swap partition fails after recompile kernel

IamDaniel · 01-08-2004, 01:13 PM

I am dual-boot Slackware and FreeBSD (also Win2K). Slackware and FreeBSD share the same swap partition (known as hdb8) with space around +262MB.

After compile 2.4.23 kernel, the swap partition is not recognized..it was perfectly work in 2.4.5, as I still keep the 2.4.5 kernel.

The only changed I made long time ago was the line in /etc/rc.d/rc.S:

Quote:

# enable swapping
19 awk -- '/swap/ && ($1 !~ /#/) { system("mkswap "$1"") }'
/etc/fstab
20 /sbin/swapon -a
#
<--refer from the Linux-mini-HOWTOs/Linux+FreeBSD-->

Below is the boot message claims the errors:

Quote:

mkswap: error: swap area needs to be at least 40kB
Usage: mkswap [-c] [-v0|-v1] [-pPAGESZ] /dev/name [blocks]
swapon: /dev/hdb8: No such device

For more info:
This is on the linux 2.4.23:

Quote:

root@darkstar:~# uname -a
Linux darkstar 2.4.23 #1 SMP Sun Jan 4 20:57:29 MYT 2004 i686 unknown
[00:31am] root@darkstar:~# free
total used free shared buffers cached
Mem: 158724 34664 124060 0 2476 22824
-/+ buffers/cache: 9364 149360
Swap: 0 0 0

This is on the linux 2.4.5:

Quote:

root@darkstar:~# uname -a
Linux darkstar 2.4.5 #6 Fri Jun 22 01:38:20 PDT 2001 i686 unknown
root@darkstar:~# free
total used free shared buffers cached
Mem: 158428 39976 118452 0 2548 28648
-/+ buffers/cache: 8780 149648
Swap: 263036 0 263036

what I am supposed to do, does the kernel being changed and needed to do some modification? Help me...thanks..

Tinkster · 01-08-2004, 01:18 PM

Quote:

swapon: /dev/hdb8: No such device

Please

cat /etc/fstab
fdisk -l /dev/hdb

Cheers,
Tink

bhaskie · 01-08-2004, 01:51 PM

Error message says it can't even find the second hard drive (hdb)
Check the entry for /dev/hdb8 as "swap" partition in /etc/fstab.
If that doesnt work out, check the kernel's config file for any missing entry.
Maybe you disabled something while creating the config file.

IamDaniel · 01-08-2004, 02:22 PM

Ahh...sorry..a bit late for reply...

well..

This is appended of fstab output:

Quote:

/dev/hdb1 / ext2 defaults 1 1
/dev/hdb5 /home ext2 defaults 1 1
/dev/hdb6 /pub ext2 defaults 1 1
/dev/hda8 /mnt/songs vfat defaults 1 0
/dev/hdb8 none swap sw 0 0
none /dev/pts devpts gid=5,mode=620 0 0
none /proc proc defaults 0 0

This is appended of fdisk output:

Quote:

Disk /dev/hdb: 15 heads, 63 sectors, 10585 cylinders
Units = cylinders of 945 * 512 bytes

Device Boot Start End Blocks Id System
/dev/hdb1 * 1 4142 1957063+ 83 Linux native
/dev/hdb2 4143 4762 292950 5 Extended
/dev/hdb3 4763 10585 2751367+ a5 BSD/386
/dev/hdb5 4143 4555 195111 83 Linux native
/dev/hdb6 4556 4762 97776 83 Linux native

This is appended of mtab output:

Quote:

/dev/hdb1 / ext2 rw 0 0
/dev/hdb5 /home ext2 rw 0 0
/dev/hdb6 /pub ext2 rw 0 0
/dev/hda8 /mnt/songs vfat rw 0 0
none /dev/pts devpts rw,gid=5,mode=620 0 0
none /proc proc rw 0 0
/dev/hda7 /mnt/assign vfat rw 0 0

hmmm..I got some point..why all the output don't seems to recognize the hdb8 ? The odd thing is why linux 2.4.5 just use that swap ...

IamDaniel · 01-08-2004, 02:32 PM

A reminder that I am using the freebsd to create the swap partition..it should works, as I did for 2.4.5...

Tinkster · 01-08-2004, 02:33 PM

Maybe you had the old kernel compiled with
support for other partition types, and skipped
this in the 2.4.23 one?

Cheers,
Tink

IamDaniel · 01-08-2004, 02:43 PM

mmmh...perhaps...then I might recompile my kernel..

I'll be back, guru..

ac1980 · 01-08-2004, 02:45 PM

Is your 2nd HD a standard IDE? Or if it's not, did you enable support for it in the kernel?
I suppose your base system is on hda (1st disk), am i right?
Boot your previous kernel, then try (as root)
cat /proc/ide/hdb/model

**Sorry, didn't get your fdisk output