[DRBD-user] How to simulate disk failure
sekilau at gmail.com
Thu Sep 23 08:52:00 CEST 2004
As I asked in a couple of hours ago, I have simulated network failure,
power failure for my HA file server. My last and major concern is, how
to simulate the disk failure. The system has 5 disks (not raided, 4
completely share and 1 partially share). I want to confirm that, if
any one of them fail, the failover will occur and the secondary will
become the primary.
I have 2 idea on mind on testing this:1) I plug out the ide cable to
simulate hte failure; 2) I remove the dm_mod .
First solution may not good because I can't estimate the consequence
to the hardware.
For the second solution, I get this idea from the CTH and it said it
use iptable to simluation network failure and use DM to simulate disk
failure. I don't really get the exact meaning of "DM". I guess it is
that dm_mod. I check that dm_mode is something related to LVM2 disk
mapper. I am not sure what is it about.
So, if any one of you can give me some light on the simulation of disk failure?
Thanks in prior
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