Cloudshell2 and LVM2: a performance test

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Cloudshell2 and LVM2: a performance test

Unread postby crazyquark » Sun Jul 16, 2017 4:58 pm

I wanted to use JBOD SPAN on Cloudshell2 for performance but I was put off by the fact that whenever I will upgrade the setup I would need to have backup of the data, reformat the old array array as independent disks, copy data, create new array, copy data from old disks... you see where this is going.
Software RAID is also a pain, though to be fair I did not investigate mdadm; supposedly there is a way to grow a RAID0 mdadm using a new disk but it looks complicated and error prone: https://serverfault.com/questions/611270/mdadm-remove-disk-from-raid0

LVM2 seemed like the perfect fit for my needs: performance was important but I didn't want a blazing fast setup(I don't have the disks for it anyway) and I wanted to be able to easily upgrade my disks in the future as HDD prices drop.
So this is what I did:
2x2TB each with one disk sized partition on them, added to LVM as physical volumes.
Create a linear volume of 20GB for general purpose stuff and 3.62TB volume, striped, for my NAS storage needs. Said volume would be shared via samba and NFS.

My disks are kinda lame: a 2TB WD Green and a 2TB Seagate (old Barracuda I think?). It's what I had around the house :).

Ran the HeliosLAN test in Windows over Samba for the striped volume and here are the results:
LAN-Test.PNG
LAN-Test.PNG (62.68 KiB) Viewed 108 times


It's not Earth shattering but I think it will do for my needs.
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Re: Cloudshell2 and LVM2: a performance test

Unread postby odroid » Mon Jul 17, 2017 11:08 am

Thank you for sharing the test result of the LVM2.

Can I add your test result in our WiKi page?
http://odroid.com/dokuwiki/doku.php?id= ... erformance
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Re: Cloudshell2 and LVM2: a performance test

Unread postby crazyquark » Mon Jul 17, 2017 8:52 pm

odroid wrote:Thank you for sharing the test result of the LVM2.

Can I add your test result in our WiKi page?
http://odroid.com/dokuwiki/doku.php?id= ... erformance


Yes, of course! :)
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Re: Cloudshell2 and LVM2: a performance test

Unread postby odroid » Tue Jul 18, 2017 11:02 am

Thank you for the permission.
We've updated. :D
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