Re: [SSI-users] Production envirement

[Torstein S. H. <tor...@we...>]

Have anyone tried using ENBD (http://www.it.uc3m.es/~ptb/nbd/) with 
OpenSSI? Does it work better then DRBD? So far I've only read up on both 
OpenSSI, ENBD and DRBD. Both ENBD and DRBD have a very "easy" ide behind 
it so from what I can figure out they probably shouldn't have that much 
problems working under OpenSSI, if they both work fine inn the first 
place at least. ENBD looks to me to be the simplest design (mounting a 
block device on another machine and just set it up as a software raid or 
something on top of it).

What kind of problems do you expect with DRBD? If it works it works 
probably most of the time? My big scare is data corruption. If it should 
fail when I reboot one of the machines I can probably live with that (at 
least it increase my chance of not having downtime when I reboot). But 
if the actual server might start to crash as a result of it or even more 
scary, data corruption I need to come up with something else. These 
problems is linked to just DRBD and OpenSSI right or to the actual DRBD 
program? As an alternativ I'm kind of wondernig to use DRBD or ENBD with 
LVS insted (my consern is mostly keeping mail and webpages up) if this 
is a safer solution today.

I guess my last resort would be to try to use a comersial program for 
file mirroring (or buy a NAS/SAN). Any experience with either Veritas's 
solutions or steeleye's (steeleye.com) solution for data 
mirroring/replication?

> hul...@we... wrote:
>
>> I were just wondering how stable is openSSI really? I'm thinking of 
>> using it
>> with drdb to also mirror root filesystem. I'm planning to not use it inn
>> production envirement until 1.1.1 or newer becomes stable. Or at 
>> least that's
>> the plan, I kind of need it now very soon so I'm hoping there will be 
>> a new
>> stable version very soon (road map says 11/04 so I'm hoping it will 
>> be here any
>> day now).
>
>
> En Chiang and I will be doing the stable OpenSSI 1.2.0 release 
> sometime in the next week. The DRBD integration, however, is rather 
> new and minimally tested, so it's going to be released as a 
> supplemental package.
>
> Regards,
>
> Brian
>
>
>
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