Hello.

I currently have a system where /, /var and /opt all are on different
filesystems. I'd now like to merge / and /var. /opt should still be a
filesystem of its own. I'd like /, /var and /opt to be metadevices.
In the system, I've got two 36G internal harddrives.

Beforehand, I created slices the way I want it to be:

partition> p
Volume: S10_v2
Current partition table (original):
Total disk cylinders available: 24620 + 2 (reserved cylinders)

Part Tag Flag Cylinders Size Blocks
0 root wm 0 - 7297 10.05GB (7298/0/0) 21083922
1 swap wu 7298 - 8023 1.00GB (726/0/0) 2097414
2 backup wm 0 - 24619 33.92GB (24620/0/0) 71127180
3 unassigned wu 0 0 (0/0/0) 0
4 unassigned wm 0 0 (0/0/0) 0
5 alternates wm 8024 - 20727 17.50GB (12704/0/0) 36701856
6 home wm 21707 - 24610 4.00GB (2904/0/0) 8389656
7 unassigned wu 24611 - 24619 12.70MB (9/0/0) 26001

After having sliced the disk the way I want it, I created (unused)
metadevices.

$ metastat d300
d300: Mirror
Submirror 0: d20
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 21083922 blocks (10 GB)

d20: Submirror of d300
State: Okay
Size: 21083922 blocks (10 GB)
Stripe 0:
Device Start Block Dbase State Reloc Hot Spare
c1t1d0s0 0 No Okay Yes


Device Relocation Information:
Device Reloc Device ID
c1t1d0 Yes id1,sd@w4849544143484920444b3332454a2d33364e432020 2020203433344e35363431

After that, I ran lucreate

lucreate -c S10_v1 -n S10_v2 -m /:/dev/md/dsk/d300:ufs

This failed, because it tried to put /opt on d300 as well. There's not
enough space for /opt on / (ie. d300).

$ df /opt
/opt (/dev/md/dsk/d250 ): 3845626 blocks 2036299 files

How do I make it so, that lucreate uses the same /opt, ie. d250, for
the new BE S10_v2 and the old S10_v1?

I tried:

lucreate -c S10_v1 -n S10_v2 -m /:/dev/md/dsk/d300:ufs \
-m /opt:/dev/md/dsk/d250reserve

Discovering physical storage devices
Discovering logical storage devices
Cross referencing storage devices with boot environment configurations
Determining types of file systems supported
Validating file system requests
ERROR: the file system on device </dev/md/dsk/d250> is currently mounted at </opt>
ERROR: device </dev/md/dsk/d250> is not available for use with mount point </opt>
ERROR: cannot create new boot environment using file systems as configured
ERROR: please review all file system configuration options
ERROR: cannot create new boot environment using options provided

$ metastat d250
d250: Mirror
Submirror 0: d25
State: Okay
Submirror 1: d15
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 36701856 blocks (17 GB)

d25: Submirror of d250
State: Okay
Size: 36701856 blocks (17 GB)
Stripe 0:
Device Start Block Dbase State Reloc Hot Spare
c1t1d0s5 0 No Okay Yes


d15: Submirror of d250
State: Okay
Size: 39530187 blocks (18 GB)
Stripe 0:
Device Start Block Dbase State Reloc Hot Spare
c1t0d0s5 0 No Okay Yes


Device Relocation Information:
Device Reloc Device ID
c1t1d0 Yes id1,sd@w4849544143484920444b3332454a2d33364e432020 2020203433344e35363431
c1t0d0 Yes id1,sd@SSEAGATE_ST336607LSUN36G_3JA659W600007412LQ FN


I do not want to break the d250 mirror.

What would I need to do, so that I get what I want?

Thanks a lot,

Michael

Michael Schmarck <usenet-michael@schmarck.cn> writes:
> I currently have a system where /, /var and /opt all are on different
> filesystems. I'd now like to merge / and /var. /opt should still be a
> filesystem of its own. I'd like /, /var and /opt to be metadevices.
> In the system, I've got two 36G internal harddrives.

Since /opt can contain objects delivered with Solaris (just like
/var), and since the whole point of Live Upgrade is to modify only an
inactive copy of the Solaris bits (not the running system), this means
that /opt itself must be unshared between boot environments.

That's why LU refuses to allow a shared /opt. It's the same (as far
as LU is concerned) as sharing /usr -- an infeasible configuration.

However, you can still do this, if you're very careful. You can't
share /opt, but you *can* share subdirectories.

So, don't put /opt on a separate file system. Keep it on the root
file system, and use mounts underneath (for /opt/csw and the like).
Just make sure you don't try to share /opt/SUNWmlib or anything else
delivered with the system, or you'll have chaos.

If you're using S10 or better, ZFS is a great way to create those
subdirectory mounts. Otherwise, put them over in /export/ (or some
suitable other file system) and use lofs entries in vfstab to mount
them into /opt:

/export/home/csw - /opt/csw lofs 2 yes -

One very important note: no matter what you do, there'll just be one
packaging database that will be correct on the system, so be very
careful. An upgrade scheme that works looks like this:

1. Upgrade all non-Solaris software in /opt/ as desired.
2. Use lumake to copy over the BE.
3. Use luupgrade to upgrade the inactive BE.
4. Use luactivate+init 6 to switch BEs.
5. Continue normal operation.

Do not touch the non-Solaris packaged /opt software between steps 2
and 4, or you'll end up with an inconsistent packaging database.

--
James Carlson, Solaris Networking <james.d.carlson@sun.com>
Sun Microsystems / 35 Network Drive 71.232W Vox +1 781 442 2084
MS UBUR02-212 / Burlington MA 01803-2757 42.496N Fax +1 781 442 1677