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Date:      Fri, 1 Apr 2011 07:18:01 -0700
From:      Freddie Cash <fjwcash@gmail.com>
To:        Pete French <petefrench@ingresso.co.uk>
Cc:        trociny@freebsd.org, freebsd-fs@freebsd.org, freebsd-current@freebsd.org, freebsd-stable@freebsd.org, pjd@freebsd.org
Subject:   Re: Any success stories for HAST + ZFS?
Message-ID:  <BANLkTi=W9uyhYACMfR=Fa4sTr31WfXV=GA@mail.gmail.com>
In-Reply-To: <E1Q5cRC-0000iz-JX@dilbert.ticketswitch.com>
References:  <AANLkTi=zXX93Tzd1fYq3bJ4BEuvUf43y=94fT3rXd6j9@mail.gmail.com> <E1Q5cRC-0000iz-JX@dilbert.ticketswitch.com>

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On Fri, Apr 1, 2011 at 4:22 AM, Pete French <petefrench@ingresso.co.uk> wro=
te:
>> The other 5% of the time, the hastd crashes occurred either when
>> importing the ZFS pool, or when running multiple parallel rsyncs to
>> the pool. =C2=A0hastd was always shown as the last running process in th=
e
>> backtrace onscreen.
>
> This is what I am seeing - did you manage to reproduce this with the patc=
h,
> or does it fix the issue for you ? Am doing more test now, with only a si=
ngle
> hast device to see if it is stable. Am Ok to run without mirroring across
> hast devices for now, but wouldnt like to do so long term!

I have not been able to crash or hang the box since applying Mikolaj's patc=
h.

I've tried the following:
  - destroy pool
  - create pool
  - destroy hast providers
  - create hast providers
  - switch from master to slave via hastctl using "role secondary all"
  - switch from slave to master via hastctl using "role primary all"
  - switch roles via hast-carp-switch which does one provider per second
  - import/export pool

I've been running 6 parallel rsyncs for the past 48 hours, getting a
consistent 200 Mbps of transfers, with just under 2 TB of deduped data
in the pool, without any lockups.

So far, so good.
--=20
Freddie Cash
fjwcash@gmail.com



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