-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 The Thursday 2007-09-20 at 19:37 -0400, Felix Miata wrote:
Additional safety of more disks unless using RAID is an illusion, and then with RAID you're right back to the limit of 14. To get 28 and safety means you need 4 disks: 2 for each set of 14 partitions, and matching devices for the RAID1. Now with 4 disks you have 4 times the opportunity for hardware failure, and 4 times the cost.
I think we might do something: use two disks in software raid configuration. Perhaps some non raid partitions (/boot?), then a big raid partition having the rest of the disk. This would appear as /dev/md0. Now, md0 can be partitioned. From /usr/src/linux/Documentation/devices.txt: 9 block Metadisk (RAID) devices 0 = /dev/md0 First metadisk group 1 = /dev/md1 Second metadisk group ... Here, the minor represents the device. I'm not sure how would partitions inside appear. I know it can be partitioned because fdisk says so: ] nimrodel:~ # fdisk /dev/md0 ] Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel ] Building a new DOS disklabel. Changes will remain in memory only, ] until you decide to write them. After that, of course, the previous ] content won't be recoverable. ] ] ] The number of cylinders for this disk is set to 781136. ] There is nothing wrong with that, but this is larger than 1024, ] and could in certain setups cause problems with: ] 1) software that runs at boot time (e.g., old versions of LILO) ] 2) booting and partitioning software from other OSs ] (e.g., DOS FDISK, OS/2 FDISK) ] Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite) I haven't tried it, not further that point. It is not ideal, of course, but... :-? might work? Of course, you can use a degraded raid of only one side, ie, one disk.
30 takes 3 devices, because 15 is only the name of the last device, not the count, which is 14, because on sd[1-4] only 3 can have filesystems.
Ouch. I hadn't noticed that "detail". We usually don't count the extended partition. Of course, we can only use partition 1..15, of which one of them is not writeable. - -- Cheers, Carlos E. R. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) Comment: Made with pgp4pine 1.76 iD8DBQFG8w58tTMYHG2NR9URAj9AAKCAMDcF4F9h1rv2nzfz8tFbEXGdpACbBZzh +6JLKaa26Xl+NS/mTcusVQQ= =WYf0 -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-factory+help@opensuse.org