hptrr disk labeling
Randy Bush
randy at psg.com
Sun Jun 3 04:19:41 UTC 2012
>> i have an hptrr controller with 12-16 2tb satas on it. a picture
>> before i started cleaning up some disk failures.
>>
>> NAME STATE READ WRITE CKSUM
>> tank ONLINE 0 0 0
>> mirror ONLINE 0 0 0
>> label/m00-d01 ONLINE 0 0 0
>> label/m00-d00 ONLINE 0 0 0
>> mirror ONLINE 0 0 0
>> label/m01-d00 ONLINE 0 0 0
>> label/m01-d01 ONLINE 0 0 0
>>
>> the reason i used glabels was because when the system boots or the
>> controller rescans, it assigns da0 to the first drive it finds alive on
>> the controller, da1 to the second, etc.
>>
>> this means that drive addition or removal changes the daX numbering.
>>
>> so the labels are so that zfs can find its ass when assembling the
>> array.
>
> Can you use GPT for partitioning? Put a single partition on each disk and
> set the GPT label (which is not the glabel). See gpart's add and modify
> subcommands.
>
> NAME STATE READ WRITE CKSUM
> gs1p ONLINE 0 0 0
> mirror ONLINE 0 0 0
> gpt/CONST_2-9XE02KPK-zfs ONLINE 0 0 0
> gpt/SAVVIO-6XQ10F80-zfs ONLINE 0 0 0
> gpt/SAVVIO-6XQ103C7-zfs ONLINE 0 0 0
ok. sure i could do that. but what's the win?
randy
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