Why not
mount --bind fakememinfo /proc/meminfo
inside the VE? Would be easiest, but the
contents will not match real meminfo
because they do not get updated.
I didn't expect this to work ...
... But it does. :-)
I attached a little script to be run as root
inside a VE to fake swap. 512MB are default,
you can change it on the commandline:
Output is, in the example above, cut at "free"
to prevent linewrap:
# free -m
total used free
Mem: 4096 104 3991
-/+ buffers/cache: 104 3991
Swap: 0 0 0
# openvz_fake_swap
total used free
Mem: 4096 104 3991
-/+ buffers/cache: 104 3991
Swap: 512 0 512
# openvz_fake_swap 4096
total used free
Mem: 4096 104 3991
-/+ buffers/cache: 104 3991
Swap: 4096 0 4096
Thanks a lot!
Thomas
#!/bin/bash
SWAP="${1:-512}"
NEW="$[SWAP*1024]"; TEMP="${NEW//?/ }"; OLD="${TEMP:1}0"
umount /proc/meminfo 2> /dev/null
sed "/^Swap\(Total\|Free\):/s,$OLD,$NEW," /proc/meminfo > /etc/fake_meminfo
mount --bind /etc/fake_meminfo /proc/meminfo
free -m
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