Messages in this thread | | | Subject | Re: Total system lockup with Alt-SysRQ-L | Date | Mon, 24 Dec 2001 17:07:54 +0000 (GMT) | From | Alan Cox <> |
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> option, would be a one-button "sync up all the disks, forbid any more > writes, save as much state as possbile (registers, memory) to a swap > partition, set a flag for crash dump processing and reboot" capability.
Very hard to do - you can't trust the I/O systems state so the dump code has to verify it hasnt been corrupted, reconfigure the drive it wishes to write to, write the data out using its own non interrupt driven code and then halt the box.
There are folks with patches that do a lot of that (lkcd) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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