From owner-freebsd-questions@FreeBSD.ORG Thu Oct 6 09:21:59 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0CC711065676 for ; Thu, 6 Oct 2011 09:21:59 +0000 (UTC) (envelope-from kraduk@gmail.com) Received: from mail-yw0-f54.google.com (mail-yw0-f54.google.com [209.85.213.54]) by mx1.freebsd.org (Postfix) with ESMTP id C0A0F8FC0A for ; Thu, 6 Oct 2011 09:21:58 +0000 (UTC) Received: by ywp17 with SMTP id 17so3021871ywp.13 for ; Thu, 06 Oct 2011 02:21:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=3ccoKgaEM3CjrLNChOa/OdiMJQUFWhd20oCq1MJ+UyY=; b=WSZRqwkeodxjJ+jSYq+LSnJy3A6oXG9qIkgYwm0cNgDTIjmUhnAKduDQjK7idiKlPR ICjG6Ymwy9ek2o5EKPgwncDIaVyjwX9N5NUxzHJVDQMT4aKmtwgRRpUf1rno+CLyNRJF K2sfuJ33kfrL/vFmdNrL8N3GxuKM960MJkuts= MIME-Version: 1.0 Received: by 10.236.181.35 with SMTP id k23mr2001787yhm.93.1317892917924; Thu, 06 Oct 2011 02:21:57 -0700 (PDT) Received: by 10.236.105.166 with HTTP; Thu, 6 Oct 2011 02:21:57 -0700 (PDT) In-Reply-To: <1317839111.86728.YahooMailClassic@web121214.mail.ne1.yahoo.com> References: <1317839111.86728.YahooMailClassic@web121214.mail.ne1.yahoo.com> Date: Thu, 6 Oct 2011 10:21:57 +0100 Message-ID: From: krad To: Jason Usher Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-questions@freebsd.org Subject: Re: Parallel fscks on large filesystems ... wondering about maxdsiz setting... X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 06 Oct 2011 09:21:59 -0000 On 5 October 2011 19:25, Jason Usher wrote: > Old 6.4-RELEASE system. > > Two filesystems exist, each of which is on its own raid controller. > > (Background fsck is not workable for various reasons that are tl;dr.) > > So, theoretically, doing both fscks at the same time is workable, since > each of them are on their own controller, and no disk/controller resources > are shared. > > HOWEVER, due to the large size and dense inode usage, we are forced to set: > > kern.maxdsiz="4096000000" > > And my question is: > > If I run two fscks at the same time, do I need to up this to 8192000000, > or is this a per-process limit and I can run several processes that big, > while leaving the value at 4096000000 ? > > (16 GB of ram, so either way we're well below) > > Thanks! > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to " > freebsd-questions-unsubscribe@freebsd.org" > If this becomes a major issue for you why not upgrade to 9 when its out then you can have softupdates with journaling and remove most cases where you need to run fsck, or make the jump to zfs. zfs will obviously require a bit more thought.