Re: loop device/swap problem?

Pavel Machek (pavel@bug.ucw.cz)
Thu, 10 Jun 1999 17:51:59 +0200


Hi!

> 1) dd if=/dev/zero of=swap bs=1024k count=10
> 2) losetup /dev/loop0 swap
> 3) mkswap /dev/loop0
> 4) swapon /dev/loop0
> 5) run the following program.
>
> then the machine stops to respond(no swap activities/no disk access)
> except that console switch is ok and keyboard input is still
> echoed.

Don't do it, then.

It is bad idea to swap onto
1) file on nfs system
2) loop device
3) raid device
4) network (without special patches), special patches allow swapping
over nbd

Don't try to swap over first thing you find. IT WILL NOT WORK. Maybe
this should be documented somewhere?

Pavel

-- 
I'm really pavel@ucw.cz. Look at http://195.113.31.123/~pavel.  Pavel
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