From: ftaylor@beemer.Eng.Sun.COM (Frank Taylor) Subject: Re: Would it be safe to let only reboot do syn Date: 1 Apr 1993 18:53:09 GMT
In article g76@iamk4515.mathematik.uni-karlsruhe.de, bernd@iamk4515.mathematik.uni-karlsruhe.de (Bernd Wiebelt) writes:
>With all those new SYSTEMV-like inits I was wondering if it would
>be save to leave update out of my rc-script. After all, the system
>syncs if I reboot it (of course, I have to use the soft-reboot),
>so I don't know where I should use update. In fact, it seems to
>me that using update may be quite more dangerous than forgetting
>to sync frequently. If there is a powerdown (pressing reset or
>something) if the system is just syncing, then there is a
>high probability that my system gets trashed. On the other
>hand, if there is such a powerdown with only some data in
>the cache, I loose only this data.
>So, I tend to leave out update and sync by rebooting or
>syncing myself. Could someone tell me, if I am doing
>something really dangerous????
>
>Ciao Bernd
I think you are. Syncing only take a few seconds at most, so the odds that something
catastrophic (ie. power outage) is going to happen during the sync itself seems to be
quite small. Since update runs every 30 seconds you will only have at most 30 seconds worth of unsynced data. By not running update, you will have more unsync data which could create more disk corruption should a power outage occur before you manually
synced or killed the process.
corruption if some thing catastrophic happens .