zfs discuss - Jul 2007 - zfs "no dataset available"

Hi, I just built a kernel from source yesterday and try to run the new kernel
and now it''s giving me "no dataset available" error.  My
non-root user home directory is mounted on a ZFS filesystem and now I
can''t get to it.  zpool status shows that my pool needs to be upgraded
so I did, but after the upgrade, I still get "no dataset available". 
I was running Sol Express B62 before and I got the source from mercurial
yesterday.  The B62 was live-upgraded partition and it''s the 2nd (and
only active) slice.

Please HELP!
 
 
This message posted from opensolaris.org

zpool import pool (my pool is named ''pool'') returns

cannot import ''pool'': no such pool available

zpool list returns that pool named ''pool'' is available with
"Unknown" Health.

All I did was "zpool upgrade" because that''s what it asked me
to do...nothing more.  Anyone have any idea?
 
 
This message posted from opensolaris.org

On Fri, 13 Jul 2007, Kwang-Hyun Baek wrote:
> zpool import pool (my pool is named ''pool'') returns
>
> cannot import ''pool'': no such pool available
What does ''zpool import'' by itself show you?  It should give
you a list of
available pools to import.



Regards,
markm

no pools available to import

yet when I do 
zpool list

it shows my pool with health UNKNOWN
 
 
This message posted from opensolaris.org

On Fri, 13 Jul 2007, Kwang-Hyun Baek wrote:
> zpool list
>
> it shows my pool with health UNKNOWN
That means it''s already imported.  What''s the output of
''zpool status''?


Regards,
markm

pool: pool
 state: UNKNOWN
 scrub: none requested
config:

        NAME        STATE     READ WRITE CKSUM
        pool        UNKNOWN      0     0     0
          c0d0s5    UNKNOWN      0     0     0
          c0d0s6    UNKNOWN      0     0     0
          c0d0s4    UNKNOWN      0     0     0
          c0d0s3    UNKNOWN      0     0     0

errors: No known data errors
 
 
This message posted from opensolaris.org

On Fri, 13 Jul 2007, Kwang-Hyun Baek wrote:
>         NAME        STATE     READ WRITE CKSUM
>         pool        UNKNOWN      0     0     0
>           c0d0s5    UNKNOWN      0     0     0
>           c0d0s6    UNKNOWN      0     0     0
>           c0d0s4    UNKNOWN      0     0     0
>           c0d0s3    UNKNOWN      0     0     0
OK, so you''ve striped across slices of a single disk.  But the disk
appears unavailable.  Does ''format'' see it?  Are there any
error messages
in the console or the system log?  Does ''svcs'' show anything
offline?

The reason you''re getting "no datasets available" is that the
disk cannot
be accessed.  Once you figure out how to make the disk accessible again,
your pool will come back, and your datasets will be restored.


Regards,
markm

AVAILABLE DISK SELECTIONS:
       0. c0d0 <DEFAULT cyl 6334 alt 2 hd 255 sec 63>
          /pci at 0,0/pci-ide at 1f,2/ide at 0/cmdk at 0,0
Specify disk (enter its number): 0
selecting c0d0
Controller working list found
[disk formatted, defect list found]
Warning: Current Disk has mounted partitions.
/dev/dsk/c0d0s0 is in use for live upgrade /. Please see ludelete(1M).
/dev/dsk/c0d0s1 is currently used by swap. Please see swap(1M).
/dev/dsk/c0d0s3 is part of active ZFS pool pool. Please see zpool(1M).
/dev/dsk/c0d0s4 is part of active ZFS pool pool. Please see zpool(1M).
/dev/dsk/c0d0s5 is part of active ZFS pool pool. Please see zpool(1M).
/dev/dsk/c0d0s6 is part of active ZFS pool pool. Please see zpool(1M).
/dev/dsk/c0d0s7 is currently mounted on /. Please see umount(1M).


The disk is available...I''m using it.
 
 
This message posted from opensolaris.org

Kwang-Hyun Baek stated:
< AVAILABLE DISK SELECTIONS:
<        0. c0d0 <DEFAULT cyl 6334 alt 2 hd 255 sec 63>
<           /pci at 0,0/pci-ide at 1f,2/ide at 0/cmdk at 0,0
< Specify disk (enter its number): 0
< selecting c0d0
< Controller working list found
< [disk formatted, defect list found]
< Warning: Current Disk has mounted partitions.
< /dev/dsk/c0d0s0 is in use for live upgrade /. Please see ludelete(1M).
< /dev/dsk/c0d0s1 is currently used by swap. Please see swap(1M).
< /dev/dsk/c0d0s3 is part of active ZFS pool pool. Please see zpool(1M).
< /dev/dsk/c0d0s4 is part of active ZFS pool pool. Please see zpool(1M).
< /dev/dsk/c0d0s5 is part of active ZFS pool pool. Please see zpool(1M).
< /dev/dsk/c0d0s6 is part of active ZFS pool pool. Please see zpool(1M).
< /dev/dsk/c0d0s7 is currently mounted on /. Please see umount(1M).
< 
< 
< The disk is available...I''m using it.

 what does:

    prtvtoc /dev/rdsk/c0d0s0

 say ?   Just being sure you don''t have any over lapping partitions.

 and possibly (Mark would probably ask this next :): export and import the
 pool again..

  zpool export <pool>
  zpool import <pool>


Regards,

<  
<  
< This message posted from opensolaris.org
< _______________________________________________
< zfs-discuss mailing list
< zfs-discuss at opensolaris.org
< http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

-- 
Sean.
.

root at solaris-devx:/# prtvtoc /dev/rdsk/c0d0s0 
* /dev/rdsk/c0d0s0 partition map
*
* Dimensions:
*     512 bytes/sector
*      63 sectors/track
*     255 tracks/cylinder
*   16065 sectors/cylinder
*    6336 cylinders
*    6334 accessible cylinders
*
* Flags:
*   1: unmountable
*  10: read-only
*
* Unallocated space:
*       First     Sector    Last
*       Sector     Count    Sector 
*     4257225     16065   4273289
*
*                          First     Sector    Last
* Partition  Tag  Flags    Sector     Count    Sector  Mount Directory
       0      0    00   43471890  24370605  67842494
       1      3    01      48195   4209030   4257224
       2      5    00          0 101755710 101755709
       3      0    00    4273290   8434125  12707414
       4      0    00   22956885  10249470  33206354
       5      0    00   33206355  10265535  43471889
       6      0    00   12707415  10249470  22956884
       7      2    00   67842495  33913215 101755709   /
       8      1    01          0     16065     16064
       9      9    01      16065     32130     48194


I will try that.  (I need to reboot)
 
 
This message posted from opensolaris.org

Okay.  Now it says the pool cannot be imported.  :*(  Is there anything I can to
fix it?

# zpool import
  pool: pool
    id: 3508905099046791975
 state: UNKNOWN
action: The pool cannot be imported due to damaged devices or data.
config:

        pool        UNKNOWN
          c0d0s5    UNKNOWN
          c0d0s6    UNKNOWN
          c0d0s4    UNKNOWN
          c0d0s3    UNKNOWN
 
 
This message posted from opensolaris.org

Is there any way to fix this?  I actually tried to destroy the pool and try to
create a new one, but it doesn''t let me.  Whenever I try, I get the
following error:

root at solaris-devx:/var/crash# zpool create -f pool c0d0s5
internal error: No such process
Abort (core dumped)

After that zpool list shows pool... and if I try to remove it, I get the similar
core dump...

root at solaris-devx:/var/crash# zpool list
NAME                    SIZE    USED   AVAIL    CAP  HEALTH     ALTROOT
pool                   4.88G   74.5K   4.87G     0%  UNKNOWN    -
root at solaris-devx:/var/crash# zpool destroy pool
internal error: No such process
Abort (core dumped)

----PLEASE HELP!!!!
 
 
This message posted from opensolaris.org

On Mon, 16 Jul 2007, Kwang-Hyun Baek wrote:
> Is there any way to fix this?  I actually tried to destroy the pool and
> try to create a new one, but it doesn''t let me.  Whenever I try, I
get
> the following error:
>
> root at solaris-devx:/var/crash# zpool create -f pool c0d0s5
> internal error: No such process
> Abort (core dumped)
What does ''uname -a'' show?


Regards,
markm

# uname -a
SunOS solaris-devx 5.11 opensol-20070713 i86pc i386 i86pc

======================================================What''s more
interesting is that ZFS version shows that it''s 8....does it even
exist?

root at solaris-devx:/# zpool upgrade
This system is currently running ZFS version 6.

The following pools are formatted using a newer software version and
cannot be accessed on the current system.

VER  POOL
---  ------------
 8   pool

Use ''zpool upgrade -v'' for a list of available versions and
their associated
features.
 
 
This message posted from opensolaris.org

On Tue, 17 Jul 2007, Kwang-Hyun Baek wrote:
> # uname -a
> SunOS solaris-devx 5.11 opensol-20070713 i86pc i386 i86pc
>
> ======================================================
> What''s more interesting is that ZFS version shows that
it''s 8....does it
> even exist?
Yes, 8 was created to support delegated administration, and is in
opensolaris.  The full list is available in the source:

http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/zpool/zpool_main.c#3365
> root at solaris-devx:/# zpool upgrade
> This system is currently running ZFS version 6.
>
> The following pools are formatted using a newer software version and
> cannot be accessed on the current system.
So what happened was that you created version 8 pool and then did
something (reinstalled?  fell back to a previous LU root?) to get you back
to version 6 software.  Once you upgrade to version 8, you will regain
full access to your pool.


Regards,
markm