From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CFD1FC433E7 for ; Thu, 15 Oct 2020 10:58:04 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4C0B1212CC for ; Thu, 15 Oct 2020 10:58:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=citrix.com header.i=@citrix.com header.b="fUV5EKo1" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4C0B1212CC Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=citrix.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.7266.18946 (Exim 4.92) (envelope-from ) id 1kT0x8-0008EL-0U; Thu, 15 Oct 2020 10:57:46 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 7266.18946; Thu, 15 Oct 2020 10:57:45 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kT0x7-0008EE-Rn; Thu, 15 Oct 2020 10:57:45 +0000 Received: by outflank-mailman (input) for mailman id 7266; Thu, 15 Oct 2020 10:57:44 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kT0x6-0008E9-PO for xen-devel@lists.xenproject.org; Thu, 15 Oct 2020 10:57:44 +0000 Received: from esa1.hc3370-68.iphmx.com (unknown [216.71.145.142]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id b44f7df0-ee64-47fc-a650-dc65cf9c00ca; Thu, 15 Oct 2020 10:57:43 +0000 (UTC) Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kT0x6-0008E9-PO for xen-devel@lists.xenproject.org; Thu, 15 Oct 2020 10:57:44 +0000 X-Inumbo-ID: b44f7df0-ee64-47fc-a650-dc65cf9c00ca Received: from esa1.hc3370-68.iphmx.com (unknown [216.71.145.142]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id b44f7df0-ee64-47fc-a650-dc65cf9c00ca; Thu, 15 Oct 2020 10:57:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1602759463; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=LTw4HxuM2Hd9gC5Eofd+gOjQV+QnRt0hWS4gjM7xh+8=; b=fUV5EKo11EwSfk+SHHGHnoTHT9GU4/cL4BAOpKtrp0Nu/Lywk791HmgG oA6P/c5gTnxKW4wygZBT2Pv62uSTgoLb1AMi/49UUYPpwuxahrMt1yoxI 37VNfSZj6dPBq+R+QpHqjvnnLD/zkKlkOgUnq6/kO5vgH7w6U2gkFKJqk U=; Authentication-Results: esa1.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none IronPort-SDR: X6Ks6eBeFu7jQlD+vRQ225PMgZ7g1mUtc+3TOLAD5U9SgTGYDsNus9G2Zu6DfOthWL2HgHUH0Z pIizAmSJ6ZebloRm4hcpdl3qKE3Tg6BBhoAyhM7qnrHYEROVsnk7xxVsIi8Wck8L5yHfMm0g09 w5ZABeSZfoZr4jlspLPkCEP5SQp1U/U5aRRoEljxdHVgkczWFxWqlWcPva4pWAAOLXbLdUAbuS uZQ+TtusKIW/k6y22MHpQ3lfTCEOvEr9E7zYt8vlrEdj9oGGnGZ4jD3GEbc4n+C9U2ED9Nq4Ps VJA= X-SBRS: 2.5 X-MesageID: 29393780 X-Ironport-Server: esa1.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.77,378,1596513600"; d="scan'208";a="29393780" Date: Thu, 15 Oct 2020 12:57:35 +0200 From: Roger Pau =?utf-8?B?TW9ubsOp?= To: "J. Roeleveld" CC: "xen-devel@lists.xenproject.org" Subject: Re: xen-blkback: Scheduled work from previous purge is still busy, cannot purge list Message-ID: <20201015105735.GB67506@Air-de-Roger> References: <15146361.Z0tdQxPx3m@eve> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Disposition: inline In-Reply-To: <15146361.Z0tdQxPx3m@eve> X-ClientProxiedBy: AMSPEX02CAS01.citrite.net (10.69.22.112) To FTLPEX02CL06.citrite.net (10.13.108.179) On Tue, Oct 13, 2020 at 07:26:47AM +0200, J. Roeleveld wrote: > Hi All, > > I am seeing the following message in the "dmesg" output of a driver domain. > > [Thu Oct 8 20:57:04 2020] xen-blkback: Scheduled work from previous purge is > still busy, cannot purge list > [Thu Oct 8 20:57:11 2020] xen-blkback: Scheduled work from previous purge is > still busy, cannot purge list > [Thu Oct 8 20:57:44 2020] xen-blkback: Scheduled work from previous purge is > still busy, cannot purge list > [Thu Oct 8 20:57:44 2020] xen-blkback: Scheduled work from previous purge is > still busy, cannot purge list > > > Is this something to worry about? Or can I safely ignore this? What version of the Linux kernel are you running in that driver domain? Is the domain very busy? That might explain the delay in purging grants. Also is this an sporadic message, or it's constantly repeating? Roger.