Hi there, At the moment we I am using a 2.0.36 kernel with /sbin/mdrun v0.3d compiled for md raidtools-0.41. niess@server:/home/niess > df Filesystem 1024-blocks Used Available Capacity Mounted on /dev/sda1 97812 35085 57508 38% / /dev/md0 2981864 1043305 1784358 37% /usr /dev/md1 3974077 1453341 2315130 39% /mnt/windoofs-data /dev/md2 2981864 622068 2205595 22% /var /dev/md3 2919776 514733 2254055 19% /tmp /dev/md4 3974333 3151488 617226 84% /home /dev/sde1 101075 37057 58799 39% /mnt/root-save /dev/sdd1 101075 4824 91032 5% /var/log Five identical disks with five raid5 devices over all disks: Disk /dev/sde: 255 heads, 63 sectors, 555 cylinders Units = cylinders of 16065 * 512 bytes Device Boot Start End Blocks Id System /dev/sde1 1 13 104391 83 Linux native /dev/sde2 14 109 771120 83 Linux native /dev/sde3 110 237 1028160 83 Linux native /dev/sde4 238 555 2554335 5 Extended /dev/sde5 238 365 1028128+ 83 Linux native /dev/sde6 366 461 771088+ 83 Linux native /dev/sde7 462 555 755023+ 83 Linux native I want to upgrade to SuSe 6.2 (Kernel 2.0.10/11), a bootable raid and different partition/device sizes. My production server does not allow for much downtime, so it has to work the first time. My new estimates for good device sizes are as follows: /md0 / 100 MB RAID 1 bootable /md1 / usr+opt 3 GB RAID 5 gets completely new data /md2 /var 800 MB RAID 5 gets completely new data and some backups /md3 /tmp 800 MB RAID? gets completely new data /md4 /mnt/windoofs-data 2 GB RAID 5 gets old data /md5 /home 11 GB RAID 5 gets old data /sdxy /var/log How do you think about this setup? Does it make sense to use RAID for /tmp, /var and /mnt/windoofs-data? Speed is not much of an issue here. Would you use different sizes? The server is mostly a SAMBA server for about 50 windows computers in an office like setup. What is the minimum number of reboots and chkraids required? How is this done? Is the new RAID sub system able to use old style devices currently in use? Thats a lot of question. I�d like to see at least some of them answered. Johannes Niess
