Why do I have md running when I do not have any raid storage?
root 32 2 0 09:35 ? 00:00:00 [md]
On 08Feb2015 11:40, jd1008 jd1008@gmail.com wrote:
Why do I have md running when I do not have any raid storage? root 32 2 0 09:35 ? 00:00:00 [md]
It's just a thread, presumably idle. Probably gets started at boot rather than on demand, so if it wasn't there you wouldn't be able to make new md devices. Just conjecture.
Cheers, Cameron Simpson cs@zip.com.au
Shape without form, shade without colour, Paralysed force, gesture without motion; - T.S. Eliot, _The Hollow Men_
On 02/08/2015 02:42 PM, Cameron Simpson wrote:
On 08Feb2015 11:40, jd1008 jd1008@gmail.com wrote:
Why do I have md running when I do not have any raid storage? root 32 2 0 09:35 ? 00:00:00 [md]
It's just a thread, presumably idle. Probably gets started at boot rather than on demand, so if it wasn't there you wouldn't be able to make new md devices. Just conjecture.
Cheers, Cameron Simpson cs@zip.com.au
Would you say the same about the kernel thread ksmd? ps -ef shows it running, and using 0 time.
root 25 2 0 15:58 ? 00:00:00 [ksmd]
On 02/09/15 07:16, jd1008 wrote:
On 02/08/2015 02:42 PM, Cameron Simpson wrote:
On 08Feb2015 11:40, jd1008 jd1008@gmail.com wrote:
Why do I have md running when I do not have any raid storage? root 32 2 0 09:35 ? 00:00:00 [md]
It's just a thread, presumably idle. Probably gets started at boot rather than on demand, so if it wasn't there you wouldn't be able to make new md devices. Just conjecture.
Cheers, Cameron Simpson cs@zip.com.au
Would you say the same about the kernel thread ksmd? ps -ef shows it running, and using 0 time.
root 25 2 0 15:58 ? 00:00:00 [ksmd]
https://www.kernel.org/doc/Documentation/vm/ksm.txt
On 02/08/2015 04:34 PM, Ed Greshko wrote:
On 02/09/15 07:16, jd1008 wrote:
On 02/08/2015 02:42 PM, Cameron Simpson wrote:
On 08Feb2015 11:40, jd1008 jd1008@gmail.com wrote:
Why do I have md running when I do not have any raid storage? root 32 2 0 09:35 ? 00:00:00 [md]
It's just a thread, presumably idle. Probably gets started at boot rather than on demand, so if it wasn't there you wouldn't be able to make new md devices. Just conjecture.
Cheers, Cameron Simpson cs@zip.com.au
Would you say the same about the kernel thread ksmd? ps -ef shows it running, and using 0 time.
root 25 2 0 15:58 ? 00:00:00 [ksmd]
Thanx Ed! What's more expensive: keep duplicate pages, and use a lock to sync them when any one of them is modified, or use a single copy, and do copy-on-write, which still requires that the the page be sync'ed with the written page?
-
Cameron Simpson -
Ed Greshko -
JD