[CentOS] Re: Anaconda doesn't support raid10
Ruslan Sivak
rsivak at istandfor.com
Thu May 10 05:39:23 UTC 2007
Feizhou wrote:
> Ruslan Sivak wrote:
>> Feizhou wrote:
>>>
>>>>>> What advantages, if any, would lvm have over this set up?
>>>>>
>>>>> How about flexible filesystem resizing? If you did it the way I
>>>>> suggested: 512MB /boot, 512MB /tmp, you have like 960GB of space
>>>>> to carve anyway you like. You also get lvm snapshots which you
>>>>> won't get with raid seeing that this is supposed to be a backup
>>>>> server too.
>>>>
>>>> Yea, I think for these reasons I will use lvm. I have set up a
>>>> system as follows:
>>>>
>>>> /boot raid 1 200mb 4 drives no spares (I guess this makes 4 copies
>>>> of the data?)
>>>
>>> You have four disks which will be paired into two pairs. If one pair
>>> goes, everything goes. Might as well use one pair for /boot and the
>>> other for /tmp.
>>>
>> I'm not quite sure I understand? This is raid1, not raid10. While
>> I'm not sure exactly how raid1 works with 4 drives, I'm assuming
>> everything is a copy of a copy of a copy...
>> So how would 2 drives going out kill the whole raid1 device?
>
> NOT everything is raid1 now is it? Your data/system is on raid10 RIGHT?
> _______________________________________________
>
Well apparently not. I decided to go with 2 raid1's with LVM striped on
top of it. The previous comment was specifically about /boot on raid1.
I have tested it, and it worked flawlessly even with 2 drives taken
out. All my arrays held up. Of course if I took out one of the wrong
drives, I would've lost my data, but I think the book partition would've
been ok.
Russ
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