Date: Sat, 27 Aug 2005 12:31:11 +0200 From: Emanuel Strobl <Emanuel.strobl@gmx.net> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: freebsd-current@freebsd.org, freebsd-questions@freebsd.org Subject: Re: cpio and tar are loosing flags (and a panic message without trace) Message-ID: <200508271231.34470@harrymail> In-Reply-To: <200508270458.j7R4wI5f076140@apollo.backplane.com> References: <200508262004.54637@harrymail> <200508270523.50609@harrymail> <200508270458.j7R4wI5f076140@apollo.backplane.com>
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--nextPart1588043.I67yfi4mi7 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Am Samstag, 27. August 2005 06:58 CEST schrieb Matthew Dillon: > :Thank you, I know cpdup but I haven't known that it's flags aware! > :Unfortunately I need to write to a raw device, I guess there's no way > : for=3D20 cpdup without a filesystem... > : > :I guess cpio and tar really should take care about flags. Am I wrong? > : > :Thanks, > : > :=3D2DHarry > > cpio won't do it, tar won't do it, dump only does whole partitions, > cpdup is not an archiver. Hmm. > > I can think of two possibilities. First, use a MFS or VN block > device, create a filesystem, and use cpdup, then gzip the file > representing the backing store. Since the extra space in the filesystem > will contain zeros (you should make sure it does, that is), it should > compress pretty well. Second, use cpio and then do a separate 'find' or > 'ls' or something to get the chflags info and write a script that > restores the flags after unpacking. > > They are both pretty narley solutions. > > Hmm.. wait a sec... I just thought up of another possibility... take > the tar or cpio source code and modify it to also save and restore > the chflags data. It won't be a 'standard' utility any more, but it > WILL work for your needs. Call it by another name so there's no > confusion. That might be your best bet, actually. Right, and you can be sure, I had that done already if I spoke c. But if I understand you correctly, it is intended that cpio doesn't hanlde= =20 file flags? And (bsb)tar too? Then what are flags good for if no=20 application makes use of them? =46or now I think I have to be happy with my script solution, at least it=20 works. Thanks, =2Dharry > > -Matt --nextPart1588043.I67yfi4mi7 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQBDEEEGBylq0S4AzzwRAk9jAJ9BtF55VtpB39Ac3Z0fTkzq9Nv8HwCeKxZY tIuf0zf92rpNIyaZYgUlV4A= =QCBs -----END PGP SIGNATURE----- --nextPart1588043.I67yfi4mi7--
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