On Monday 28 June 2010 21:14:32 Magicloud Magiclouds wrote: > Hi, > I am trying to make a debian sid system with btrfs as root. Make sure it is Sid. There were some changes made to dpkg in order to prevent package meta-data corruption from occurring on btrfs. Btrfs behaves differently from most other file systems in the way dirents are returned while the directory is being modified. I can't remember the exact dpkg version these changes were made. > I installed debian sid on ext3 root, compiled 2.6.34 kernel. Booted > to 2.6.34, it mounted a btrfs data partition right. > Then I booted into debian live, converted the root to btrfs, rebooted. > I got this: > FATAL: Error inserting btrfs > (/lib/modules/2.6.34/kernel/fs/btrfs/btrfs.ko): Unknown symbol in > module, or unknown parameter (see dmesg) > modprobe: FATAL: Error inserting btrfs > (/lib/modules/2.6.34/kernel/fs/btrfs/btrfs.ko): Unknown symbol in > module, or unknown parameter (see dmesg) > Any idea? Thanks. Oh, yeah. I ran into this as well. The btrfs module needs to load then crc32c module in order to resolve some symbols. Unfortunately, this seems to be done in a way that depmod does not detect, even in Sid. Because of this, your initramfs may not have the crc32c module available since it is not detected as a dependency of the btrfs module. Add it to /etc/initramfs- tools/modules to force the initramfs to include that module. I believe you need a fairly recent initramfs-tools in order for it to correctly include even the btrfs module, so it maybe be best to use my /etc/initramfs-tools/modules in its entirety: btrfs libcrc32c zlib_deflate crc32c Sorry there's no bug on this. Perhaps there should be one, but I don't know if it is a problem with the btrfs module or depmod. I am currently running btrfs as my root file system. While I have not noticed any breakage I could blame specifically on btrfs, I fear that it may be silently corrupting files in some cases. You may want to use debsums in a cron job, tripwire, or some other monitoring. I had to recover from an unrelated issue and noticed a few packages that had debsums errors during diagnosis. -- Boyd Stephen Smith Jr. ,= ,-_-. =. bss@iguanasuicide.net ((_/)o o(\_)) ICQ: 514984 YM/AIM: DaTwinkDaddy `-'(. .)`-' http://iguanasuicide.net/ \_/
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