From owner-freebsd-questions@freebsd.org Sat Sep 21 18:54:15 2019 Return-Path: Delivered-To: freebsd-questions@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 1130512C7BB for ; Sat, 21 Sep 2019 18:54:15 +0000 (UTC) (envelope-from 4250.10.freebsd-questions=freebsd.org@email-od.com) Received: from s1-b0c6.socketlabs.email-od.com (s1-b0c6.socketlabs.email-od.com [142.0.176.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 46bKWB2cshz3NY6 for ; Sat, 21 Sep 2019 18:54:14 +0000 (UTC) (envelope-from 4250.10.freebsd-questions=freebsd.org@email-od.com) DKIM-Signature: v=1; a=rsa-sha256; d=email-od.com;i=@email-od.com;s=dkim; c=relaxed/relaxed; q=dns/txt; t=1569092054; x=1571684054; h=content-transfer-encoding:content-type:mime-version:references:in-reply-to:message-id:subject:to:from:date:x-thread-info; bh=KnlMYGiiH6VIbiMPPpqmCkW+WKdeT4P7hU7tTtP3uyU=; b=VqxjLme9s8PhTkVk79BW5jk7Nu/E3kJUUgyKoTau+rXWkxAFSPmtI+dm47fVZ3lemFcHRhkzKekyEGO3x50hAFELt94RyrHIcuMvE8M07oUHtYwNDt8Ww9KSS7BVuFu+/TjvFUcE1+wIseluueVO8EMEukaMTocCeKIt1J2FsQQ= X-Thread-Info: NDI1MC4xMi4xYzMwMDAwMDExNmM3ZGUuZnJlZWJzZC1xdWVzdGlvbnM9ZnJlZWJzZC5vcmc= Received: from r2.us-west-2.aws.in.socketlabs.com (r2.us-west-2.aws.in.socketlabs.com [142.0.190.2]) by mxsg2.email-od.com with ESMTP(version=Tls12 cipher=Aes256 bits=256); Sat, 21 Sep 2019 14:54:10 -0400 Received: from smtp.lan.sohara.org (EMTPY [185.202.17.215]) by r2.us-west-2.aws.in.socketlabs.com with ESMTP(version=Tls12 cipher=Aes256 bits=256); Sat, 21 Sep 2019 14:54:09 -0400 Received: from [192.168.63.1] (helo=steve.lan.sohara.org) by smtp.lan.sohara.org with smtp (Exim 4.91 (FreeBSD)) (envelope-from ) id 1iBkWF-000DcS-HK for freebsd-questions@freebsd.org; Sat, 21 Sep 2019 19:54:07 +0100 Date: Sat, 21 Sep 2019 19:54:07 +0100 From: Steve O'Hara-Smith To: freebsd-questions@freebsd.org Subject: Re: multi-volume archives Message-Id: <20190921195407.256410cee20741ef86f2c1e0@sohara.org> In-Reply-To: <20190921182558.GB15412@admin.sibptus.ru> References: <20190921063003.GA81956@admin.sibptus.ru> <20190921093801.4638945715fe79eb6a99b36f@sohara.org> <20190921182558.GB15412@admin.sibptus.ru> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.32; amd64-portbld-freebsd12.0) X-Clacks-Overhead: "GNU Terry Pratchett" Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 46bKWB2cshz3NY6 X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; dkim=pass header.d=email-od.com header.s=dkim header.b=VqxjLme9; dmarc=none; spf=pass (mx1.freebsd.org: domain of 4250.10.freebsd-questions=freebsd.org@email-od.com designates 142.0.176.198 as permitted sender) smtp.mailfrom=4250.10.freebsd-questions=freebsd.org@email-od.com X-Spamd-Result: default: False [-1.73 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.96)[-0.956,0]; R_DKIM_ALLOW(-0.20)[email-od.com:s=dkim]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+ip4:142.0.176.0/20]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; TO_DN_NONE(0.00)[]; DMARC_NA(0.00)[sohara.org]; FORGED_SENDER_VERP_SRS(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_HAM_LONG(-0.99)[-0.990,0]; RCVD_COUNT_THREE(0.00)[4]; IP_SCORE(0.22)[ip: (-0.45), ipnet: 142.0.176.0/22(0.92), asn: 7381(0.69), country: US(-0.05)]; MV_CASE(0.50)[]; DKIM_TRACE(0.00)[email-od.com:+]; RCVD_IN_DNSWL_NONE(0.00)[198.176.0.142.list.dnswl.org : 127.0.15.0]; ENVFROM_VERP(0.00)[]; FORGED_SENDER(0.00)[steve@sohara.org,4250.10.freebsd-questions=freebsd.org@email-od.com]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_LAST(0.00)[]; ASN(0.00)[asn:7381, ipnet:142.0.176.0/22, country:US]; FROM_NEQ_ENVFROM(0.00)[steve@sohara.org,4250.10.freebsd-questions=freebsd.org@email-od.com]; MID_RHS_MATCH_FROM(0.00)[] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 21 Sep 2019 18:54:15 -0000 On Sun, 22 Sep 2019 01:25:58 +0700 Victor Sudakov wrote: > Steve O'Hara-Smith wrote: > > > > > > Which is now the most convenient way to create multi-volume archives? > > > To fit an archive on a FAT32 flash drive, a volume size should not > > > exceed 4g. > > > > Gnu tar (in ports/packages as gtar) has support for multi-volume > > splitting (-M) which by default prompts for the next volume to be > > installed (so you could write direct to the flash drive) or can use a > > script to generate the next volume filename. I vaguely recall using it > > a long time ago. > > I'm even old enough to remember that BSD tar could do the same, and I > used this feature with magnetic tapes, but after the introduction of > libarchive, the BSD tar lost this ability. Indeed. > However, this understanding of multiple volumes is not convenient for > writing to a formatted flash drive. You can use -L and perhaps the --new-volume-script option and a script to make it convenient for most purposes, but the default prompt for a new volume approach should work fine - when you get the prompt unmount the drive and mount another one in the same place hit return and away you go. -- Steve O'Hara-Smith