[Voyage-linux] periodic sync'ing from tmpfs to flash

[Teco Boot]

I use it, on daily (25dec2010).

root at voyage:~# grep sync /etc/crontab                    
10 0 * * * root /usr/local/sbin/sync-tmp-fs >> /var/log/daemon.log 2>&1

root at voyage:~# cat /usr/local/sbin/sync-tmp-fs 
#!/bin/sh
remountrw
/etc/init.d/voyage-sync sync
remountro

No problems detected.
When a recovery takes place, system boots for second time.
Recovery is not recorded in syslog. Maybe voyage-sync should log something in daemon.log or alternative.

I'm using ext3. I'll keep fs readonly, but it is rw every now and then. Ext3 better survives Murphy: failure during voyage-sync or maintenance.

Teco



Op 31 jan 2011, om 15:09 heeft Jeff Ramin het volgende geschreven:

> 
> Thanks Punky - I'll give that a shot.
> 
> Is anybody else doing this? Any problems doing it with running processes?
> 
> 
> On 01/30/2011 07:32 PM, Punky wrote:
>> Try:
>> 
>> remountrw
>> /etc/init.d/voyage-sync sync
>> 
>> On Sat, Jan 29, 2011 at 12:37 AM, Jeff Ramin<jeff.ramin at singlewire.com>  wrote:
>>> Hi folks.
>>> 
>>> I'm running voyage on an Alix board, using flash as the storage system.
>>> I've successfully configured voyage and my app to run in ro mode by
>>> editing /etc/default/voyage-util (I added the directories my app needs to
>>> write to).
>>> 
>>> Everything is great, although I want to protect against losing data in
>>> memory if the machine is not shut down cleanly. The scripts in /etc/init.d
>>> do a great job of sync'ing data from memory to disk(flash) when the
>>> machine is shut down.
>>> 
>>> I'm thinking about occasional syncs. Does this pose any problems w/
>>> running apps actively writing to a tmpfs? What are the recommended
>>> best practices for how to achieve this?
>>> 
>>> Thanks!
> 
> -- 
> Jeff Ramin
> Software Engineer
> Singlewire Software
> 2601 W Beltline Hwy #510
> Madison, WI 53713
> 
> Phone Direct - 608.661.1172
> www.singlewire.com
> 
> 
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