I'm looking for advice on using Magic SysRq Key Sequences over DRAC5 ssh(see http://en.wikipedia.org/wiki/Magic_SysRq_key for background reading on the subject).
We have Dell 1950 and 2950 servers with DRAC version 1.20 firmware, and normally use putty or OpenSSH to connect. As far as well can tell the serial 'break' does not equate to the SysRq key as documented. These servers run Debian Linux, and we periodically have problems with out of control memory situations. We could save servers from a hard reboot by sending Magic SysReq commands such as "m" and "f" (to dump Linux Kernel memory stats and invoke the Out of Memory Killer (oom-killer). Or make a reboot nicer by syncing disks first. These commands work fine directly from an attached keyboard (e.g. Alt-SysRq-m). Can we get Magic SysRq over DRAC5? -- Bryce Nesbitt The Berkeley Electronic Press bepress: 10 years of accelerating and enhancing the flow of scholarly ideas
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