[CentOS] partitions vs. LVs [was: Re: How to upgrade from 5.8 to 6.2]
ken
gebser at mousecar.com
Sun Jun 24 16:24:56 UTC 2012
On 06/24/2012 12:04 PM Steve Clark wrote:
> On 06/24/2012 11:21 AM, ken wrote:
>> On 06/24/2012 09:41 AM Benjamin Franz wrote:
>>> On 06/24/2012 12:05 AM, Gene Heskett wrote:
>>>> And what do you do when this LVM goes corrupt in about a month? I've
>>>> had it self destruct on me twice. I hate it when that happens.
>>> I would look for some other issue like bad hardware. Over the last
>>> several years I've routinely used LVM for pretty much everything and
>>> have never had it go corrupt on me except when there was a hardware
>>> failure involved. My standard buildouts use LVM over RAID.
>> Gene,
>>
>> Yeah, the problem is more than likely in your hardware. I've used it on
>> hundreds of machines and since 1999 and never had a problem traceable to
>> LVM. On the other hand, I've seen a lot of disks go bad.
>>
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> What I don't like about LVM. at least on a personal system, is it
> obfuscates where things are if you have multiple
> underlying drives. You can't just do a df -h and see what the physical
> layout really is. I guess there are some
> pvdisplay and lvdisplay commands that can show this - but I always have
> to look them up and when things go
> kaflooey and your system isn't working then what - bring out the rescue
> cd and hope you can figure it out.
>
>
> --
> Stephen Clark
> *NetWolves*
> Director of Technology
> Phone: 813-579-3200
> Fax: 813-882-0209
> Email: steve.clark at netwolves.com
> http://www.netwolves.com
It helps during their creation, rather than just accepting the defaults,
to give the LVs meaningful names. But even if you don't:
# df -H
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-lvroot
31G 12G 18G 39% /
/dev/mapper/VolGroup00-lvtmp
195M 55M 131M 30% /tmp
/dev/mapper/VolGroup00-lvvar
21G 1.2G 19G 6% /var
/dev/mapper/VolGroup00-lvhome
185G 40G 136G 23% /home
/dev/hda3 518M 46M 446M 10% /boot
Where's the difficulty?
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