limiting lxc swap space

[YOUNGMOON LEE]

This is on https://www.cloudlab.us/status.php?uuid=a859ed48-d430-11e6-ac8d-90e2ba22fee4

cp-1

I would like to use lxc with swap size limit 

lxc.cgroup.memory.memsw.limit_in_bytes = 1G

root@cp-1:/users/leeymcj# lxc-start -n test1

lxc-start: cgmanager.c: cgm_setup_limits: 1378 call to cgmanager_set_value_sync                                           failed: invalid request

lxc-start: cgmanager.c: cgm_setup_limits: 1381 Error setting cgroup memory:lxc/t                                          est1 limit type memory.memsw.limit_in_bytes

lxc-start: start.c: lxc_spawn: 952 failed to setup the cgroup limits for 'test1'

lxc-start: start.c: __lxc_start: 1121 failed to spawn 'test1'

lxc-start: lxc_start.c: main: 341 The container failed to start.

lxc-start: lxc_start.c: main: 345 Additional information can be obtained by sett                                          ing the --logfile and --logpriority options.

As far as I searched,  I need to add boot parameter, so I added /etc/default/grub

GRUB_CMDLINE_LINUX="cgroup_enable=memory swapaccount=1"

and update-grub then reboot. but still container cannot start with the same error.

I think boot parameters are not correctly updated.

How can I update grub boot parameters in cloudlab?

FYI: below is updated /etc/default/grub

# If you change this file, run 'update-grub' afterwards to update

# /boot/grub/grub.cfg.

# For full documentation of the options in this file, see:

#   info -f grub -n 'Simple configuration'

GRUB_DEFAULT=0

#GRUB_HIDDEN_TIMEOUT=0

GRUB_HIDDEN_TIMEOUT_QUIET=true

GRUB_TIMEOUT=4

GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`

GRUB_CMDLINE_LINUX_DEFAULT=""

GRUB_CMDLINE_LINUX="console=ttyS0,115200n8 cgroup_enable=memory swapaccount=1"

GRUB_TERMINAL=serial

GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1"

# Uncomment to enable BadRAM filtering, modify to suit your needs

# This works with Linux (no patch required) and with any kernel that obtains

# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)

#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"

# Uncomment to disable graphical terminal (grub-pc only)

#GRUB_TERMINAL=console

# The resolution used on graphical terminal

# note that you can use only modes which your graphic card supports via VBE

# you can see them in real GRUB with the command `vbeinfo'

#GRUB_GFXMODE=640x480

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux

#GRUB_DISABLE_LINUX_UUID=true

# Uncomment to disable generation of recovery mode menu entries

#GRUB_DISABLE_RECOVERY="true"

# Uncomment to get a beep at grub start

#GRUB_INIT_TUNE="480 440 1"

# The remaining lines were added by Emulab slicefix

# DO NOT ADD ANYTHING AFTER THIS POINT AS IT WILL GET REMOVED.

GRUB_CMDLINE_LINUX="console=ttyS1,115200"

GRUB_TERMINAL=serial

GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=1"

[YOUNGMOON LEE]

It's on ubuntu Trusty, kernel 3.13

[Mike Hibler]

I just looked on that node. If you cat /proc/cmdline you will see that
the added parameters are there. Ditto for "dmesg" output.

I could not say why the options did not do what you are expecting.
Maybe there is something else in the dmesg output that will help.

> *How can I update grub boot parameters in cloudlab?*

>
>
>
>
>
>
>
> FYI: below is updated /etc/default/grub
>
> # If you change this file, run 'update-grub' afterwards to update
> # /boot/grub/grub.cfg.
> # For full documentation of the options in this file, see:
> # info -f grub -n 'Simple configuration'
>
> GRUB_DEFAULT=0
> #GRUB_HIDDEN_TIMEOUT=0
> GRUB_HIDDEN_TIMEOUT_QUIET=true
> GRUB_TIMEOUT=4
> GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
> GRUB_CMDLINE_LINUX_DEFAULT=""

> GRUB_CMDLINE_LINUX="console=ttyS0,115200n8* cgroup_enable=memory
> swapaccount=1*"

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