NOTE: I store my semi-current kernel sources at /usr/src/$VERSION/. YMMV. I also rename my kernels to ...-lvm in the makefile) | OLD_VERSION=2.4.20 | NEW_VERSION=2.4.21 | LVM_VERSION=1.0.7 | VFS_LOCK_PATCH=linux-2.4.21-VFS-lock.patch | LVM_PATCH=lvm-$LVM_VERSION-$NEW_VERSION.patch | | | # make a dir for the version, i.e. | mkdir -p /usr/src/$NEW_VERSION | cd /usr/src/$NEW_VERSION | | tar -xjf /usr/src/linux-$OLD_VERSION.tar.bz2 && | mv linux-$OLD_VERSION linux-$NEW_VERSION-lvm && | cd linux-$NEW_VERSION-lvm && | bzcat /usr/src/KERNELPATCHES/patch-$NEW_VERSION.bz2 | patch -p1 && echo OK | # add more patches? | | cd /usr/src/LVM/LVM/$LVM_VERSION | make distclean | ./configure --with-kernel_dir=/usr/src/$NEW_VERSION/linux-$NEW_VERSION-lvm | cd PATCHES | make | cp $LVM_PATCH /usr/src/KERNELPATCHES | cd /usr/src/$NEW_VERSION/linux-$NEW_VERSION-lvm | | cat /usr/src/KERNELPATCHES/$LVM_PATCH | patch -p1 && echo OK | | cat /usr/src/KERNELPATCHES/$VFS_LOCK_PATCH | patch -p1 && echo OK | | vim Makefile +/EXTRAVERSION # add -lvm | | cp /boot/config-2.4.21-lvm .config # or your base config! | make oldconfig # for new questions | # make menuconfig # if needed | | ### NOTE: IO-APIC seems to make these dma 30 timeout errors! | | export PATCH_THE_KERNEL=YES | make-kpkg --initrd --uc --us buildpackage && | make-kpkg modules_clean modules_config modules_image --uc --us | | cd .. | mv ../nvidia-kernel-*_i386.deb . | ls *.deb | | # if nvidia fails, check /usr/src/modules. And unpack the new nvidia | # modules (see their README.Debian). | | # beware! no bad nvidia allowed! | | dpkg --install *.deb | | #update /etc/lilo.conf && /sbin/lilo if you want. Mayhaps that does help you. -Wolfgang _______________________________________________ linux-lvm mailing list linux-lvm@sistina.com http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
