Web Hosting Talk : Web Hosting Main Forums : Hosting Security and Technology : No DMA! problem.....

[jpayam]

Hello,
In WHM at server Service Status i see below:
Disk hda3 (/) No DMA! (Click to Enable)
Disk hda1 (/boot) No DMA! (Click to Enable)

there a problem with hda ? because ""No DMA! (Click to Enable) "" is new in Service Status i did not see it before ...

thanks
Payam

[Captian_Spike]

Have you tried Clicking to enable?

I won't go into explaining what DMA is but essientially you need to enable it to make sure your harddrives will perform as they should. There is nothing wrong with the drives its just a software setting that needs correcting. I believe WHM can do this automatically (hence the click thing). If whm cannot do it for you you need to login via ssh and do it manually with hdparm. If both methods fail you have a problem with the kernel and it will need to be recompiled with support for your IDE controller.

The hdparm command would be:

hdparm -d1 /dev/hda

[firewall]

DMA can also be enabled by following way.. ( implemented in FC3 )

Edit /etc/sysconfig/harddisks and uncomment USE_DMA=1


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[hiryuu]

Run 'dmesg' from ssh and look for any IDE errors. You can turn DMA back on but, if it 'became disabled' while the system was running, that's a very discouraging sign.

Probably nothing, but it's a good time to verify your backups.