From owner-freebsd-hackers@freebsd.org Tue Feb 5 18:46:05 2019 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id C244214C53FB for ; Tue, 5 Feb 2019 18:46:05 +0000 (UTC) (envelope-from george+freebsd@m5p.com) Received: from mailhost.m5p.com (mailhost.m5p.com [74.104.188.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "m5p.com", Issuer "Let's Encrypt Authority X3" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id B33EB8A4F9 for ; Tue, 5 Feb 2019 18:45:59 +0000 (UTC) (envelope-from george+freebsd@m5p.com) Received: from [10.100.0.31] (haymarket.m5p.com [10.100.0.31]) (authenticated bits=0) by mailhost.m5p.com (8.15.2/8.15.2) with ESMTPSA id x15Ijap3035880 (version=TLSv1.2 cipher=AES128-SHA bits=128 verify=NO) for ; Tue, 5 Feb 2019 13:45:52 -0500 (EST) (envelope-from george+freebsd@m5p.com) To: freebsd-hackers@freebsd.org References: <5fc87495-8fdc-c1f3-0b95-8609347794f0@m5p.com> <32330.1549288285@critter.freebsd.dk> <5e7f90d8-d4a6-9ae3-3e92-2abc3103c683@m5p.com> From: George Mitchell Openpgp: preference=signencrypt Autocrypt: addr=george+freebsd@m5p.com; 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FreeBSD amd64; rv:60.0) Gecko/20100101 Thunderbird/60.5.0 MIME-Version: 1.0 In-Reply-To: <5e7f90d8-d4a6-9ae3-3e92-2abc3103c683@m5p.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="vFm0ljvzvqQCoBXTboW14UjG3Kcorz81Y" X-Spam-Status: No, score=-1.0 required=10.0 tests=ALL_TRUSTED autolearn=unavailable autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on mattapan.m5p.com X-Rspamd-Queue-Id: B33EB8A4F9 X-Spamd-Bar: -------- Authentication-Results: mx1.freebsd.org; spf=pass (mx1.freebsd.org: domain of george@m5p.com designates 74.104.188.4 as permitted sender) smtp.mailfrom=george@m5p.com X-Spamd-Result: default: False [-8.43 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_TLS_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+a]; TO_MATCH_ENVRCPT_ALL(0.00)[]; HAS_ATTACHMENT(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; TO_DN_NONE(0.00)[]; MIME_GOOD(-0.20)[multipart/signed,multipart/mixed,text/plain]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; DMARC_NA(0.00)[m5p.com]; MX_GOOD(-0.01)[mailhost.m5p.com]; NEURAL_HAM_SHORT(-0.97)[-0.970,0]; IP_SCORE(-3.05)[ip: (-9.67), ipnet: 74.104.0.0/16(-4.83), asn: 701(-0.69), country: US(-0.07)]; SIGNED_PGP(-2.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:+]; ASN(0.00)[asn:701, ipnet:74.104.0.0/16, country:US]; TAGGED_FROM(0.00)[freebsd]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2] X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 05 Feb 2019 18:46:06 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --vFm0ljvzvqQCoBXTboW14UjG3Kcorz81Y Content-Type: multipart/mixed; boundary="KumFB4YJvvFLCUFVu6wiQmL1OyI1SsN39"; protected-headers="v1" From: George Mitchell To: freebsd-hackers@freebsd.org Message-ID: Subject: Re: Non-interactive multivolume restore References: <5fc87495-8fdc-c1f3-0b95-8609347794f0@m5p.com> <32330.1549288285@critter.freebsd.dk> <5e7f90d8-d4a6-9ae3-3e92-2abc3103c683@m5p.com> In-Reply-To: <5e7f90d8-d4a6-9ae3-3e92-2abc3103c683@m5p.com> --KumFB4YJvvFLCUFVu6wiQmL1OyI1SsN39 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 2/4/19 8:20 PM, George Mitchell wrote: > On 2/4/19 8:51 AM, Poul-Henning Kamp wrote: >> -------- >> In message , Wojciech = Puchar writes: >>>> files you want to restore, as opposed to additional dump volumes. >>>> >>>> I thought perhaps 'cat dumpvols... | restore -x -f -', but that >>>> gets confused at the beginning of the second volume. >>>> >>>> What's the right way to do this? -- George >>>> >>>> >>> look at -P option. >> >> I was just about to say: -P is there exactly for tape libraries etc. >> >=20 > Thanks to all who pointed this out to me! I think I will propose a > documentation patch to give an example of this usage, as I had to go > poking into the code to see exactly how this works. But first I'm > verifying that my new understanding is correct. -- George >=20 This does NOT work the way I expected. I created links to the volumes of my dump named dump1, dump2, ... dumpN. Then I ran this command: restore -x -s 1 -P 'cat ../dump$RESTORE_VOLUME' Surprise number one: despite the "-s 1" option, the program asked me: If you are extracting just a few files, start with the last volume and work towards the first; restore can quickly skip tapes that have no further files to extract. Otherwise, begin with volume 1. Specify next volume #: So I answered "1" and got my next surprise. Before continuing from volume 1 to volume 2, this appeared: Mount tape volume 2 Enter ``none'' if there are no more tapes otherwise enter tape name (default: cat ../dump$RESTORE_VOLUME) I pressed enter. A similar dialog transpired at the end of each succeeding volume of the dump. The good news is that the restore succeeded and I had a lot less typing to do. But this doesn't meet my definition of non-interactive. What did I miss this time? --KumFB4YJvvFLCUFVu6wiQmL1OyI1SsN39-- --vFm0ljvzvqQCoBXTboW14UjG3Kcorz81Y Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEENdM4ZHktsJW5kKZXwRES3m+p4fkFAlxZ2dAACgkQwRES3m+p 4fkSIw//WcOeUDb33rbIDAlE8GBsgFAQWbxDyPB6oo/y3Jz1MGCmyMaHJ2Jo3CK6 xjvXNsP9LnMc7SEOeCXm49NLwNYV4Dm5tTKf1psxFz3JJ7hrRMMB2XqNcA9rpXAe LX5Zk7j09y3ExcmUwNp1FANqwcpKxtAmFXwGdmjO4XyKTWDCQ5tOWTj1Kz0DL7Zs jE89LdwcHrZTzC5Kw7V6dBBr4R8+xDv/rMv6vxgMxny2ZAtCAnhkRoWzymVX2gam phnVaTbPTQej3fFo1I+aSv4Pup+Sk8QwLDDvbcC/290CbqXXOIxdSo7drU2PiPbu MtTD3IY3XU9zevwHc4cDnEwztpMuz7+Z4M4l9XejnOMFZ32BPMYA6CzRHTb2YheZ anUyzOJbgZP5XuKi4fEb85W5R8MhHeG16yT9LQQdzh+VeTmZ2QZLLa/j35IYgPSz aXjZTeCt9ZvL3oj8MjA8rjVCls2yxFfXwBmj+SulwjgQFSU6NRuFQvbKhetwVBoH vR/VjTM7OdM7AWW56xR4ByJGOt9xVE6SwBz2I5PYgPd/TFzAYqq4NzIbBCO6zVN9 j+8T/U1KV7QoEBQdpI+Dm6HqziMPcJ2qnMNgumw7q8l7ILinWXkosUTWML51Ui8K qllk4OVYNInhTYEnpGU++cMwA21vluQI48DzowdpYJec91pUuQQ= =utRQ -----END PGP SIGNATURE----- --vFm0ljvzvqQCoBXTboW14UjG3Kcorz81Y--