Mirroring Question (Disksuite 4.0)

Mirroring Question (Disksuite 4.0)

Post by Chri » Sat, 29 Nov 1997 04:00:00



I am having a Sun Ultra 2 with Solaris 2.5.1 and Disksuite 4.0. Further
we have an internal 4.2G SCSI harddisk and another external 4.2G SCSI
harddisk which is connected to the second controller.

On c0t0d0 I have an ordinary  system with /, swap, overlap, /var, /opt,
/usr, and /home slices installed.
Now, I`d like to mirror the whole disk to the second one (c1t2d0), with
the goal to increase availability in case of damage of one of the disk
or controllers.

I read the answerbooks an man-pages, and am a little confused now.

Ist it possible to do what I want?
What metadevices would have to be created?
It seems to me that Disksuite does`nt accept raw slices for mirroring.

Can anyone help me out?

Thanx a lot in advance
Chris

 
 
 

Mirroring Question (Disksuite 4.0)

Post by Yogesh Sosale Gundura » Sat, 29 Nov 1997 04:00:00


If your intention is to mirror the whole disk . you need not do slice
mirroring. Create two striped metadevices for each of your 4.2 GB disks.
Then combine the two to make a mirror metadevice. Using metatool gives
you a nice gui to accomplish things. But since you are mirroring a root
file system . you need to create a metadevice for c0t0d0 and reboot the
system and then mirror it the second metadevice. Make sure you have
three slices to hold the 3 replicas of the metadatabase DiskSuite needs.


> I am having a Sun Ultra 2 with Solaris 2.5.1 and Disksuite 4.0.
> Further
> we have an internal 4.2G SCSI harddisk and another external 4.2G SCSI
> harddisk which is connected to the second controller.

> On c0t0d0 I have an ordinary  system with /, swap, overlap, /var,
> /opt,
> /usr, and /home slices installed.
> Now, I`d like to mirror the whole disk to the second one (c1t2d0),
> with
> the goal to increase availability in case of damage of one of the disk

> or controllers.

> I read the answerbooks an man-pages, and am a little confused now.

> Ist it possible to do what I want?
> What metadevices would have to be created?
> It seems to me that Disksuite does`nt accept raw slices for mirroring.

> Can anyone help me out?

> Thanx a lot in advance
> Chris


 
 
 

Mirroring Question (Disksuite 4.0)

Post by Christoph Kaeg » Sat, 29 Nov 1997 04:00:00


Thank you for your answer!

Do I get this rigth?: I have to first setup one striped metadevice of
two slices on each disk, then setup the mirroring and then create my
filesystems (/, swap, /opt, /usr, etc.) on the metadevices?

Chris

*************************************************************************


> If your intention is to mirror the whole disk . you need not do slice
> mirroring. Create two striped metadevices for each of your 4.2 GB
> disks.
> Then combine the two to make a mirror metadevice. Using metatool gives

> you a nice gui to accomplish things. But since you are mirroring a
> root
> file system . you need to create a metadevice for c0t0d0 and reboot
> the
> system and then mirror it the second metadevice. Make sure you have
> three slices to hold the 3 replicas of the metadatabase DiskSuite
> needs.


> > I am having a Sun Ultra 2 with Solaris 2.5.1 and Disksuite 4.0.
> > Further
> > we have an internal 4.2G SCSI harddisk and another external 4.2G
> SCSI
> > harddisk which is connected to the second controller.

> > On c0t0d0 I have an ordinary  system with /, swap, overlap, /var,
> > /opt,
> > /usr, and /home slices installed.
> > Now, I`d like to mirror the whole disk to the second one (c1t2d0),
> > with
> > the goal to increase availability in case of damage of one of the
> disk

> > or controllers.

> > I read the answerbooks an man-pages, and am a little confused now.

> > Ist it possible to do what I want?
> > What metadevices would have to be created?
> > It seems to me that Disksuite does`nt accept raw slices for
> mirroring.

> > Can anyone help me out?

> > Thanx a lot in advance
> > Chris

 
 
 

Mirroring Question (Disksuite 4.0)

Post by Wales Won » Tue, 02 Dec 1997 04:00:00



> Do I get this rigth?: I have to first setup one striped metadevice of
> two slices on each disk, then setup the mirroring and then create my
> filesystems (/, swap, /opt, /usr, etc.) on the metadevices?

Hi Chris,

My $0.02 is to take a look at Chapter 2 of DiskSuite User's Guide.
It shows how to create a mirror for different filesystems (ordinary?
can't be umounted? root?)

Hope this can help.
--
Best Regards,
Wales Wong y???

 
 
 

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