Messages in this thread | | | Subject | RAID + LUKS + LVM performance | From | Mathias Buren <> | Date | Thu, 11 Mar 2010 13:08:56 +0000 |
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Hi,
(please cc me as I'm not subscribed)
I've a friend who's going to set up a fileserver consisting of 8x 1.5TB HDDs, an 8-port PCI-E RAID card (Areca ARC-1220 @ http://www.areca.com.tw/products/pcie.htm ) etc. The plan is create a RAID5 array spanning all the disks, then create 4 partitions. These 4 partitions would be encrypted using LUKS (Twofish or AES256). These 4 encrypted partition would be set up in RAID0 using Linux' software (mdadm), then LVM would be used on top of that (one big PV, one big VG and a big LV or so).
The reason for this is that kcryptd is not multithreaded (afaik). By having 4 encrypted partitions, then md0 on top of them, I'm forcing 4 kcryptd processes to run on all four cpu cores whenever something is written to the disks, which should improve (encryption) performance.
Is this a good way of doing it, or is there a smarter way?
Regards,
Mathias,
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