Help with ES v3 Raid1 (Mirror)

[Marc Leveille]

I have tried this all morning without success. I also tried making the
raid device using sdb1 and sdc1 as oppesed to sdb and sdc. Here is what
I am doing in exact steps because sometimes one little thing can mess
things up.

1- Fdisk sdb and create a primary partition with full size of drive and
set type to FD (Linux Raid). write and exit
2- same as step 1 but for sdc.
3- run the command to make raid device. "mdadm --create /dev/md0
--level=1 --raid-devices=2 /dev/sdb1 /dev/sdc1
4- mkfs.ext3 /dev/md0 (completes with noe errors)
5- e2fsck -f /dev/md0 (works with no errors)
6- add line in fstab
/dev/md0   /home/apps  ext3    defaults  1 2

reboot and get
   FSCK.ext3 /dev/mdo the superblock could not be read or does not
describe a correct EXT2 Filesystem.......bla bla and asks to run E2FSCK
-B 8193 

e2fsck: invalid arguement whilt trying to open /dev/md0

thanks

Marc

On Wed, 2006-02-01 at 13:40 -0200, Cleber P. de Souza wrote:
> OK.
> Put your success of failure here later.
> I had this problem one time making raid from a existing Red Hat system
> and solve in this way.
> 
> On 2/1/06, Marc Leveille <marc.leveille at nrc-cnrc.gc.ca> wrote:
> > Hi, I never ran e2fsck -f /dev/md0 after making fs on /dev/md0.
> >
> > I will try this this morning.
> >
> > Marc
> >
> > On Wed, 2006-02-01 at 10:15 -0200, Cleber P. de Souza wrote:
> > > Hi Marc.
> > >
> > > After run mdadm --create you must also run mkfs.ext3 /dev/md0 and
> > > e2fsck -f /dev/md0.
> > > So you will get OK.
> > >
> > >
> > >
> > > On 1/26/06, Marc Leveille <marc.leveille at nrc-cnrc.gc.ca> wrote:
> > > > Hi, I'm trying to setup a Raid1 mirror between 2 hard drives. I have the
> > > > following.
> > > >
> > > > 1- SDA 36gig System disk
> > > > 2- SDB 36gig blank
> > > > 3- SDC 36gig blank
> > > >
> > > > I'm trying to Mirror SDB to SDC by doing the following.
> > > >
> > > > 1- By using FDisk I created SDB1 and SDC1 on each drive.
> > > > 2- I then makefs ext3 for each partition.
> > > > 3- Then I used mkadm --create /dev/md0 --level=1
> > > > --raid-devices=2 /dev/sdb1 /dev/sdc1
> > > >
> > > > I ran watch cat /proc/mdstat until the process was completed.
> > > > 4- when it was complete I tested the mount using mount -t
> > > > ext3 /dev/md0 /home/apps and it mounted and I was able to open it.
> > > > 5- I then edited fstab with /dev/md0 /home/apps ext3 defaults 1 2 and
> > > > rebooted.
> > > > 6- I now get the following error at boot.
> > > >
> > > > FSCK.ext3 /dev/mdo the superblock could not be read or does not describe
> > > > a correct EXT2 Filesystem.......bla bla and asks to run E2FSCK -B 8193
> > > >
> > > > 7- I used Vi and comented out the mount in fstab and re-booted. I tried
> > > > to manually mount the drive the same way as (Item #4) and it now fails
> > > > Mount: Wrong FS Type.
> > > >
> > > > Any ideas as to what I need to do. Sould I use ext3 ?
> > > >
> > > > thanks
> > > >
> > > > Marc
> > > >
> > > > --
> > > > redhat-list mailing list
> > > > unsubscribe mailto:redhat-list-request at redhat.com?subject=unsubscribe
> > > > https://www.redhat.com/mailman/listinfo/redhat-list
> > > >
> > >
> > >
> > > --
> > > Cleber P. de Souza
> > >
> >
> > --
> > redhat-list mailing list
> > unsubscribe mailto:redhat-list-request at redhat.com?subject=unsubscribe
> > https://www.redhat.com/mailman/listinfo/redhat-list
> >
> 
> 
> --
> Cleber P. de Souza
>