On 5 December 2014 at 20:27, Bruce Dubbs <[email protected]> wrote:
> Richard Melville wrote: > >> Just a point of information: the swap script set to run at S20swap in >> /etc/rc.d/rcS.d comes up too soon and displays an error message, but >> S60swap works OK. >> >> Obviously, working with USB flash media slows everything down a tad. >> Maybe >> the run order could be changed in the book; I can't see that it would >> effect anybody else adversely. >> > > This is the first time I've seen this. I agree that putting swap at the > end of rcS wouldn't affect anything, but I'm not sure why that is > necessary. After all / is already mounted so the disk should be available. > > Do you have swap on a drive separate from the / partition? > > I'll note that if your system actually uses swap, then the speed of the > process is really slowed. Actual use of swap on a USB flash system would > be truly awful. IMO, no swap at all would be better. > > I'm open to changing when swap is initiated, but question if it's really > needed. Yes, swap is on a separate USB flash partition, but it's not used (I have 8GB of RAM), and / is on an SSD. The main reason for the swap partition is for hibernate; I'm running desktop computers and servers from external batteries. I realise that this is an unusual setup, but I wouldn't claim it to be unique. The SSDs are formatted with btrfs, and btrfs doesn't support swap so I had to place it somewhere else. As I use USB flash drives for booting, and /boot is only 100MB, it made sense to me to use some of the otherwise wasted capacity for swap/hibernate. As I say, swapping hasn't been necessary thus far, and hibernate is a failsafe in case a battery dies, so, again. probably rarely used (he says in hope). Richard
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