USB swapfile creation
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Upgrading Vera's firmware will require setting up the swapfile from scratch as per instructions below. | Upgrading Vera's firmware will require setting up the swapfile from scratch as per instructions below. | ||
| − | ==Instructions== | + | == Instructions == |
| − | + | ||
| − | + | ||
| − | Once you are at the SSH commandline, enter these commands one by one. | + | To set up a swapfile for Vera to use after you have have enabled to store logs on a USB stick as described here: [[Store logs USB]] it is required to SSH into your Vera. This procedure is explained here: [[Logon Vera SSH]]. |
| − | Please note that the forst command can take a few minutes to complete, depending on the speed of your USB stick. | + | |
| + | Once you are at the SSH commandline, enter these commands one by one. Please note that the forst command can take a few minutes to complete, depending on the speed of your USB stick. | ||
| + | |||
| + | 1. Data description for 64Mb swapfile for the filesystem: | ||
| − | |||
dd if=/dev/zero of=/tmp/log/cmh/swapfile bs=1024 count=65536 | dd if=/dev/zero of=/tmp/log/cmh/swapfile bs=1024 count=65536 | ||
| − | 2. Creating the actual swapfile: | + | 2. Creating the actual swapfile: |
| + | |||
mkswap /tmp/log/cmh/swapfile | mkswap /tmp/log/cmh/swapfile | ||
| − | 3. Start using the newly created swapfile: | + | 3. Start using the newly created swapfile: |
| + | |||
swapon /tmp/log/cmh/swapfile | swapon /tmp/log/cmh/swapfile | ||
| − | If for some reason you would like to stop Vera using the swapfile use the following command after SSH-ing into Vera: | + | How to test if swap is enabled: Re-issue the above command and if the file shows busy, then swap is enabled |
| − | swapoff /tmp/log/cmh/swapfile | + | |
| + | swapon /tmp/log/cmh/swapfile | ||
| + | swapon: /tmp/log/cmh/swapfile: Device or resource busy | ||
| + | |||
| + | If for some reason you would like to stop Vera using the swapfile use the following command after SSH-ing into Vera: | ||
| + | |||
| + | swapoff /tmp/log/cmh/swapfile | ||
| + | |||
| + | 4. Persistent Swap after reboot: Edit /etc/init.d/usb and insert the following line in the appropriate place: | ||
| + | |||
| + | swapon /tmp/log/cmh/swapfile | ||
| + | |||
| + | Shown below in /etc/init.d/usb<br> | ||
| + | |||
| + | #!/bin/sh /etc/rc.common | ||
| + | # Copyright (C) 2006 OpenWrt.org | ||
| + | |||
| + | START=39 | ||
| + | start() { | ||
| + | [ -d /proc/bus/usb ] && { | ||
| + | /bin/mount -t usbfs none /proc/bus/usb | ||
| + | <span style="color: rgb(255, 0, 0);">'''/sbin/swapon /tmp/log/cmh/swapfile'''</span> | ||
| + | } | ||
| + | } | ||
| + | <br><br> | ||
==References== | ==References== | ||
please find more info here:<br> | please find more info here:<br> | ||
http://wiki.openwrt.org/doc/howto/usb.storage | http://wiki.openwrt.org/doc/howto/usb.storage | ||
Latest revision as of 04:16, 17 December 2012
HOWTO set up a memory swapfile on a USB stick
*NOTE This feature should only be set up by users with large z-wave networks and some knowledge of Linux internal commands. The functionality has been tested by some beta testers if the userforum at http://forum.mios.com, but using the feature should still be done with caution.
Contents |
[edit] Prerequisites
- Vera 2 hardware
- Vera firmware 1.1.1245 or later
- USB stick attached to Vera
[edit] Introduction
Heres a short manual on how to set up a memory swap file on a USB stick to allocate more memory for your Vera. This is an additional feature once you have set up USB logging for Vera as described here: Store_logs_USB
The instructions contain commands for 4 indivudual steps.
Data description for 64Mb swapfile Creating swapfile Start using swapfile Stop using a swapfile.
Please note that rebooting Vera will require a manual start of the swapfile. Upgrading Vera's firmware will require setting up the swapfile from scratch as per instructions below.
[edit] Instructions
To set up a swapfile for Vera to use after you have have enabled to store logs on a USB stick as described here: Store logs USB it is required to SSH into your Vera. This procedure is explained here: Logon Vera SSH.
Once you are at the SSH commandline, enter these commands one by one. Please note that the forst command can take a few minutes to complete, depending on the speed of your USB stick.
1. Data description for 64Mb swapfile for the filesystem:
dd if=/dev/zero of=/tmp/log/cmh/swapfile bs=1024 count=65536
2. Creating the actual swapfile:
mkswap /tmp/log/cmh/swapfile
3. Start using the newly created swapfile:
swapon /tmp/log/cmh/swapfile
How to test if swap is enabled: Re-issue the above command and if the file shows busy, then swap is enabled
swapon /tmp/log/cmh/swapfile swapon: /tmp/log/cmh/swapfile: Device or resource busy
If for some reason you would like to stop Vera using the swapfile use the following command after SSH-ing into Vera:
swapoff /tmp/log/cmh/swapfile
4. Persistent Swap after reboot: Edit /etc/init.d/usb and insert the following line in the appropriate place:
swapon /tmp/log/cmh/swapfile
Shown below in /etc/init.d/usb
#!/bin/sh /etc/rc.common
# Copyright (C) 2006 OpenWrt.org
START=39
start() {
[ -d /proc/bus/usb ] && {
/bin/mount -t usbfs none /proc/bus/usb
/sbin/swapon /tmp/log/cmh/swapfile
}
}
[edit] References
please find more info here:
http://wiki.openwrt.org/doc/howto/usb.storage
