Date: Mon, 8 Apr 2013 18:47:56 +1000 From: Peter Jeremy <peter@rulingia.com> To: Joar Jegleim <joar.jegleim@gmail.com> Cc: "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org> Subject: Re: Regarding regular zfs Message-ID: <20130408084756.GD31958@server.rulingia.com> In-Reply-To: <CAFfb-hqeKqY-8j09BfocDxw5VaBuA=tzS6CZr5Kzor8ZCrBDow@mail.gmail.com> References: <CAFfb-hpt4iKSb0S2fgQ16Hp51KLWJew1Se32yX1cUPYi6pp72g@mail.gmail.com> <20130405211249.GB31958@server.rulingia.com> <CAFfb-hqeKqY-8j09BfocDxw5VaBuA=tzS6CZr5Kzor8ZCrBDow@mail.gmail.com>
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--R3G7APHDIzY6R/pk Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2013-Apr-08 10:29:52 +0200, Joar Jegleim <joar.jegleim@gmail.com> wrote: >I'll check how cache is doing, but as I wrote in my previous reply, the >'slave' server is completely unresponsive, nothing works at all for 5-15 >seconds, when the server is responsive again (can ssh in and so on) I can't >seem to find anything in dmesg or any log hinting about anything at all >that went 'wrong' . If you have iostat/gstat/top/... running, does it hang (stop updating) during this period? Is it pingable during the "hang"? How about iostat/gstat/top/... running on the console? =20 Do you have compression or dedup enabled? >I could try DDB, I'm gonna have to get back to you on that, I haven't >debug'ed FreeBSD kernel before and the system is in production, so I would >have to be cautious. I might be able to try out that during this week . Do you have a test system that you can reproduce the problem on? The reason I ask about DDB it that it would be useful to get a 'ps' whilst the system is hung and it sounds like DDB is the only way to get that. --=20 Peter Jeremy --R3G7APHDIzY6R/pk Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iEYEARECAAYFAlFihDwACgkQ/opHv/APuIdTzACaA2goH3sEQrsMAQq4tEZN5z0T 2tsAoIQVrf9eStN1x0j1FY5pk1rjIYsw =bS8z -----END PGP SIGNATURE----- --R3G7APHDIzY6R/pk--
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