Date: Sat, 26 Mar 2011 10:52:08 -0700 From: Freddie Cash <fjwcash@gmail.com> To: Pawel Jakub Dawidek <pjd@freebsd.org> Cc: FreeBSD Filesystems <freebsd-fs@freebsd.org>, FreeBSD-Current <freebsd-current@freebsd.org>, FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: Any success stories for HAST + ZFS? Message-ID: <AANLkTinmQY7G4Bh3LQdsa4M4B3sNL3zMqVo%2BFiSJnR07@mail.gmail.com> In-Reply-To: <20110325075541.GA1742@garage.freebsd.pl> References: <AANLkTi=hP9RoGRKLacxQKSL_6XzwKJZxAh_OeoT2W3EX@mail.gmail.com> <20110325075541.GA1742@garage.freebsd.pl>
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On Fri, Mar 25, 2011 at 12:55 AM, Pawel Jakub Dawidek <pjd@freebsd.org> wro=
te:
> On Thu, Mar 24, 2011 at 01:36:32PM -0700, Freddie Cash wrote:
>> I've tried with FreeBSD 8.2-RELEASE, 8-STABLE, 8-STABLE w/ZFSv28
>> patches, and 9-CURRENT (after the ZFSv28 commit). =C2=A0Things work well
>> until I start hastd. =C2=A0Then either the system locks up, or hastd cau=
ses
>> a kernel panic, or hastd dumps core.
>
> The minimum amount of information (as always) would be backtrace from
> the kernel and also hastd backtrace when it coredumps. There is really
> decent logging in hast, so I'm also sure it does log something
> interesting on primary or secondary. Another useful thing would be to
> turn on debugging in hast (single -d option for hastd).
>
> The best you can do is to give me the simplest and quickest procedure to
> reproduce the issue, eg. configure two hast resources, put ZFS mirror on
> top, start rsync /usr/src to the file system on top of hast and switch
> roles. The simpler the better.
FreeBSD 8-STABLE r219754 with the ZFSv28 patches applied.
hast.conf:
resource disk-a1 {
local /dev/label/disk-a1
on omegadrive {
remote tcp4://10.20.0.102
}
on alphadrive {
remote tcp4://10.20.0.101
}
}
resource disk-a2 {
local /dev/label/disk-a2
on omegadrive {
remote tcp4://10.20.0.102
}
on alphadrive {
remote tcp4://10.20.0.101
}
}
Following will crash hastd:
service hastd onestart
hastctl create disk-a1
hastctl create disk-a2
hastctl role primary all
hastd backtrace is here:
http://www.sd73.bc.ca/downloads/crash/hast-backtrace.png
I'll try running it with -d to see if there's anything interesting there.
Sure, running it with -d and -F, output to a log file, everything
works well using 2 disks.
Hrm, running it with all 24 disks, I can't make it crash now.
However, I did change the kernel hz from 100 to 1000. I'll see if I
can switch it back to 100 and try the tests again using -dF.
The backtrace listed above is with kern.hz=3D100.
--=20
Freddie Cash
fjwcash@gmail.com
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