Re: old raid tools dangerous with 2.6.18?

2006-10-03 Thread Neil Brown
On Sunday October 1, [EMAIL PROTECTED] wrote: Richard Bollinger [EMAIL PROTECTED] writes: It appears that raidhotadd doesn't always trigger a resync under 2.6.18. Starting with a broken raid1 mirror: Same with evms and 2.6.18. it does not trigger the raid1 resync in any case. (while

Re: Recipe for Mirrored OS Drives

2006-10-03 Thread Erik Mouw
On Sun, Oct 01, 2006 at 07:45:46PM -0400, andy liebman wrote: -- Run rsync to copy contents from your existing OS drive rsync -av /mnt/oldroot /mnt/newroot rsync -av /mnt/oldhome /mnt/newhome At least add the -H flag to copy hardlinks. -S for sparse files might also be

[no subject]

2006-10-03 Thread Jochen Oekonomopulos
Hello Neil, Ingo and [insert your name here], I try to understand the raid5 and md code and I have a question concerning the cache. There are two ways of calculating the parity: read-modify-write and reconstruct-write. In my understanding, the code only checks how many buffers it has to read

Re: Recipe for Mirrored OS Drives

2006-10-03 Thread David Greaves
Nix wrote: On 2 Oct 2006, David Greaves spake: I suggest you link from http://linux-raid.osdl.org/index.php/RAID_Boot The pages don't really have the same purpose. RAID_Boot is `how to boot your RAID system using initramfs'; this is `how to set up a RAID system in the first place', i.e.,

Re: old raid tools dangerous with 2.6.18?

2006-10-03 Thread syrius . ml
Neil Brown [EMAIL PROTECTED] writes: It appears that raidhotadd doesn't always trigger a resync under 2.6.18. Starting with a broken raid1 mirror: Same with evms and 2.6.18. it does not trigger the raid1 resync in any case. (while it does with 2.6.17) Have these tools to be updated ?