ZFS - A Stripe of Mirrors

[ecpeachy]

Hello,

I was wondering if there is a GUI way to create a two, two-way mirrors AKA RAID 10 during the Installation of PC-BSD

Something like this command

# zpool create tank mirror c1d0 c2d0 mirror c3d0 c4d0

Thanks

[kmoore134]

That particular feature has not been implemented yet, but may be something to explore adding
down the road

[ecpeachy]

Thanks for your reply, I appreciate your efforts

[ProBSD.com]

Hi Kris,

Any closer on this yet?

Rick

[kmoore134]

This will have to be something for 9.1, since the interface is frozen
for 9.0.

[qtsidekick]

I would love to do see this working too.

Is there anyway I can transfer the whole PC-BSD DVD to the computer like step 10 in the link below?
http://www.aisecure.net/2011/11/28/root-zfs-freebsd9/

Sorry I am new to PC-BSD and I have not had time to read the post guideline. You probably do not allow external links.

# sh
# cd /usr/freebsd-dist
# export DESTDIR=/mnt
# for file in base.txz lib32.txz kernel.txz doc.txz ports.txz src.txz; do (cat $file | tar --unlink -xpJf - -C ${DESTDIR:-/}); done

I can install FreeBSD but I am also new to FreeBSD so the configurations and all are the new learning materials. It takes time to get going. Like I have to config Xorg, sound, keyboard, mouse, VirtualBox, hosts/names, Xmonad, etc. I want something pre-configured like PC-BSD so I just add some more stuffs to it.

Any hint how-to put PC-BSD on the computer after step 9 in the link would be much appreciated.

[Nukama]

I'm not sure, if this works, as only content of PCBSD.tbz and PCBSD.ufs.uzip are copied to DESTDIR:

#!/bin/sh
setenv $DESTDIR=/mnt
cd $DESTDIR
tar -xvjf /root/PCBSD/PCBSD.tbz
kldload geom_uzip
mdconfig -f /root/PCBSD/PCBSD.ufs.uzip -o readonly -u 100
mkdir -p /tmp/mount
mount -r /dev/md100.uzip /tmp/mnt
rsync -avP /tmp/mnt $DESTDIR

fbsd-release.tbz and xtra-data.tbz aren't covered with this script, so beware...not at all tested.
rsync should be found somewhere inside /tmp/mnt - it's {Free|PC}BSD - so you might figure it out.

Would be nice if specification of filesystem-layout could be done via cli, and DESTIR could be set via GUI in expert mode.
No need to implement all permutations of zfs installations.

[kmoore134]

In this case you only need PCBSD.tbz, and then you can pkg_add the
various bits you want in our packages/ directory.

For 9.1, I plan on adding a feature which lets you customize the disk
layout via the CLI, and then point the installer at a mount-point and
it'll handle the rest of the install

[ProBSD.com]

Hi Kris,

Using the above mentioned script method (http://www.aisecure.net/2011/05/01/r...reebsd-current) provided by Olaf, and then adding "mount /dev/da2s1a /mnt/PCBSD; tar -xvjf /mnt/PCBSD/PCBSD.tbz" right after;

cd /usr/freebsd-dist
export DESTDIR=/mnt
for file in base.txz lib32.txz kernel.txz doc.txz ports.txz src.txz;
do (cat $file | tar --unlink -xpJf - -C ${DESTDIR:-/}); done

I run the script and I keep getting an error stating it can not unlink existing link with /bin/rpc, do you have any ideas? I realize you are swamped trying to get version 9 ready for launch but many of us really want to get your wonderful PC-BSD 9.0 installed to a RAID10 ZFS setup. Any and all help is greatly appreciated.

Thank,
ProBSD

[qtsidekick]

Hi all,

I finally figured out the easiest way to get over this (A Stripe of Mirror or Raidz10). This is root on ZFS as you know.

So I install PC-BSD as a basic ZFS. No mirror or any other drive selected.
The log on the system and issue this command zpool status

 pool: tank0
 state: ONLINE
 scan: none requested
config:

	NAME        STATE     READ WRITE CKSUM
	tank0       ONLINE       0     0     0
	  ada0p2    ONLINE       0     0     0

I forgot to mention, I have total 4 hard drives. Also, they are pre-configured. All of them has the same layout; 64k for boot partition and the rest for ZFS.
As you can see only one drive is currently attach/active in my zpool (tank0). So I do gpart show command to make sure I have everything I thought.

=>        34  1953525101  ada0  GPT  (931G)
          34         128     1  freebsd-boot  (64k)
         162        1854        - free -  (927k)
        2016  1953513472     2  freebsd-zfs  (931G)
  1953515488        9647        - free -  (4.7M)

=>        34  1953525101  ada1  GPT  (931G)
          34         128     1  freebsd-boot  (64k)
         162  1953524973     2  freebsd-zfs  (931G)

=>        34  1953525101  ada2  GPT  (931G)
          34         128     1  freebsd-boot  (64k)
         162  1953524973     2  freebsd-zfs  (931G)

=>        34  1953525101  ada3  GPT  (931G)
          34         128     1  freebsd-boot  (64k)
         162  1953524973     2  freebsd-zfs  (931G)

Then I added bootcode to every boot partition of the hard drive.

gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ada1
gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ada2
gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ada3

Next thing I attach the one more drive to the pool by issuing this commad:

zpool attach -f tank0 /dev/ada0p2 /dev/ada1p2

(Credit go to Nukama - http://forums.pcbsd.org/newreply.php...treply&t=13977)
Then I want to see if it is working, using the command zpool status

   pool: tank0
 state: ONLINE
status: One or more devices is currently being resilvered.  The pool will
	continue to function, possibly in a degraded state.
action: Wait for the resilver to complete.
 scan: resilver in progress since Sun Jan 22 21:21:54 2012
    97.0M scanned out of 6.13G at 10.8M/s, 0h9m to go
    93.0M resilvered, 1.55% done
config:

	NAME        STATE     READ WRITE CKSUM
	tank0       ONLINE       0     0     0
	  mirror-0  ONLINE       0     0     0
	    ada0p2  ONLINE       0     0     0
	    ada1p2  ONLINE       0     0     0  (resilvering)

It is working! Resilvering means mirror(ing). Now that I have a mirror in my zpool. I will just add another mirror to make it a-stripe-of-mirror or RAIDZ10; command

zpool add -f tank0 mirror /dev/ada2p2 /dev/ada3p2

To verify zpool status

  pool: tank0
 state: ONLINE
 scan: resilvered 6.13G in 0h7m with 0 errors on Sun Jan 22 21:28:56 2012
config:

	NAME        STATE     READ WRITE CKSUM
	tank0       ONLINE       0     0     0
	  mirror-0  ONLINE       0     0     0
	    ada0p2  ONLINE       0     0     0
	    ada1p2  ONLINE       0     0     0
	  mirror-1  ONLINE       0     0     0
	    ada2p2  ONLINE       0     0     0
	    ada3p2  ONLINE       0     0     0

errors: No known data errors

You might ask, what the hell? There is no swap partition at all? Easy fix.
Command:

zfs create -V 16G tank0/swap
zfs set org.freebsd:swap=on tank0/swap
zfs set checksum=off tank0/swap

These steps are very important especially the 3rd line. (Yes, credit go to gkontos. You can google Root on ZFS. Swap partition always doubled your physical RAM amount.
I hope this help whoever is struggling on this issue like me.
I love FreeBSD and PC-BSD. I hope someday it will shine more than it is right now. Thanks to all the people contribute to FreeBSD, PC-BSD and this forum. I can now have my PC-BSD & VirtualBox running Windows 7 and start learning some coding programs. If you have any question, just ask. I will see if I can answer. As I stated in earlier posted, I am no expert. I am just learning to get my system working (more like self-study)