zfs discuss - Oct 2009 - How to resize ZFS partion or add a new one?

Hi,

I have the following partions on my laptop, Inspiron 6000, from fdisk:

          1                 Other OS          0    11      12      0
          2                 EXT LBA          12  2561    2550     26
          3       Active    Solaris2       2562  9728    7167     74

First one is for Dell utilities. Second one is NTFS and the third is ZFS.
I am currently using OpenSolaris 2009.06 installed on the partition 3#.
When I installed OpenSolaris I kept the 2# just in case I wanted also to install
Windows, but I have realized I don''t need it nevermore! So, I would
like to merge 2# and 3# to get more disk space in OpenSolaris.

Is it possible to eliminate the NTFS partition and add it to the ZFS partition?

Thanks in advance and regards,
Julio
-- 
This message posted from opensolaris.org

Hi--

Unfortunately, you cannot change the partitioning underneath your pool.

I don''t see any way of resizing this partition except for backing up
your data, repartitioning the disk, and reinstalling Opensolaris
2009.06.

Maybe someone else has a better idea...

Cindy

On 10/13/09 06:32, Julio wrote:
> Hi,
> 
> I have the following partions on my laptop, Inspiron 6000, from fdisk:
> 
>           1                 Other OS          0    11      12      0
>           2                 EXT LBA          12  2561    2550     26
>           3       Active    Solaris2       2562  9728    7167     74
> 
> First one is for Dell utilities. Second one is NTFS and the third is ZFS.
> I am currently using OpenSolaris 2009.06 installed on the partition 3#.
> When I installed OpenSolaris I kept the 2# just in case I wanted also to
install Windows, but I have realized I don''t need it nevermore! So, I
would like to merge 2# and 3# to get more disk space in OpenSolaris.
> 
> Is it possible to eliminate the NTFS partition and add it to the ZFS
partition?
> 
> Thanks in advance and regards,
> Julio

I think zpool add 
should work for you
google it

zpool add rpool yourNTFSpartition
-- 
This message posted from opensolaris.org

Except that you can''t add a disk or partition to a root pool:

# zpool add rpool c1t1d0s0
cannot add to ''rpool'': root pool can not have multiple vdevs
or separate
logs

He could try to attach the partition to his existing pool, I''m not sure
how, and this would only create a mirrored root pool, it would not
expand the root pool partition space.

cs

On 10/13/09 10:34, dirk schelfhout wrote:
> I think zpool add 
> should work for you
> google it
> 
> zpool add rpool yourNTFSpartition

My answer is incomplete.

You can use the zpool attach command to attach another disk
slice to a root pool''s disk slice to expand the pool size after
the smaller disk is detached.

On Julio''s laptop, I don''t think think he can attach another
fdisk partition to his root pool. I think he needs to backup
his pool, reconfigure and expand the solaris2 partition, and
then reinstall OpenSolaris.

Cindy

On 10/13/09 10:47, Cindy Swearingen wrote:
> Except that you can''t add a disk or partition to a root pool:
> 
> # zpool add rpool c1t1d0s0
> cannot add to ''rpool'': root pool can not have multiple
vdevs or separate
> logs
> 
> He could try to attach the partition to his existing pool, I''m not
sure
> how, and this would only create a mirrored root pool, it would not
> expand the root pool partition space.
> 
> cs
> 
> On 10/13/09 10:34, dirk schelfhout wrote:
>> I think zpool add should work for you
>> google it
>>
>> zpool add rpool yourNTFSpartition
> _______________________________________________
> zfs-discuss mailing list
> zfs-discuss at opensolaris.org
> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

On Tue, Oct 13, 2009 at 05:32:35AM -0700, Julio wrote:
> Hi,
> 
> I have the following partions on my laptop, Inspiron 6000, from fdisk:
> 
>           1                 Other OS          0    11      12      0
>           2                 EXT LBA          12  2561    2550     26
>           3       Active    Solaris2       2562  9728    7167     74
> 
> First one is for Dell utilities. Second one is NTFS and the third is ZFS.
> I am currently using OpenSolaris 2009.06 installed on the partition 3#.
> When I installed OpenSolaris I kept the 2# just in case I wanted also to
install Windows, but I have realized I don''t need it nevermore! So, I
would like to merge 2# and 3# to get more disk space in OpenSolaris.
> 
> Is it possible to eliminate the NTFS partition and add it to the ZFS
partition?
Possible, but not easy.  The Solaris partition must be continuous and at
the beginning of the partition.  You''d need a tool that could move the
data in partition 3 to start at cylinder 12.  Since the move distance is
less than the size to be moved, you have to do it carefully.  I''m not
sure what tools are out there that would make that move easy (something
like Partition Magic?)

You could do it naively with ''dd'' (while booted from another
disk), but
if you crashed in the  middle, you''d have problems knowing how to pick
up.  Better would be to do it in chunks and keep track.

Assuming you did that, you could then go through all the hoops to expand
the fdisk partition, then expand the VTOC label inside, then make use of
the added space.

Not something I''d want to attempt without a backup and some testing.

-- 
Darren

Julio wrote:
> Hi,
>
> I have the following partions on my laptop, Inspiron 6000, from fdisk:
>
>           1                 Other OS          0    11      12      0
>           2                 EXT LBA          12  2561    2550     26
>           3       Active    Solaris2       2562  9728    7167     74
>
> First one is for Dell utilities. Second one is NTFS and the third is ZFS.
> I am currently using OpenSolaris 2009.06 installed on the partition 3#.
> When I installed OpenSolaris I kept the 2# just in case I wanted also to
install Windows, but I have realized I don''t need it nevermore! So, I
would like to merge 2# and 3# to get more disk space in OpenSolaris.
>
> Is it possible to eliminate the NTFS partition and add it to the ZFS
partition?
>
> Thanks in advance and regards,
> Julio
>   
Why don''t you just format partition 2 to zfs, then add it to pool 
Solaris2 or rpool, whatever it''s named.

Paul

Thanks to all for the replies.

I got a lot of stuff configured and running fine, so I am not willing to
reinstall for now :-).
I also thought in Partition Magic but it seems not to manage ZFS. So, I think I
will try to format the NTFS partition to ZFS and then add it to the pool.

I will let you know the results.

Regards,
Julio.
-- 
This message posted from opensolaris.org

Julio wrote:
> Thanks to all for the replies.
> 
> I got a lot of stuff configured and running fine, so I am not willing to
reinstall for now :-).
> I also thought in Partition Magic but it seems not to manage ZFS. So, I
think I will try to format the NTFS partition to ZFS and then add it to the
pool.
If this is your root pool you can''t make anything other than a mirror.

If the free space at the start of the disk before the existing ZFS fdisk 
partition is the same size or larger than the ZFS one you should able to 
get the following to work:

1. Add the current NFS partition as a mirror of the existing ZFS one:
	eg	zpool attach rpool c0d0s0 c0d0p1	
1.1 Add a boot block with installgrub to the old NTFS side of the mirror
1.2 For good measure run bootadm update-archive (shouldn''t be needed
but
worth doing just to be sure)

2. Wait until ''zpool status'' tells you that the resilver is
complete.

3. Now detach the original ZFS fdisk partition leaving the one that
    was the old NTFS partition
  	eg	zpool deatch rpool c0d0s0

4. Now boot from LiveCD and repartition (just fdisk alone should be 
enough) to delete the old ZFS partition and make the old NTFS one the 
size of the old NTFS one and the ZFS one together.  Making very sure it 
starts in exactly the same place the old NTFS one did.  Making sure it 
is tagged Solaris2 not NTFS.

5. Reboot the system and the ZFS pool should have expanded to the size 
of the original two partitions.

If it hasn''t run ''zpool autoexpand=on rpool''

Note that this will only work if the original NTFS partition that is 
before the ZFS partition in the fdisk layout is at least the same size 
as the current ZFS fdisk partition for rpool.  If it is smaller then 
this won''t work and shouldn''t be attempted (though step 1 will
fail).

-- 
Darren J Moffat

2009/10/15 Darren J Moffat <darrenm at opensolaris.org>
> Julio wrote:
>
>> Thanks to all for the replies.
>>
>> I got a lot of stuff configured and running fine, so I am not willing
to
>> reinstall for now :-).
>> I also thought in Partition Magic but it seems not to manage ZFS. So, I
>> think I will try to format the NTFS partition to ZFS and then add it to
the
>> pool.
>>
>
> If this is your root pool you can''t make anything other than a
mirror.
>
> If the free space at the start of the disk before the existing ZFS fdisk
> partition is the same size or larger than the ZFS one you should able to
get
> the following to work:
>
I''m newbie, but doesn''t provided output from fdisk (see below)
show that the
NTFS partition is smaller (26% vs 74%)? In the worst case... isn''t
there
another option? Something like - create new pool, "zfs send R...|zfs
recv.."
old root pool to new pool then "installgrub" and "bootadm
update-archive
-R". See the link below...

http://www.solarisinternals.com/wiki/index.php/ZFS_Troubleshooting_Guide#ZFS_Root_Pool_Recovery

> 1. Add the current NFS partition as a mirror of the existing ZFS one:
>        eg      zpool attach rpool c0d0s0 c0d0p1
> 1.1 Add a boot block with installgrub to the old NTFS side of the mirror
> 1.2 For good measure run bootadm update-archive (shouldn''t be
needed but
> worth doing just to be sure)
>
> 2. Wait until ''zpool status'' tells you that the resilver
is complete.
>
> 3. Now detach the original ZFS fdisk partition leaving the one that
>   was the old NTFS partition
>        eg      zpool deatch rpool c0d0s0
>
> 4. Now boot from LiveCD and repartition (just fdisk alone should be enough)
> to delete the old ZFS partition and make the old NTFS one the size of the
> old NTFS one and the ZFS one together.  Making very sure it starts in
> exactly the same place the old NTFS one did.  Making sure it is tagged
> Solaris2 not NTFS.
>
> 5. Reboot the system and the ZFS pool should have expanded to the size of
> the original two partitions.
>
> If it hasn''t run ''zpool autoexpand=on rpool''
>
> Note that this will only work if the original NTFS partition that is before
> the ZFS partition in the fdisk layout is at least the same size as the
> current ZFS fdisk partition for rpool.  If it is smaller then this
won''t
> work and shouldn''t be attempted (though step 1 will fail).
>
> --
> Darren J Moffat
>
> _______________________________________________
> zfs-discuss mailing list
> zfs-discuss at opensolaris.org
> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
>
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I am afraid I won''t able to do that because the ZFS partition is around
50 GB and the NTFS one is 20 GB...

I am thinking in another possibility. Format the current NTFS partition to ZFS
and then I would be able to use this space like another disk, to store the user
home for example, or other stuff. Would it be possible?

Julio
-- 
This message posted from opensolaris.org

On Thu, Oct 15, 2009 at 05:31:42AM -0700, Julio P?rez
wrote:
> I am thinking in another possibility. Format the current NTFS
> partition to ZFS and then I would be able to use this space like
> another disk, to store the user home for example, or other
> stuff. Would it be possible?
Not easily.  Solaris x86 will only access the contents of one
"Solaris"
partition at a time.  Maybe you could format the other partition FAT32
and run ZFS on a file in there, but I can''t imagine the peformance
would
be good doing that.

-- 
Darren

Hi!

I tried this guide as my setup was similar. I had a Linux installation 
(extended partitions) followed by a OpenSolaris (snv_132)
installation.
> 1. Add the current NFS partition as a mirror of the existing ZFS one:
> 	eg	zpool attach rpool c0d0s0 c0d0p1	
>    
This worked,
> 1.1 Add a boot block with installgrub to the old NTFS side of the mirror
>    
I couldn''t do this, because installgrub doesn''t want to do
anything to a
partition or slice that is numbered differently than 0
> 2. Wait until ''zpool status'' tells you that the resilver
is complete.
>
> 3. Now detach the original ZFS fdisk partition leaving the one that
>      was the old NTFS partition
>    	eg	zpool deatch rpool c0d0s0
>    
worked, too. now I have:

     NAME        STATE     READ WRITE CKSUM
     rpool       ONLINE       0     0     0
       c4t0d0p2  ONLINE       0     0     0
> 4. Now boot from LiveCD and repartition (just fdisk alone should be
> enough) to delete the old ZFS partition and make the old NTFS one the
> size of the old NTFS one and the ZFS one together.  Making very sure it
> starts in exactly the same place the old NTFS one did.  Making sure it
> is tagged Solaris2 not NTFS.
>    
this wasn''t a problem either...
> 5. Reboot the system and the ZFS pool should have expanded to the size
> of the original two partitions.
>    
rebooting the system didn''t work - as expected - because of the missing
grub. Interestingly I could boot from the OpenSolaris live/install cd, 
selecting "boot from hd", finding myself in the boot menu of my hard 
disk. After modifying the findroot command I could even boot
snv_132
> If it hasn''t run ''zpool autoexpand=on rpool''
>    
That was the real fun part. Worked instantly...

Now I have two problems: getting grub to work without CD and getting 
rpool back to a slice instead of a partition.

I didn''t print out my original disk label and have now this label:

Current partition table (original):
Total disk cylinders available: 32866 + 2 (reserved cylinders)

Part      Tag    Flag     Cylinders         Size            Blocks
   0       root    wm       1 - 32865      251.76GB    (32865/0/0) 527976225
   1 unassigned    wm       0                0         (0/0/0)             0
   2     backup    wu       0 - 32865      251.77GB    (32866/0/0) 527992290
   3 unassigned    wm       0                0         (0/0/0)             0
   4 unassigned    wm       0                0         (0/0/0)             0
   5 unassigned    wm       0                0         (0/0/0)             0
   6 unassigned    wm       0                0         (0/0/0)             0
   7 unassigned    wm       0                0         (0/0/0)             0
   8       boot    wu       0 -     0        7.84MB    (1/0/0)         16065
   9 unassigned    wm       0                0         (0/0/0)             0

0 was unassigned and these values are guessed by me after reading a 
couple of web pages.

"installgrub /boot/grub/stage1 /boot/grub/stage2 /dev/rdsk/c4t0d0s0" 
wasn''t the solution to all my problems. Before doing this I had a black
screen, now I have "GRUB" in the upper left corner and nothing else...

I can boot via CD and "boot from harddisk" tough...
I had to modify findroot in /rpool/boot/grub/menu.lst from "findroot 
(pool_rpool,3,a)" to "findroot (pool_rpool,1)" to let grub find
my
system. Is it important to have a slice mentioned there?

Please include myself in reply as I''m not subscribed...
Bye...Frank

Frank,

I can''t comment on everything happening here, but please review the ZFS
root partition information in this section:

http://www.solarisinternals.com/wiki/index.php/ZFS_Troubleshooting_Guide

Replacing/Relabeling the Root Pool Disk

The p0 partition identifies the larger Solaris partition, which contains
slice 0-8. Slice 0 is then used for your ZFS root pool. Using a p0
device for your root pool was never intended and unexpected behavior
could result. I think we have a CR to prevent this configuration in
the future.

Yes, the findroot entry needs the slice indicator, which is "a" for
slice 0:

findroot (pool_rpool,1,a)

Then make sure the BIOS points to the right boot disk.

Thanks,

Cindy

On 02/18/10 12:40, Frank Thieme wrote:
> Hi!
> 
> I tried this guide as my setup was similar. I had a Linux installation 
> (extended partitions) followed by a OpenSolaris (snv_132) installation.
>> 1. Add the current NFS partition as a mirror of the existing ZFS one:
>>     eg    zpool attach rpool c0d0s0 c0d0p1   
>>    
> This worked,
>> 1.1 Add a boot block with installgrub to the old NTFS side of the
mirror
>>    
> I couldn''t do this, because installgrub doesn''t want to
do anything to a
> partition or slice that is numbered differently than 0
>> 2. Wait until ''zpool status'' tells you that the
resilver is complete.
>>
>> 3. Now detach the original ZFS fdisk partition leaving the one that
>>      was the old NTFS partition
>>        eg    zpool deatch rpool c0d0s0
>>    
> worked, too. now I have:
> 
>     NAME        STATE     READ WRITE CKSUM
>     rpool       ONLINE       0     0     0
>       c4t0d0p2  ONLINE       0     0     0
> 
>> 4. Now boot from LiveCD and repartition (just fdisk alone should be
>> enough) to delete the old ZFS partition and make the old NTFS one the
>> size of the old NTFS one and the ZFS one together.  Making very sure it
>> starts in exactly the same place the old NTFS one did.  Making sure it
>> is tagged Solaris2 not NTFS.
>>    
> this wasn''t a problem either...
>> 5. Reboot the system and the ZFS pool should have expanded to the size
>> of the original two partitions.
>>    
> rebooting the system didn''t work - as expected - because of the
missing
> grub. Interestingly I could boot from the OpenSolaris live/install cd, 
> selecting "boot from hd", finding myself in the boot menu of my
hard
> disk. After modifying the findroot command I could even boot snv_132
>> If it hasn''t run ''zpool autoexpand=on rpool''
>>    
> That was the real fun part. Worked instantly...
> 
> Now I have two problems: getting grub to work without CD and getting 
> rpool back to a slice instead of a partition.
> 
> I didn''t print out my original disk label and have now this label:
> 
> Current partition table (original):
> Total disk cylinders available: 32866 + 2 (reserved cylinders)
> 
> Part      Tag    Flag     Cylinders         Size            Blocks
>   0       root    wm       1 - 32865      251.76GB    (32865/0/0) 527976225
>   1 unassigned    wm       0                0         (0/0/0)             0
>   2     backup    wu       0 - 32865      251.77GB    (32866/0/0) 527992290
>   3 unassigned    wm       0                0         (0/0/0)             0
>   4 unassigned    wm       0                0         (0/0/0)             0
>   5 unassigned    wm       0                0         (0/0/0)             0
>   6 unassigned    wm       0                0         (0/0/0)             0
>   7 unassigned    wm       0                0         (0/0/0)             0
>   8       boot    wu       0 -     0        7.84MB    (1/0/0)         16065
>   9 unassigned    wm       0                0         (0/0/0)             0
> 
> 0 was unassigned and these values are guessed by me after reading a 
> couple of web pages.
> 
> "installgrub /boot/grub/stage1 /boot/grub/stage2
/dev/rdsk/c4t0d0s0"
> wasn''t the solution to all my problems. Before doing this I had a
black
> screen, now I have "GRUB" in the upper left corner and nothing
else...
> 
> I can boot via CD and "boot from harddisk" tough...
> I had to modify findroot in /rpool/boot/grub/menu.lst from "findroot 
> (pool_rpool,3,a)" to "findroot (pool_rpool,1)" to let grub
find my
> system. Is it important to have a slice mentioned there?
> 
> Please include myself in reply as I''m not subscribed...
> Bye...Frank
> _______________________________________________
> zfs-discuss mailing list
> zfs-discuss at opensolaris.org
> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

On Thu, Feb 18, 2010 at 21:57, Cindy Swearingen
<Cindy.Swearingen at sun.com> wrote:
> Yes, the findroot entry needs the slice indicator, which is "a"
for
> slice 0:
>
> findroot (pool_rpool,1,a)
"help findroot" in grub command line says it is optional. And as I
said it works when I leave the ",a" out, but not when I put it there.

I''ll take a look at the guide...

Bye...Frank