upgrading 9.3 / ZFS v28

[David Newman]

On 11/17/14, 10:47 PM, andrew clarke wrote:
> On Mon 2014-11-17 16:24:52 UTC-0800, David Newman (dnewman at networktest.com) wrote:
> 
>> This command will upgrade the zpool, even when mounted:
>>
>> zpool upgrade -a
>>
>> This command will take the system offline, as I learned the hard way:
>>
>> zfs upgrade
>>
>> The right way to do this:
>>
>> 1. Boot into a LiveCD. I used the FreeBSD 10.1 DVD.
>>
>> 2. For each boot partition, use this command:
>>
>> # gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ada0
>>
>> This assumes that (a) the freebsd-boot partition is first on the disk
>> and ada0 is the disk. Use "gpart show" to verify this.
>>
>> This system has four disks, each with a freebsd-boot partition, so I
>> went on like this:
>>
>> # gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 2 ada1
>> # gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 3 ada2
>> # gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 4 ada3
>>
>> ...and I got an invalid index error on that last one, even though it's
>> set up the same as the others.
>>
>> The system seems to boot and run OK, but I'm not sure why that last
>> command failed.
> 
> In what way did "zfs upgrade" take the system offline? Kernel panic?

Yup.

> 
> You did not paste the output of "gpart show", but I suspect you may
> have got the gpart index parameter wrong on ada{1,2,3}.
> 
> On my two disk system, "gpart show" outputs:
> 
> =>        34  1953525101  ada0  GPT  (932G)
>           34         128     1  freebsd-boot  (64K)
>          162  1953524973     2  freebsd-zfs  (932G)
> 
> =>        34  1953525101  ada1  GPT  (932G)
>           34         128     1  freebsd-boot  (64K)
>          162  1953524973     2  freebsd-zfs  (932G)
> 
> Therefore the correct commands were:
> 
> gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ada0
> gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ada1

Sorry for not including the gpart output. It's pasted below.

You're correct about incorrect usage of index numbers. I should just be
using '-i 1' for all disks.

Previously I used bogus values '-i 2' and '-i 3'. Is it sufficient to
rerun the gpart bootcode with '-i 1' to correct this, or are other
remedial steps needed?

Thanks again for your help.

dn

=>        34  1953525101  ada0  GPT  (932G)
          34         128     1  freebsd-boot  (64K)
         162     8388608     2  freebsd-swap  (4.0G)
     8388770  1945136365     3  freebsd-zfs  (928G)

=>        34  1953525101  ada1  GPT  (932G)
          34         128     1  freebsd-boot  (64K)
         162     8388608     2  freebsd-swap  (4.0G)
     8388770  1945136365     3  freebsd-zfs  (928G)

=>        34  1953525101  ada2  GPT  (932G)
          34         128     1  freebsd-boot  (64K)
         162     8388608     2  freebsd-swap  (4.0G)
     8388770  1945136365     3  freebsd-zfs  (928G)

=>        34  1953525101  ada3  GPT  (932G)
          34         128     1  freebsd-boot  (64K)
         162     8388608     2  freebsd-swap  (4.0G)
     8388770  1945136365     3  freebsd-zfs  (928G)



> 
> Regards
> Andrew
>