Running venti from plan9port

Running venti from plan9port

[Steven Stallion]

All,

I've updated my notes on running venti on a Linux host using plan9port
on sources.  If you're interested I've added a README for RHEL7 along
with a systemd unit and firewalld service definition.  It's a poor
replacement for a proper AoE shelf, but it has stable since I migrated
my data in 2015.  YMMV.

http://9p.io/sources/contrib/stallion/venti/

Cheers,
Steve

Re: [9fans] Running venti from plan9port

[Lucio De Re]

Steven, I found, on a 32-bit host, that vacfs truncated biggish to big
files on reading them and Cinap suggested that I should look at
possible confusion in size_t types versus 32-bit integers. I never got
around to that, but otherwise, I have also had good service from venti
on p9p.

Not that you need any corroboration from me.

Lucio.

On 12/19/19, Steven Stallion <sstallion@gmail.com> wrote:
> All,
>
> I've updated my notes on running venti on a Linux host using plan9port
> on sources.  If you're interested I've added a README for RHEL7 along
> with a systemd unit and firewalld service definition.  It's a poor
> replacement for a proper AoE shelf, but it has stable since I migrated
> my data in 2015.  YMMV.
>
> http://9p.io/sources/contrib/stallion/venti/
>
> Cheers,
> Steve
>
>
> ------------------------------------------
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Re: [9fans] Running venti from plan9port

[Steven Stallion]

> Steven, I found, on a 32-bit host, that vacfs truncated biggish to big
> files on reading them and Cinap suggested that I should look at
> possible confusion in size_t types versus 32-bit integers. I never got
> around to that, but otherwise, I have also had good service from venti
> on p9p.

Interesting.  I've only used Venti on 64-bit hosts, though I've not
tried using vacfs from Plan 9 from User Space yet.  I have a couple of
large imports I pulled in from other file systems (around 30GB
uncompressed), but haven't seen a case yet where data was truncated or
otherwise corrupted when accessed by Plan 9.

> Not that you need any corroboration from me.

That's actually great to hear - I had always assumed I was running a
fringe configuration, but it has made offsite backup of the venti
store a much simpler affair than before.

Cheers,
Steve

Re: [9fans] Running venti from plan9port

[Lucio De Re]

Let me make sure I'm not misrepresenting this: I have an external USB
drive configured as a Venti device, it is portable to a (small) number
of p9p hosts that have been configured to match its characteristics,
I'm not sure if I actually verified that Plan 9 Venti can also access
it.

I wouldn't recommend that configuration for serious use: first I have
at least one hardware error I will eventually need to address and that
will take some effort; secondly, active Venti on my 32-bit linux-mint
workstation causes shutting down to take tens of minutes - if Venti is
not running, shutting down is as normal as one can expect; then there
is this vacfs issue - which does not occur if I run vacfs on a Plan 9
workstation, to the very same Venti configuration.

Having looked at the USB/SATA hat mentioned here, I confess it is even
more tempting. And what looks really dishy would be the PCI/E,
5-device, ROCK-PI only hat which has only one disadvantage: Plan 9 has
not (yet?) been ported to the ROCK-PI. Take a look:

https://shop.allnetchina.cn/collections/frontpage/products/penta-sata-hat-for-rock-pi-4

seems like a great place to start.

Lucio.

On 12/21/19, Steven Stallion <sstallion@gmail.com> wrote:
>> Steven, I found, on a 32-bit host, that vacfs truncated biggish to big
>> files on reading them and Cinap suggested that I should look at
>> possible confusion in size_t types versus 32-bit integers. I never got
>> around to that, but otherwise, I have also had good service from venti
>> on p9p.
>
> Interesting.  I've only used Venti on 64-bit hosts, though I've not
> tried using vacfs from Plan 9 from User Space yet.  I have a couple of
> large imports I pulled in from other file systems (around 30GB
> uncompressed), but haven't seen a case yet where data was truncated or
> otherwise corrupted when accessed by Plan 9.
>
>> Not that you need any corroboration from me.
>
> That's actually great to hear - I had always assumed I was running a
> fringe configuration, but it has made offsite backup of the venti
> store a much simpler affair than before.
>
> Cheers,
> Steve
>
>
> ------------------------------------------
> 9fans: 9fans
> Permalink:
> https://9fans.topicbox.com/groups/9fans/T1d0010397a54cc60-Mfe0d3c7613855f29900c44fb
> Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
>