[CentOS] Re: Anaconda doesn't support raid10

Thu May 10 05:39:23 UTC 2007
Ruslan Sivak <rsivak at istandfor.com>

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.