add swap - permission denied

snl · n00b Joined: 16 Apr 2005 Posts: 62

I have installed Gentoo using coLinux on Windows XP. I tried to add swap following to guide at http://wiki.colinux.org/cgi-bin/AddSwapPartition. I login as root but when I try to add an entry with

/dev/cobd/1 swap swap defaults 0 0

I got a permission denied message.

What should I do, please help.

Thanks.

alexlm78 · Posted: Sat Apr 16, 2005 9:08 pm Post subject:

Sorry for my unknowing but, What is CoLinux?????????

:?:

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Given M. Sur · Posted: Sat Apr 16, 2005 9:49 pm Post subject:

snl · n00b Joined: 16 Apr 2005 Posts: 62

I now managed to add the line to /etc/fstab manually using vi /etc/fstab. But when I tried

mkswap /dev/cobd1

then I got the error message saying that there is "no such device".

Given M. Sur · Posted: Sat Apr 16, 2005 10:32 pm Post subject:

snl · n00b Joined: 16 Apr 2005 Posts: 62

arma · Posted: Sun Apr 17, 2005 10:07 am Post subject:

first is the device (the "hardware" associated)
second the mount point (where you can find this hardware after mounting)
third is the type of the "filesystem" (ext3, ntfs, swap, vfat ,.... )
tourth are options (like, allow users to mount a drive, read only, ....)
fifth, I'm not quite sure.

in your first example you try to "attach" a device called /dev/cobd1 to a mount point called 'swap', it's type is swap and the mounts options are defaults.
I don't think the mount point called 'swap' exist anyway... maybe you can have a problem here but it doesn't explain the 'no such device' error

in the second example, un try to attach a device called /dev/cobd1 to a mount point that not exist (you never want to know what is in the swap device ; and surely not, editing it

); the type is still 'swap' but the mounting options are 'sw' (lets say it is a collection of options specialy dedicated to swap partitions)

So i think the second example is better because you don't have the problem whith the unexistant directory and that you use correct options

Hope my english wasn't so bad and that it will help you
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snl · n00b Joined: 16 Apr 2005 Posts: 62

Before I added anything to /etc/fstab, there was already a line

/dev/SWAP none swap sw 0 0.

Do I still need to add the line

/dev/cobd/1 none swap sw 0 0?

I have tried both with and without the line /dev/cobd/1 none swap sw 0 0 but still got "No such device" error when I tried to do

arma · Posted: Sun Apr 17, 2005 12:32 pm Post subject:

i don't know how to work with CoLinux ... but usually we use an indepandant partition for a swap; so maybe you'll have more luck if you make a litle partition (512mo should work fine), then open fdisk (if you created the partion under windows) and check the label of this partition (for exemple say it is /dev/hda5)

then replace /dev/SWAP none swap sw 0 0.
with /dev/hda5 none swap sw 0 0.

once agin, i never worked with colinux, but this is the most common way to deal with swap under linux
the last thing we did'nt think for your problem is :
since your /dev/cobd1 is attached to an real file under your Windows (if i understood well path="\DosDevices\c:\coLinux\swap-file"), maybe you have a permission issue on the windows side... i'll explain: your system (colinux) must surely use an generic username (on windows side) to access the dummy file... maybe this generic user doesn't have write permission on the file ...

again...i'm not quite sure it will work
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