From owner-freebsd-questions@FreeBSD.ORG Mon Mar 14 09:38:25 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CDE8816A4CE for ; Mon, 14 Mar 2005 09:38:25 +0000 (GMT) Received: from mailgw.dgrp.sk (mailgw.dgrp.sk [195.28.127.4]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7767443D5A for ; Mon, 14 Mar 2005 09:38:24 +0000 (GMT) (envelope-from lk@tempest.sk) Received: by mailgw.dgrp.sk (Postfix, from userid 1003) id 9AB3834A5B3; Mon, 14 Mar 2005 10:38:22 +0100 (CET) Received: from webmail.tempest.sk (unknown [195.28.100.38]) by mailgw.dgrp.sk (Postfix) with ESMTP id A475A34A5A2 for ; Mon, 14 Mar 2005 10:38:19 +0100 (CET) Received: from lk.tempest.sk ([195.28.109.47]) by webmail.tempest.sk (Lotus Domino Release 6.5.2) with ESMTP id 2005031410381856-2400 ; Mon, 14 Mar 2005 10:38:18 +0100 Received: from lk.tempest.sk (localhost [127.0.0.1]) by lk.tempest.sk (8.13.1/8.12.9) with ESMTP id j2E9c23N024431; Mon, 14 Mar 2005 10:38:02 +0100 (CET) (envelope-from koren@lk.tempest.sk) Received: (from koren@localhost) by lk.tempest.sk (8.13.1/8.13.1/Submit) id j2E9c2EM024428; Mon, 14 Mar 2005 10:38:02 +0100 (CET) (envelope-from koren) Date: Mon, 14 Mar 2005 10:38:02 +0100 (CET) Message-Id: <200503140938.j2E9c2EM024428@lk.tempest.sk> From: Ludo Koren To: freebsd-questions@freebsd.org X-MIMETrack: Itemize by SMTP Server on Domino1/DGRP(Release 6.5.2|June 01, 2004) at 14.03.2005 10:38:18, Serialize by Router on Domino1/DGRP(Release 6.5.2|June 01, 2004) at 14.03.2005 10:38:19, Serialize complete at 14.03.2005 10:38:19 X-Spam-Checker-Version: SpamAssassin 3.0.2 (2004-11-16) on mailgw X-Spam-Level: X-Spam-Status: No, score=-2.5 required=5.0 tests=AWL,BAYES_00 autolearn=ham version=3.0.2 Subject: Backup on DDS-4 tapes X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Mar 2005 09:38:26 -0000 Hi, I am using 5.2.1-RELEASE-p3 for backup on DDS-4 tapes 40GB in size. # df -k Filesystem 1K-blocks Used Avail Capacity Mounted on /dev/vinum/root 1016162 157405 777465 17% / devfs 1 1 0 100% /dev /dev/vinum/usr 84746248 54467390 23499160 70% /usr procfs 4 4 0 100% /proc # camcontrol devlist -v scbus0 on ahd0 bus 0: at scbus0 target 3 lun 0 (pass0,da0) at scbus0 target 9 lun 0 (pass1,da1) at scbus0 target 10 lun 0 (sa0,pass2) < > at scbus0 target -1 lun -1 () scbus1 on ahd1 bus 0: at scbus1 target 1 lun 0 (pass3,da2) at scbus1 target 8 lun 0 (pass4,da3) < > at scbus1 target -1 lun -1 () scbus-1 on xpt0 bus 0: < > at scbus-1 target -1 lun -1 (xpt0) # /sbin/dump -SLu0 -B 41943040 -C 32 -f /dev/sa0 /usr DUMP: Date of this level 0 dump: Mon Mar 14 10:29:51 2005 DUMP: Date of last level 0 dump: the epoch DUMP: Dumping snapshot of /dev/vinum/usr (/usr) to /dev/sa0 DUMP: mapping (Pass I) [regular files] DUMP: Cache 32 MB, blocksize = 65536 DUMP: mapping (Pass II) [directories] DUMP: estimated 54189311 tape blocks on 1.29 tape(s). # # mt -f /dev/sa0 status Mode Density Blocksize bpi Compression Current: 0x26:DDS-4 variable 97000 DCLZ ---------available modes--------- 0: 0x26:DDS-4 variable 97000 DCLZ 1: 0x26:DDS-4 variable 97000 DCLZ 2: 0x26:DDS-4 variable 97000 DCLZ 3: 0x26:DDS-4 variable 97000 DCLZ --------------------------------- Current Driver State: at rest. --------------------------------- File Number: 0 Record Number: 0 Residual Count 0 I am using the following command: # /sbin/dump -Lu0 -B 41943040 -C 32 -f /dev/sa0 /usr or # /sbin/dump -aLu0 -C 32 -f /dev/sa0 /usr Why I cannot dump the filesystem on 2 tapes (it takes 3, it seems it works without compression) no matter if I use dump or cpio? What I am doing wrong? Any hints appreciated. Thank you very much in advance. Regards, lk