perfSONAR User Q&A and Other Discussion

[David Mitchell <>]

If we choose 'replace existing Linux system' rather than 'Use entire drive' 
will CentOS leave the partitions intact? I was hoping to do ps.ncar.xsede.org 
this week so I'm definitely interested in the preferred route.

-David

On Aug 19, 2013, at 11:31 AM, Kathy Benninger 
<>
 wrote:

> Hi Aaron,
> 
> Available storage devices are:
>  one ~220GB SSD
>  two 2TB disks
> I told RedHat to use all the storage for perfSONAR.
> 
> RedHat configured:
>  ~64GB (about 1/3 of the SSD) for /, /dev/shm, and /boot
>  ~4TB for /home
> resulting in database and log storage all configured onto a portion of the 
> (relatively) small SSD.  The software RAID is gone, with all 4TB allocated 
> to /home.
> 
> In detail, I ended up with:
> 
> Filesystem           1K-blocks      Used Available Use% Mounted on
> /dev/mapper/vg_dhcp145c-lv_root
>                      51606140   2098480  46886220   5% /
> tmpfs                 12298336         0  12298336   0% /dev/shm
> /dev/sda1               495844     37930    432314   9% /boot
> /dev/mapper/vg_dhcp145c-lv_home
>                     4012173384    199824 3808166840   1% /home
> 
> When what I really want is what I had before:
> 
> Filesystem           1K-blocks      Used Available Use% Mounted on
> /dev/sda2            119031092   1906408 110980628   2% /
> /dev/sda6              4956284    141252   4559200   4% /tmp
> /dev/md0             1892332848  61523772 1733133480   4% /var
> /dev/sda3             49594228   2110072  44924200   5% /home
> /dev/sda1               988088     46128    890956   5% /boot
> tmpfs                  1548864         0   1548864   0% /dev/shm
> 
> I'm open to suggestions on how to proceed.  ideas other than removing the 
> SSD from the perfSONAR device list and just doing a 4TB install on the two 
> disks?
> 
> Kathy
> 
> 
> On 8/19/2013 8:33 AM, Aaron Brown wrote:
>> Hey Kathy,
>> 
>> Unfortunately, yes. RedHat has started to decrease the kickstart
>> functionality a bit, and the most noticeable thing now has been the disk
>> partitioning, or lack thereof. That said, how RedHat decide to partition
>> things? Everything on one of the RAID-1 disks?
>> 
>> Cheers,
>> Aaron
>> On Aug 16, 2013, at 12:41 PM, Kathy Benninger 
>> <>
>>  wrote:
>> 
>>> Is it the case that there is no longer an option to manually configure
>>> the disk storage on a pS-PT 3.3 node?
>>> 
>>> I think there was a thread to that effect, but I can't find it and want
>>> to confirm before I settle with the configuration it wants to give me.
>>> 
>>> (My wish was to restore booting and home directories to an SSD and set
>>> /var primary database storage to a software-mirrored RAID1, but I can't
>>> figure out how to do that.)
>>> 
>>> Except for the unfortunate disk partitioning, the backup/restore and
>>> upgrade appear to have worked as expected.
>>> 
>>> Kathy
>>> 
>>> --------------------------
>>> Kathy Benninger
>>> Pittsburgh Supercomputing Center
>> 
>> 

-----------------------------------------------------------------
| David Mitchell 
()
       Network Engineer IV  |
| Tel: (303) 497-1845                      National Center for  |
| FAX: (303) 497-1818                      Atmospheric Research |
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