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

Re: Recipe for Mirrored OS Drives

2006-10-03 Thread Nix
On Tue, 03 Oct 2006, David Greaves prattled cheerily: > FYI I've done quite a bit on the Howto section: > http://linux-raid.osdl.org/index.php/Overview Ka wow. > It still needs a lot of work I think but it's getting there... Yeah: the `booting on RAID' and RAID_Boot could be merged, and it certa

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.

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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 for

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 use

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 >