[ale] Topic ideas for November meeting

Jim Kinney jim.kinney at gmail.com
Tue Nov 3 10:45:02 EST 2015


Hmm. I can add a chunk of RAID usage for small machine setups.
On Nov 3, 2015 8:36 AM, "Paul Cartwright" <pbcartwright at gmail.com> wrote:

> I have never used RAID at home, nor LVM.. still on ext4.. this is my
> laptop..
> Device     Boot     Start       End  Sectors  Size Id Type
> /dev/sda1  *           63  71682029 71681967 34.2G  7 HPFS/NTFS/exFAT
> /dev/sda2        71682048 100980735 29298688   14G 83 Linux
> /dev/sda3       100980736 105076735  4096000    2G 82 Linux swap / Solaris
> /dev/sda4       105078782 192425983 87347202 41.7G  5 Extended
> /dev/sda5       105078784 192425983 87347200 41.7G 83 Linux
>
>
> on my desktop I have dual disks, and I just rsynced "/" and /home to
> partitions on the other drive..
> maybe a nice talk on RAID/LVM...
>
>
> On 11/03/2015 08:17 AM, Lightner, Jeff wrote:
>
>> I totally disagree.   Partitioning is only "simple" in initial setup.
>>  When you want to add space to a partition that has stuff beyond it you
>> have to resize everything.
>>
>> With LVM:
>> a)  You can resize individual LVs without adjusting other LVs (assuming
>> you have free space).
>> b)  You can add new PVs to extend the size of the VG without having to
>> redo anything.
>>
>> With RAID levels beyond 0 you don't lose data due to one failed disk.
>>
>> Of course both RAID and LVM allow you to use partitions as members but
>> you can also do whole disks.
>>
>
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