From owner-freebsd-fs@FreeBSD.ORG Mon Dec 8 14:38:40 2014 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 58064CB for ; Mon, 8 Dec 2014 14:38:40 +0000 (UTC) Received: from kerio.tuxis.nl (alcyone.saas.tuxis.net [31.3.111.19]) (using TLSv1.1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id C82E9B24 for ; Mon, 8 Dec 2014 14:38:38 +0000 (UTC) X-Footer: dHV4aXMubmw= Received: from [31.3.104.222] ([31.3.104.222]) by kerio.tuxis.nl (Kerio Connect 8.4.0) for freebsd-fs@freebsd.org; Mon, 8 Dec 2014 15:38:29 +0100 Date: Mon, 8 Dec 2014 15:38:29 +0100 Subject: Mountd, why not use the '-S' flag by default X-Mailer: Kerio Connect 8.4.0/Kerio Connect client X-User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.71 Safari/537.36 Message-ID: <710130010-1872@kerio.tuxis.nl> X-Priority: 3 Importance: Normal MIME-Version: 1.0 MIME-Version: 1.0 MIME-Version: 1.0 From: Mark Schouten To: freebsd-fs@freebsd.org MIME-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg="sha1"; boundary="=-v/092G2AT9LgfiAD1CAy" X-Content-Filtered-By: Mailman/MimeDel 2.1.18-1 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Dec 2014 14:38:40 -0000 --=-v/092G2AT9LgfiAD1CAy Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Hi, I'm using a FreeBSD nfs-server as storage for my Linux KVM-based VPS-platfo= rm. The images reside on the NFS-server. I'm been noticing errors in my VPS disks when running 'zfs set sharenfs=3DX= YZ', probably because of reloads of mountd. While trying to debug that, I ran acros this message in mountd(8): =C2=A0 =C2=A0 =C2=A0-S =C2=A0 =C2=A0 =C2=A0Tell mountd to suspend/resume ex= ecution of the nfsd threads when- =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0ever the exports list is be= ing reloaded. =C2=A0This avoids intermit- =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0tent access errors for clie= nts that do NFS RPCs while the exports =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0are being reloaded, but int= roduces a delay in RPC response while =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0the reload is in progress. = =C2=A0If mountd crashes while an exports =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0load is in progress, mountd= must be restarted to get the nfsd =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0threads running again, if t= his option is used. I can't think of a reason why you wouldn't want to use -S by default.. An '= /etc/rc.d/mountd reload' without it causes even my running Bonnie on a norm= al NFS-share (not via a diskimage) to stop with 'input/output error'. Can s= omeone enlighten me with the drawbacks of using -S ? Met vriendelijke groeten, --=C2=A0 Kerio Operator in de Cloud? https://www.kerioindecloud.nl/ Mark Schouten | Tuxis Internet Engineering KvK:=C2=A061527076=C2=A0| http://www.tuxis.nl/ T: 0318 200208 | info@tuxis.nl= --=-v/092G2AT9LgfiAD1CAy Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Description: Electronic Signature S/MIME Content-Transfer-Encoding: base64 MIIRwQYJKoZIhvcNAQcCoIIRsjCCEa4CAQExCzAJBgUrDgMCGgUAMAsGCSqGSIb3DQEHAaCCDt4w ggUbMIIEA6ADAgECAhAsv+VdGX6YsSHI/WRu2j2JMA0GCSqGSIb3DQEBBQUAMIGTMQswCQYDVQQG EwJHQjEbMBkGA1UECBMSR3JlYXRlciBNYW5jaGVzdGVyMRAwDgYDVQQHEwdTYWxmb3JkMRowGAYD VQQKExFDT01PRE8gQ0EgTGltaXRlZDE5MDcGA1UEAxMwQ09NT0RPIENsaWVudCBBdXRoZW50aWNh dGlvbiBhbmQgU2VjdXJlIEVtYWlsIENBMB4XDTE0MDcwMTAwMDAwMFoXDTE1MDcwMTIzNTk1OVow HjEcMBoGCSqGSIb3DQEJARYNbWFya0B0dXhpcy5ubDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCC AQoCggEBANHu3SxlMZOG5GA0/mqtRXR1QmWwhUXzmCIprI0IPtSBWSA31YBJ5qcmXRhLzaiTB3Fr 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