Re: NBD swap

Hi Alkis,

I still think to have issues with NBD swap.

I noticed that my browsers hang only on fat clients with 2 GB ram that
use swap.

I've some fat clients that do not use swap and they do not crash.

I confirm that I've no folders of the clients in my tmp/nbd-swap.

I use only one NIC on my server (proxy DHCP mode).

Thank you!

---

Giacomo Trovato

Il 17/01/2019 23:14 Vagrant Cascadian ha scritto:

> On 2019-01-17, Giacomo Trovato wrote: 
> 
>> I've set this on my lts.conf:
>> 
>> _USE_LOCAL_SWAP=False_
>> _NBD_SWAP=True_
>> 
>> So, I assume (as per lts.conf manual) that my fat clients have swap if
>> they have less of 800 MB of RAM (but on the manual  NBD_SWAP_THRESHOLD
>> is referred to thin client only!).
>> 
>> But with top command I see swap o my fat clients that have 2GB of RAM!
> 
> By setting NBD_SWAP=True, you're configuring it to use NBD swap in all
> cases regardless of RAM capacity.
> 
>> Then I've this on my syslog on the server:
>> 
>> _Jan 17 08:29:26 ltspmartini nbd_server[8988]: connect from
>> 172.20.18.131, assigned file is /tmp/nbd-swap/172.20.18.131_
>> _Jan 17 08:29:26 ltspmartini nbd_server[8988]: Can't open authorization
>> file /etc/ltsp/nbd-server.allow (No such file or directory)._
>> 
>> In fact I don't have nbd-server.allow on my server and there are no
>> folders inside tmp/nbd-swap.
> 
> That is fine. nbd_server checks for the presence of the nbd-server.allow
> file by default, but should behave sanely if it's missing.
> 
>> I assume that NBD swap doesn't work and perhaps this is the reason why
>> Chromium and Firefox sometimes explode on my fat clients.
> 
> From a fat client, use open a terminal and run "free -m". If it shows
> any swap at all, swap is working.
> 
> live well,
> vagrant 
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