From owner-freebsd-current@FreeBSD.ORG Tue Mar 29 15:20:25 2011 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C263E106564A for ; Tue, 29 Mar 2011 15:20:25 +0000 (UTC) (envelope-from gkontos.mail@gmail.com) Received: from mail-iy0-f182.google.com (mail-iy0-f182.google.com [209.85.210.182]) by mx1.freebsd.org (Postfix) with ESMTP id 8C3128FC14 for ; Tue, 29 Mar 2011 15:20:25 +0000 (UTC) Received: by iyj12 with SMTP id 12so345160iyj.13 for ; Tue, 29 Mar 2011 08:20:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:date:message-id:subject:from:to :content-type; bh=23cmLXx3mErpcYsFRSr8pyV45DFLql3hz2YgkH+pqE8=; b=nTj/L0Y3A2CHrWKJ1+UtS5nvAOY6QjnIzz3iXDX0Ppa76uCCfEyGZYpEP/RxaC04Np WT45VBxa8A1RwLqCXFZkyxrd47XENrQJkj1+GDUIehj84BWNgeSAY0hQ9WCpli9VisLR 9qzBD97NKQQc6V9yniRCh4IY6STNxY8/nD/GE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=PchM1o3wS0Hu9ZE7wkshrmlt1QhSXj5smnlDwi4QRYYB+h+PuAxhoTrZeURukmV8eV mgq+z90pFj84J32EbQti6a1AF9XugHu9CmcJNG5INdk87EICbntmTsoKDXVK7xbVp/0A 3HgOAvtrSMX3aMWtSWoywGbhQJM+hjTZqmzMI= MIME-Version: 1.0 Received: by 10.231.184.5 with SMTP id ci5mr5679006ibb.90.1301410669716; Tue, 29 Mar 2011 07:57:49 -0700 (PDT) Received: by 10.231.33.1 with HTTP; Tue, 29 Mar 2011 07:57:49 -0700 (PDT) Date: Tue, 29 Mar 2011 17:57:49 +0300 Message-ID: From: George Kontostanos To: freebsd-current@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: ZFS dedup and temporary freeze X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Mar 2011 15:20:25 -0000 Hi List, I am using dedup=on for my ezjail /jails directory. I noticed a strange behavior during the installation of the ports tree in the basejail. The system appears to freeze for a while and the cpu appears to be idle during that time. The same behavior is shown when building ports inside the jail. Here is some information about the pool: capacity operations bandwidth pool alloc free read write read write ---------- ----- ----- ----- ----- ----- ----- zhome 15.0G 59.5G 4 14 61.2K 468K zhome 15.0G 59.5G 38 66 107K 68.9K zhome 15.0G 59.5G 43 71 119K 45.0K zhome 15.0G 59.5G 37 67 103K 45.0K zhome 15.0G 59.5G 39 103 102K 4.71M zhome 15.0G 59.5G 42 72 114K 45.0K zhome 15.0G 59.5G 36 59 97.9K 37.0K zhome 15.0G 59.5G 42 69 114K 48.0K zhome 15.0G 59.5G 39 72 105K 43.5K zhome 15.0G 59.5G 33 58 93.4K 42.0K zhome 15.0G 59.5G 44 77 117K 53.4K NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT zhome 74.5G 15.8G 58.7G 21% 1.06x ONLINE - I thought that jails would be a good candidate for dedup. So far I am using it without any issues in my /usr/src and /virtualBox directories. Best Regards -- George Kontostanos aisecure.net