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Thread: SSD Cache setup

  1. #1

    SSD Cache setup

    I have a dedicated server with CentOS 6.5 installed(accidentally updated, removed the 6.5 kernel and set default boot to the 6.4 kernel 2.6.32-358.el6.x86_64)
    It has a 500Gb SATA HDD, and a 128Gb SATA SSD.
    I already have the 500Gb HDD setup, with around 40 Gb for /, and the rest for a physical volume part of a volumegroup for KVM(QEMU).
    Now, what I want to do is use the 128Gb SSD for a writethrough cache setup.
    I just want to use caching for the physical volume that is part of the volumegroup.
    What should I do? I absolutely do not want to format the server, under any circumstances.
    So how do I setup the SSD caching?

  2. #2
    Join Date
    Oct 2013
    Ottawa, Canada
    FlashCache ( is a GPL'd solution for that. There are others both free and paid.

    Also see:

  3. #3
    Quote Originally Posted by DBAA View Post
    FlashCache ( is a GPL'd solution for that. There are others both free and paid.

    Also see:
    If I make a volumegroup with the HDD and SSD, will I see an improve in performance?

  4. #4
    Join Date
    Mar 2005
    Flashcache - you just need to build the kernel module and configure - works quite well..
    CPanel Shared and Reseller Hosting, OpenVZ VPS Hosting. West Coast (LA) Servers and Nodes
    Running Linux since 1.0.8 Kernel!
    Providing Internet Services since 1995 and Hosting Since 2004

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