Are you sure the dm-raid45 module is enabled ? Your kernel config should have at least these lines: CONFIG_MD_RAID456=m CONFIG_DM_RAID45=m
For the initramfs, I've added the module to the following files: /usr/share/initramfs-tools/hooks/dmraid ..snip.. manual_add_modules dm-mirror manual_add_modules dm-raid4-5 copy_exec /sbin/dmraid sbin ..snip.. /usr/share/initramfs-tools/scripts/local-top/dmraid ..snip.. modprobe -Q dm-mirror modprobe -Q dm-raid4-5 [ -x /sbin/dmraid ] && /sbin/dmraid -ay ..snip.. The devices and partitions show up in directory /dev/mapper, for example: /dev/mapper/isw_ibcfibahh_RAID0 /dev/mapper/isw_ibcfibahh_RAID01 /dev/mapper/isw_ibcfibahh_RAID02 /dev/mapper/isw_ibcfibahh_RAID5 /dev/mapper/isw_ibcfibahh_RAID51 /dev/mapper/isw_ibcfibahh_RAID52 RAID0 and RAID5 are the names I've given to the raid volumes in BIOS. So in my case I can run "parted /dev/mapper/isw_ibcfibahh_RAID5" to partition the raid5 volume. When dm-raid4-5 module is loaded on boot, dmesg should show something like this: [ 50.928873] raid5: automatically using best checksumming function: generic_sse [ 50.933003] generic_sse: 8728.000 MB/sec [ 50.933083] raid5: using function: generic_sse (8728.000 MB/sec) [ 50.935099] device-mapper: dm-raid45: initialized v0.2337 [ 51.329743] device-mapper: dm-raid45: /dev/sda is raid disk 0 [ 51.329832] device-mapper: dm-raid45: /dev/sdb is raid disk 1 [ 51.329917] device-mapper: dm-raid45: /dev/sdc is raid disk 2 [ 51.330003] device-mapper: dm-raid45: /dev/sdd is raid disk 3 [ 51.330090] device-mapper: dm-raid45: 128/128/256 sectors chunk/io/recovery size, 64 stripes [ 51.330219] device-mapper: dm-raid45: algorithm "xor_asm", 4 chunks with 8625MB/s [ 51.330343] device-mapper: dm-raid45: RAID5 (left asymmetric) set with net 3/4 devices [ 51.330500] device-mapper: dm-raid45: No regions to recover Steps I use install a custom kernel: 1) patch the sources :) 2) copy the .config file from the current kernel and run 'make oldconfig' 3) compile the kernel with 'make-kpkg clean && fakeroot make-kpkg --initrd --append-to-version=-custom kernel_image kernel_headers' 4) install the generated headers and image .deb files (install should automatically run update-initramfs) 5) finally run 'update-grub' I also get the "no such file directory" messages with update-initramfs and they should be nothing to worry about. -- dmraid45 target please https://bugs.launchpad.net/bugs/97655 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
