> Hongwei Li wrote: >>>Hongwei Li wrote: >> >> >>>>Yes, it works. Thank you very much! Now, I have questions: >>>> >>>>1. What's the use of mkswap -L SWAP-hda7 /dev/hda7? I don't see any >>>>effect? >>> >>>It *should* be setting the "filesystem label" of the partition to >>>"SWAP-hda7" so that mkswap can find it by name rather than being needed >>>to be told where exactly the swap partition is. >>> >>> >>>>2. When I put the original entry back to /etc/fstab as: >>>>LABEL=SWAP-hda7 swap swap defaults 0 0 >>>> >>>>it does not work again. I have to put /dev/hda7 in it. How to let the >>>>original entry work -- the above mkswap ... does not have effect? >>> >>>Was your system swapping to that partition at the time you did the >>> mkswap? >>> >>> > Why do we need those LABEL=... in fstab? >>> >>>The idea is that labels should be less of a moving target than device >>>names. For example, lots of people found that their SATA drives moved >>>from being /dev/hdX to /dev/sdX fairly recently. Labelling filesystems >>>means that the OS can find them no matter what the device name is. This >>>isn't without its problems (e.g. when moving disks between machines, >>>resulting in multiple partitions with the same labels), but that's why >>>they're there. >>> >>>Labels for swap partitions are discussed at: >>>https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=127892 >>> >>>Paul. >>> >>>-- >> >> >> Here is what I did in the order: >> >> # swapoff -a >> >> # mkswap -L SWAP-hda7 /dev/hda7 >> Setting up swapspace version 1, size = 2097410 kB >> >> # vi /etc/fstab >> (set: >> LABEL=SWAP-hda7 swap swap defaults 0 0 >> ) >> >> # swapon -a >> swapon: cannot find the device for LABEL=SWAP-hda7 > > I just tried this on my own FC3 box and it worked. Is this the only swap > partition in use on your machine? > > Paul. > > -- Yes, it is. Hongwei
