Re: raidhotadd and RAID1

[Alvin Oga <aoga@Maggie.Linux-Consulting.com>]

hi ya patrick

yeah... raidhotadd .... i just am too lazy to go look up
the latest commands... keeps changing  :-)
and new ones added each year ...
( nope, i dont use them commands too often so far )

if you can do your raidhotadd  and it works ??
	cat /proc/mdstat  --> what does it say

write a huge 3GB file to the raid array, take it down
and see if the 3GB is corrupt etc.. 
	- lots o testing ...

	- donno why it wont "stick"  -- maybe something
	wrong with /etc/raidtab  or wrong partition type
	for /dev/hdg ??? ( should be fd ( raid autodetect )
	or something like it  ( fdisk, cfdsisk, ... )

	- if its based on bios, hw raid.... ignore everything
	in here ... bios hw raid doesnt work ... and doesnt
	need any of these commands/files

- reboot with only one disk for a good test..

c ya
alvin

On Sun, 1 Sep 2002, patrick wrote:

> --- Alvin Oga <aoga@Maggie.Linux-Consulting.com> wrote:
> > 
> > hi ya michael
> > 
> > -- looks like we have a mis-communication.. lets try it again
> > 
> > my understanding so far..
> > 
> > - you had sda and sdb running as raid1 ( mirroring ) before 
> > 	- if this not the case... all bets are off
> > 
> > - than sdb dies .... you replaced it ...
> > 
> > and now we are trying to rebuild the raid1 as it should be
> > ( that the system can boot off either sda or sdb
> > 	- simply doing something like  "hotswapadd /dev/sdb" 
> > 	will automatically do all the magic to rebuild the raid
> > 	as it was before the disk crashed
> > 
> 
> Hi Alvin,
> 
> I've never heard of "hotswapadd", did you mean "raidhotadd" ?
> 
> I also have raid-1 problems. raid-0 gets started fine, but raid-1
> starts in degraded mode, using only hde.  (started after I had to
> rebuild the partition table on hdg)
> I can manually raidhotadd /dev/md? /dev/hdg?
> which restores the arrays fine, but it doesn't 'stick'.  I have to
> raidhotadd after every boot.
>