I'm still curious as to why astdb needs to be on ramdisk. I also read from
astdb several times for every incoming call, but I don't write to it. And
Linux does a lot of filesystem cacheing... essentially the linux kernel
uses every available byte of ram to cache data and programs so that you are
not reading from physical disk (or ssd) every time you read from a file.
So until you perform a db write I am assuming that the vast majority of my
astdb reads are optimized by the linux filesystem and come from ram not ssd.
Right? Wrong?
David
On Sat, Jul 8, 2017 at 12:13 PM, The Cadillac Kid via Astlinux-users <
astlinux-users@lists.sourceforge.net> wrote:
> I run my asterisk DB in RAM on my regular asterisk servers.. I have an
> agent that automatically backs that up every so often to set a of files..
> if my asterisk system crashes then it reloads my asterisk DB on boot..
> persistence is maintained via storing my asterisk DB as a datadump style
> file on regular storage and not just copying the astdb file (you'll corrupt
> it if you do that)..
>
> its fast.. I use a LOT of astdb lookups in my normal call processing..
> -Christopher
>
>
> ------------------------------
> *From:* David Kerr <da...@kerr.net>
> *To:* Mehdi Shirazi <mahdi_shir...@yahoo.com>; AstLinux Users Mailing
> List <astlinux-users@lists.sourceforge.net>
> *Sent:* Saturday, July 8, 2017 12:06 PM
> *Subject:* Re: [Astlinux-users] RAMdisk and HA
>
> Astlinux already uses a tmpfs for most files. For those specific files
> that need to be persistent astlinux uses a soft link to /mnt/kd which is
> persistent store. You can see this e.g. in /var/spool/asterisk. Is there
> a specific file you want to have on tmpfs that is not?
>
> Astlinux has HA for the external network interface. If the primary
> internet link goes down it can failover to a second interface. If you are
> asking about application layer asterisk HA then I am not aware of anything
> specific in Astlinux for that -- you would need to research how to do that
> yourself
>
> Use rsync for file synchronization? That is what I use for daily backup
> to a remote system.
>
> I can understand the interest in HA, but I'm curious what performance
> issues you are running into with the filesystem, Astlinux is already very
> efficient here.
>
> Regards,
> David
>
> On Sat, Jul 8, 2017 at 1:33 AM, Mehdi Shirazi via Astlinux-users <
> astlinux-users@lists.sourceforge.net> wrote:
>
> Hi
> Thanks for maintaining good project.
> 1-Is it possible to put internal Asterisk database in RAMdisk (tmpfs) for
> performance and save other persistence database in another database?
> 2-Is there any HA solution ? (Active /Standby, keepalived)
> 3-Is there any automatic two way file(database) synchronization utility ?
>
> Regards
> M.Shirazi
>
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