[indiana-discuss] How to boot in failsafe mode?

[Dave Miner]

ludo wrote:
> Sanjay Nadkarni wrote:
>> David.Comay at Sun.COM wrote:
>>>> So I need to either boot in failsafe mode,
>> You could boot it into single user by adding a -s  in grub menu i.e.
>> kernel$ /platform/i86pc/kernel/$ISADIR/unix  -s
> Thanks, this works fine.
> I am not yet comfortable with the ZFS commands, but it is for sure not 
> obvious/user friendly anymore to mount a ZFS hard drive:-(
> It seems that you need to know some internal strings like zpl_slim or 
> rpool ?
> Are they store on the disk itself?

Yes, you do and they are, though an alternate means is merely:

zpool import -f rpool
mkdir /tmp/a
mount -F zfs rpool/ROOT/preview2 /tmp/a

Which should look slightly more familiar, I suppose.

> Could we add these command somewhere on the liveCD itself?

Recovery/failsafe booting is something we need to work on.  It's not 
clear that forcibly importing a ZFS pool is necessarily something we 
want to do automatically, but providing some guidance in doing it seems 
valuable.

Dave

> 
> Ludo
>> -Sanjay
>>
>>>>  or booting using the liveCD I
>>>> need to mount the Ultra 40 disk...
>>>> But from the live CD, I do not find a way to mount the hardrive... with
>>>> the usual
>>>> mount /dev/dsk/c4t0d0s0  /tmp/mnt
>>>>
>>>> How do I mount this drive from the LiveCD boot?
>>>>     
>>> >From the Live CD, you should be able to access the already installed
>>> ZFS pool by typing
>>>
>>>      $ pfexec zpool import -f zpl_slim
>>>      $ mkdir /tmp/a
>>>      $ pfexec zfs set mountpoint=/tmp/a zpl_slim/root
>>>
>>>      (for Preview 1)
>>>
>>> or
>>>
>>>      $ pfexec zpool import -f rpool
>>>      $ mkdir /tmp/a
>>>      $ pfexec zfs set mountpoint=/tmp/a rpool/ROOT/preview2
>>>
>>>      (for the test image)
>>>
>>> dsc
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> 
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