syslog basic querry
alfred.hitch at gmail.com
Wed Dec 28 02:31:05 UTC 2005
Thanks for tip on unchanged-stats, it's exactly what I was looking for.
May be i will patch busybox tail for it, should be helpful patch IMHO.
pramfs from it's web page looked like meant for NVRAM based logging ?
I didnt quite fully get u-boot thing you pointed.
If I understand it well, that you are saying that u-boot can be told
to leave out an area of RAM (from clearing / init'ing it ?) ? and so
memory snapshot will be retained across boots ?
This should work across processor generated resets .. But, will it
fail if say there has been an external reset pin triggered. External
button reset will send reset / power cycle not only processor but also
all peripherals ?
On 12/27/05, Wolfgang Denk <wd at denx.de> wrote:
> In message <20051227174704.80990.qmail at web413.biz.mail.mud.yahoo.com> you wrote:
> > This would happen on any unix machine. The tail program
> > never reopens the file being monitored. So when syslogd
> It depends. See the "--max-unchanged-stats" option with GNU tar which
> handles exaclty cases like this one.
> > If you can log to another machine that would be best.
> > Otherwise you have to write to the flash. You could write a
> ... or to some other persistent memory. If you use U-Boot as boot
> loader, you can make the syslog buffer persistent, i. e. it will
> survive crashes and reboots. Also, you can use ome RAM for a pramfs
> file systeme which can survice a reboot as well.
> Not to mention that there are other hardware solutions like static
> RAM, FRAM, etc.
> Best regards,
> Wolfgang Denk
> Software Engineering: Embedded and Realtime Systems, Embedded Linux
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
> Due to lack of disk space, this fortune database has been discontinued.
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