How do I know that my swap is enabled and working properly?

mouse46 · 10-26-2004, 06:03 PM

Hello,

How do I know that my swap is enabled and working properly? I am running fedora core 2 and I have placed my swap on the 4th SATA drive.

Any helps is appreciated

inv|s|ble · 10-26-2004, 06:09 PM

You can type 'man free' from the command line. It just reads /proc/meminfo so you could 'cat /proc/meminfo'

mouse46 · 10-26-2004, 06:25 PM

If I am reading this correctly then the swap is non-existant

Code:

MemTotal:       515848 kB
MemFree:         71748 kB
Buffers:        149196 kB
Cached:         119552 kB
SwapCached:          0 kB
Active:         328176 kB
Inactive:        63804 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:       515848 kB
LowFree:         71748 kB
SwapTotal:           0 kB
SwapFree:            0 kB
Dirty:              56 kB
Writeback:           0 kB
Mapped:         183360 kB
Slab:            46060 kB
Committed_AS:   294388 kB
PageTables:       2608 kB
VmallocTotal:  3612664 kB
VmallocUsed:      2120 kB
VmallocChunk:  3610440 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     4096 kB

swap is seen as 0 kb!!

Should I do a reinstall?

Tinkster · 10-26-2004, 06:37 PM

Nuh :)

Just check your /etc/fstab ... see where swap is
pointing to, whether it's the right device and whether
it's enabled on boot.

Cheers,
Tink

mouse46 · 10-26-2004, 06:55 PM

Thnank you. I checked the /etc/fstab and it was wrong. I corrected it and saved it.

But I have not done anything like this before, how do I enable swap? is it not enabled by default?

Tinkster · 10-26-2004, 07:06 PM

Not if the entry in fstab was wrong

You can turn it on manually by issuing
swapon -a

Cheers,
Tink

black hole sun · 10-26-2004, 07:09 PM

Type in

free -m

If it says 0 under available swap space, then you don't have any.

mouse46 · 10-26-2004, 07:14 PM

fstab was

Quote:

/dev/hdg swap swap defaults 0 0

But that doesnt' exist, so I changed it what it is during my install setup

Quote:

/dev/sdb1 swap swap defaults 0 0

but when I do this 'swapon -a' I get

Quote:

[root@localhost root]# swapon -a
swapon: /dev/sdb1: Device or resource busy

I checked the fstaba again and it is still not showing up.....any thought?

p.s. help received with thanks

Tinkster · 10-26-2004, 07:18 PM

Sorry mate, with those distro's that use evil things
like supermount and other wizardry to protect their
victim, errrh, user from intimate knowledge of their
machine I'm out of my depth :)

You could post the output of
fdisk -l
and
mount
to see what's actually going on... (hopefully)

Cheers,
Tink

mouse46 · 10-26-2004, 07:32 PM

problem was solved when I rebooted the system 3 times, and it is now working. YAY

inv|s|ble, black hole sun and Tinkster, I would like to thank you for the help you have given me, it is greatly appreciated and I Thank you!

I just hope I may be able to repay you for your help in this life (or the next ones

)