[LUNA] Upgrading to CentOS 6.n

William A. Mahaffey III wam at hiwaay.net
Wed Nov 11 14:18:02 CST 2015


Yes, 1 time, 1 machine, but 6 HDD's, thus much opportunity for 
fat-fingering something. W/ kickstart I can edit the file at my leisure, 
then kickoff the install confident of no critical typos. Thanks for the 
pointer on '%pre', I will followup on that.


On 11/11/15 13:50, Paul F. Pearson wrote:
> I recall reading that one way to get partitioning right in the kickstart is to have the "%pre" stanza call parted to calculate the start/stop of each partition; parted can auto-align properly.
>
> If this is a "one-time, one machine" thing, you could do the partitioning manually before hand and then tell kickstart to use the existing partitions.
>
> ----- Original Message -----
>>
>> I have an older server running FC14-64-bit which I am planning to
>> upgrade to CentOS6.n. Due to excruciatingly poor decision making on my
>> part in the original install, I will also be re-partitioning in the
>> process :-). I have a kickstart file setup & ostensibly ready to go. For
>> now it sets up 4 partitions per drive, boot, swap, root & home. Boot,
>> root & home will be LVM'ed into larger 'partitions' & then the install
>> will proceed. I am planning on a RAID1 LVM for /boot, RAID10 for root, &
>> RAID0 for /home. I am also considering RAID5 for /home. I have another
>> machine running NetBSD 6.1.5 with a similar disk-partition (actually
>> slice) arrangement, with a RAID5 /home, 4 data slices, 1 parity, 1
>> hot-swap/spare. Despite my best efforts, I have misaligned
>> disk-blocks/RAID elements/FS blocks & resulting horribly slow I/O :-/. I
>> want to avoid that w/ this install :-). Will the LVM RAID5 kickstart
>> setup 'do the right thing' WRT disk-block/LV alignment by itself, or are
>> there any gotchas (hopefully w/ work-arounds :-) ) for a RAID 5 setup ?
>> I am comfortable w/ a RAID0 here, everything on that 'partition' will be
>> backed up elsewhere across my LAN, but I wouldn't mind the extra
>> robustness WRT disk failure of a RAID5 vs. RAID0, I just don't want the
>> performance hit of a fubar'ed install :-/ .... TIA for *ANY*
>> advice/clues/URL's/etc. on this matter, & have a good one ....
>>
>>
>> --
>>
>> 	William A. Mahaffey III
>>
>>    ----------------------------------------------------------------------
>>
>> 	"The M1 Garand is without doubt the finest implement of war
>> 	 ever devised by man."
>>                              -- Gen. George S. Patton Jr.
>>
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>>
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-- 

	William A. Mahaffey III

  ----------------------------------------------------------------------

	"The M1 Garand is without doubt the finest implement of war
	 ever devised by man."
                            -- Gen. George S. Patton Jr.



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