[support.osuosl.org #34306] Disks specification for osgeo6

[Lance Albertson via RT]

On Fri Sep 19 15:12:35 2025, lr at pcorp.us wrote:
> > Looks like this system has 6 slots which are all currently filled with 480G
> > 2.5" SATA Intel SSD's. So you can't add anymore, but you could replace some.
> > How would you like to proceed?
> >
> Oh didn't realize they were SSDs so it's a combo of RAID1 and  RAID 5 config I
> see. Ideally we'd want to have at least 6 TB of workable disk space. Is it
> possible to replace some of the disks but not all, or you think it's bad to
> have a mix of disks.

So currently this is how the RAID is split:

md0 : active raid1 sdf1[1] sde1[0]
      78084096 blocks super 1.2 [2/2] [UU]

md1 : active raid5 sda1[0] sdd1[3] sdc1[2] sdb1[1]
      1406155776 blocks super 1.2 level 5, 512k chunk, algorithm 2 [4/4] [UUUU]
      bitmap: 0/4 pages [0KB], 65536KB chunk

PV         VG     Fmt  Attr PSize  PFree
/dev/md0   osgeo6 lvm2 a--  74.46g  <22.08g
/dev/md1   ogdata lvm2 a--  <1.31t 1006.01g

LV       VG     Attr       LSize
download ogdata -wi-ao---- 150.00g
home     ogdata -wi-ao----  50.00g
mailman  ogdata -wi-ao----  60.00g
www      ogdata -wi-ao----  75.00g
boot     osgeo6 -wi-ao---- 244.00m
root     osgeo6 -wi-ao----  18.62g
swap     osgeo6 -wi-ao---- <14.90g
var      osgeo6 -wi-ao----  18.62g

Which volume(s) do you want to increase the capacity on? I'm assuming it's
anything on the "ogdata" volume group which is the RAID5.

We could expand the space of that online, however it would require replacing all
four disks with the same size disk. We would have to replace them one by one
allowing the RAID to rebuild. The last replacement should allow us to expand the
pv and vg.

Does this help?

-- 
Lance Albertson
Director
Oregon State University | Open Source Lab