Hi Reidod,

There was zfspool with two disks on the server. Both disks was 76G (or something like this). First of all, I've replaced one of them by another one with 150G disk and waited when it resilver. At second step I've replaced remained small disk with bigger new one.

As result I've got old zfs pool with totaly new disks. I've installed bootblock on both disks. Than I rebooted the serever and got what I described early.

There is zpool history output:

zpool offline zfsroot c0t0d0s2

zpool detach zfsroot c0t0d0s2

zpool attach zfsroot c0t1d0s2 c4t0d0s2

zpool offline zfsroot c0t1d0s2

zpool detach zfsroot c0t1d0s2

zpool attach zfsroot c4t0d0s2 c4t1d0s2

zpool set autoexpand=on zfsroot

c0tXd0 - old disks

c4tXd0 - new disks

But when I boot int failsafe mode (or from dvd in single mode) I see my new disks as c2tXd0 (may be it's significant)

Thank you.

Here are

format output

AVAILABLE DISK SELECTIONS:

       0. c0t1d0 <FUJITSU-MAP3735NC-3701 cyl 24345 alt 2 hd 8 sec 737>

          /pci@87,2000/scsi@1/sd@1,0

       1. c2t0d0 <COMPAQ-BD14689BB9-HPB1 cyl 65533 alt 2 hd 5 sec 875>

          /pci@8f,2000/scsi@1/sd@0,0

       2. c2t1d0 <COMPAQ-BD14689BB9-HPB1 cyl 65533 alt 2 hd 5 sec 875>

          /pci@8f,2000/scsi@1/sd@1,0

show-disks in OBP:

{0} ok show-disks

a) /pci@8d,4000/scsi@3,1/disk

b) /pci@8d,4000/scsi@3/disk

c) /pci@8f,2000/scsi@1,1/disk

d) /pci@8f,2000/scsi@1/disk

e) /pci@85,4000/scsi@3,1/disk

f) /pci@85,4000/scsi@3/disk

g) /pci@87,2000/scsi@1,1/disk

h) /pci@87,2000/scsi@1/disk

q) NO SELECTION

Enter Selection, q to quit:

 

boot-device  value is "disk1:c" but I switch off autoboot (for debug purposes) and boot server manualy with command "boot disk11..."

Here is devalias output:

{0} ok devalias

tape                     /pci@87,2000/scsi@1,1/tape@5,0

cdrom                    /pci@87,2000/scsi@1,1/disk@4,0:f

disk11                   /pci@8f,2000/scsi@1/disk@1,0

disk10                   /pci@8f,2000/scsi@1/disk@0,0

disk1                    /pci@87,2000/scsi@1/disk@1,0

disk0                    /pci@87,2000/scsi@1/disk@0,0

disk                     /pci@87,2000/scsi@1/disk@0,0

scsi                     /pci@87,2000/scsi@1

obp-net                  /pci@87,4000/network@1,1

net                      /pci@87,4000/network@1,1

ttyb                     /pci@87,4000/ebus@1/FJSV,se@14,400000:b

ttya                     /pci@87,4000/ebus@1/FJSV,se@14,400000:a

scf                      /pci@87,4000/ebus@1/FJSV,scfc@14,200000

no,nor from disk10 nor from disk11 - the same error

Reidod, I've fixed issie.

My unbootable pool occupied whole disks space on every disks (You can see s2 partitions (c4t0d0s2 etc))

I detached disk from pool, create one slice on it and attach it back but with slice - s0 (c4t0d0s0 etc), and did it for another disk. So now pool looks like this:

# zpool status

  pool: zfsroot

state: ONLINE

scan: resilvered 31.7G in 0h39m with 0 errors on Fri Jan 31 09:10:40 2014

config:

        NAME          STATE     READ WRITE CKSUM

        zfsroot       ONLINE       0     0     0

          mirror-0    ONLINE       0     0     0

            c4t1d0s0  ONLINE       0     0     0

            c4t0d0s0  ONLINE       0     0     0

And now I'm able boot the server.

Apparently OBP can boot OS from slices only. (Or I didn't find option for other variant)

Thank so much you for help!