Re: Copying a file system w/ tar - symbolic links not copied right - More info
Hi all... Ok... More info for the puzzle. I'm trying to move a file system from one disk to another, and when I do this: tar cf - /source/* | ( cd /destination tar xfv - ) It copies all the files, but the symbolic links are copied as files of 0 length, rather than re-established as links. BUT When I just: tar -cf file.tar /source/* And then: tar -xf file.tar Then the symbolic links are made correctly Any reason why this should work and not the piped version for 'all in one' copying? If it's an actual filesystem why not use dump/restore? Otherwise I'm not sure, but you might also want to add in -pS to handle permissions and sparse files as well... -philip ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
RE: Copying a file system w/ tar - symbolic links not copied right - More info
Well... I'm moving it from one file system to another of different sizes, that's the main reason. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Philip Hallstrom Sent: Thursday, May 11, 2006 10:35 AM To: Don O'Neil Cc: freebsd-questions@freebsd.org Subject: Re: Copying a file system w/ tar - symbolic links not copied right - More info Hi all... Ok... More info for the puzzle. I'm trying to move a file system from one disk to another, and when I do this: tar cf - /source/* | ( cd /destination tar xfv - ) It copies all the files, but the symbolic links are copied as files of 0 length, rather than re-established as links. BUT When I just: tar -cf file.tar /source/* And then: tar -xf file.tar Then the symbolic links are made correctly Any reason why this should work and not the piped version for 'all in one' copying? If it's an actual filesystem why not use dump/restore? Otherwise I'm not sure, but you might also want to add in -pS to handle permissions and sparse files as well... -philip ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Copying a file system w/ tar - symbolic links not copied right
Hi all... Ok... More info for the puzzle. I'm trying to move a file system from one disk to another, and when I do this: tar cf - /source/* | ( cd /destination tar xfv - ) It copies all the files, but the symbolic links are copied as files of 0 length, rather than re-established as links. BUT When I just: tar -cf file.tar /source/* And then: tar -xf file.tar Then the symbolic links are made correctly Any reason why this should work and not the piped version for 'all in one' copying? If it's an actual filesystem why not use dump/restore? Ditto on dump/restore. It is the clean and reliable way to do it. The complete filesystem will be recreated in the new location with all links, permission, etc intact. jerry Otherwise I'm not sure, but you might also want to add in -pS to handle permissions and sparse files as well... -philip ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Copying a file system w/ tar - symbolic links not copied right.
Olivier Nicole wrote: I'm trying to move a file system from one disk to another, and when I do this: I think that the way to go is: tar cf - /source/* | ( cd /destination tar xfvBp - ) Note the Bp at the end of the extract tar. olivier Is that for BSD tar, or gtar (GNU)? We still haven't decided which is offering the problem, and I don't find -B described in bsdtar(1), although I can see why you'd want it in gtar, perhaps. Nonetheless, the tests I made with both tars didn't seem to have this problem. Can Don confirm whether this only occurs if /source/ is a filesystem mount point? (Also, which tar are you using? KDK -- Computer programs expand so as to fill the core available. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
RE: Copying a file system w/ tar - symbolic links not copied right.
I've tried both the BSD and GNU tars, I get the same results on both. It's very strange. When I add the B option, no different I used: tar cf - /array01/* | ( cd /mnt/disk01 tar xfvBp - ) Maybe this is something specific to 4.11? Here's what happens: Source file: lrwxrwxrwx1 root wheel21 Feb 19 03:05 apache.log - /var/shc/apache/logs/ Destination file created on the tar backup: -- 1 root wheel 0 May 11 11:02 apache.log Some have suggested using dump/restore. The problem with dump/restore is that I can't do it across the network and the file systems need to match. The whole point is to move these files/directories from one server to another to a volume with a LOT more space on a RAID array. -Original Message- From: Kevin Kinsey [mailto:[EMAIL PROTECTED] Sent: Thursday, May 11, 2006 10:54 AM To: Olivier Nicole Cc: [EMAIL PROTECTED]; freebsd-questions@freebsd.org Subject: Re: Copying a file system w/ tar - symbolic links not copied right. Olivier Nicole wrote: I'm trying to move a file system from one disk to another, and when I do this: I think that the way to go is: tar cf - /source/* | ( cd /destination tar xfvBp - ) Note the Bp at the end of the extract tar. olivier Is that for BSD tar, or gtar (GNU)? We still haven't decided which is offering the problem, and I don't find -B described in bsdtar(1), although I can see why you'd want it in gtar, perhaps. Nonetheless, the tests I made with both tars didn't seem to have this problem. Can Don confirm whether this only occurs if /source/ is a filesystem mount point? (Also, which tar are you using? ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
RE: Copying a file system w/ tar - symbolic links not copied right - More info
Well... I'm moving it from one file system to another of different sizes, that's the main reason. Dump won't care about that... dd would, but dd isn't right for this anyway... I'd give dump a try. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Philip Hallstrom Sent: Thursday, May 11, 2006 10:35 AM To: Don O'Neil Cc: freebsd-questions@freebsd.org Subject: Re: Copying a file system w/ tar - symbolic links not copied right - More info Hi all... Ok... More info for the puzzle. I'm trying to move a file system from one disk to another, and when I do this: tar cf - /source/* | ( cd /destination tar xfv - ) It copies all the files, but the symbolic links are copied as files of 0 length, rather than re-established as links. BUT When I just: tar -cf file.tar /source/* And then: tar -xf file.tar Then the symbolic links are made correctly Any reason why this should work and not the piped version for 'all in one' copying? If it's an actual filesystem why not use dump/restore? Otherwise I'm not sure, but you might also want to add in -pS to handle permissions and sparse files as well... -philip ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Copying a file system w/ tar - symbolic links not copied right.
I've tried both the BSD and GNU tars, I get the same results on both. It's very strange. When I add the B option, no different I used: tar cf - /array01/* | ( cd /mnt/disk01 tar xfvBp - ) Maybe this is something specific to 4.11? Here's what happens: Source file: lrwxrwxrwx1 root wheel21 Feb 19 03:05 apache.log - /var/shc/apache/logs/ Destination file created on the tar backup: -- 1 root wheel 0 May 11 11:02 apache.log Some have suggested using dump/restore. The problem with dump/restore is that I can't do it across the network and the file systems need to match. The whole point is to move these files/directories from one server to another to a volume with a LOT more space on a RAID array. I used to do it over the net regularly with dump/restore. Just take advantage of the pipe ability.Since the other system has so much room, just pipe the dump file over there and unroll it with restore on the other machine as you please or just leave it in a dump file if you don't want. jerry ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
RE: Copying a file system w/ tar - symbolic links not copied right - More info
I will... Thanks to all for helping... Still weird what's happening though! -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Philip Hallstrom Sent: Thursday, May 11, 2006 12:29 PM To: Don O'Neil Cc: freebsd-questions@freebsd.org Subject: RE: Copying a file system w/ tar - symbolic links not copied right - More info Well... I'm moving it from one file system to another of different sizes, that's the main reason. Dump won't care about that... dd would, but dd isn't right for this anyway... I'd give dump a try. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Philip Hallstrom Sent: Thursday, May 11, 2006 10:35 AM To: Don O'Neil Cc: freebsd-questions@freebsd.org Subject: Re: Copying a file system w/ tar - symbolic links not copied right - More info Hi all... Ok... More info for the puzzle. I'm trying to move a file system from one disk to another, and when I do this: tar cf - /source/* | ( cd /destination tar xfv - ) It copies all the files, but the symbolic links are copied as files of 0 length, rather than re-established as links. BUT When I just: tar -cf file.tar /source/* And then: tar -xf file.tar Then the symbolic links are made correctly Any reason why this should work and not the piped version for 'all in one' copying? If it's an actual filesystem why not use dump/restore? Otherwise I'm not sure, but you might also want to add in -pS to handle permissions and sparse files as well... -philip ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Copying a file system w/ tar - symbolic links not copied right.
# man tar specifically, the -L option On 5/10/06, Don O'Neil [EMAIL PROTECTED] wrote: Hi all... I'm trying to move a file system from one disk to another, and when I do this: tar cf - /source/* | ( cd /destination tar xfv - ) It copies all the files, but the symbolic links are copied as files of 0 length, rather than re-established as links. What am I doing wrong here, or is my tar broken? ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
RE: Copying a file system w/ tar - symbolic links not copied right.
My man says: -L number --tape-length numberChange tapes after writing number * 1024 bytes. Nothing about symbolic links Now there is an option --unlink-first and --dereference... Both of which don't copy the links, but unlink or copy the actual source file. Don -Original Message- From: Andy Greenwood [mailto:[EMAIL PROTECTED] Sent: Wednesday, May 10, 2006 6:24 PM To: Don O'Neil Cc: freebsd-questions@freebsd.org Subject: Re: Copying a file system w/ tar - symbolic links not copied right. # man tar specifically, the -L option On 5/10/06, Don O'Neil [EMAIL PROTECTED] wrote: Hi all... I'm trying to move a file system from one disk to another, and when I do this: tar cf - /source/* | ( cd /destination tar xfv - ) It copies all the files, but the symbolic links are copied as files of 0 length, rather than re-established as links. What am I doing wrong here, or is my tar broken? ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
RE: Copying a file system w/ tar - symbolic links not copied right.
-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Andy Greenwood Sent: Thursday, 11 May 2006 11:24 AM To: Don O'Neil Cc: freebsd-questions@freebsd.org Subject: Re: Copying a file system w/ tar - symbolic links not copied right. # man tar specifically, the -L option On 5/10/06, Don O'Neil [EMAIL PROTECTED] wrote: Hi all... I'm trying to move a file system from one disk to another, and when I do this: tar cf - /source/* | ( cd /destination tar xfv - ) It copies all the files, but the symbolic links are copied as files of 0 length, rather than re-established as links. What am I doing wrong here, or is my tar broken? to preserve symlinks you need to use cpio specifically the -p and -l options man cpio It is a bit of a read Murray Taylor Special Projects Engineer Bytecraft Systems P: +61 3 8710 2555 F: +61 3 8710 2599 D: +61 3 9238 4275 E: [EMAIL PROTECTED] -- Any intelligent fool can make things bigger and more complex... It takes a touch of genius - and a lot of courage to move in the opposite direction. Albert Einstein -- --- The information transmitted in this e-mail is for the exclusive use of the intended addressee and may contain confidential and/or privileged material. Any review, re-transmission, dissemination or other use of it, or the taking of any action in reliance upon this information by persons and/or entities other than the intended recipient is prohibited. If you received this in error, please inform the sender and/or addressee immediately and delete the material. E-mails may not be secure, may contain computer viruses and may be corrupted in transmission. Please carefully check this e-mail (and any attachment) accordingly. No warranties are given and no liability is accepted for any loss or damage caused by such matters. --- ***This Email has been scanned for Viruses by MailMarshal.*** ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Copying a file system w/ tar - symbolic links not copied right.
On 5/10/06, Don O'Neil [EMAIL PROTECTED] wrote: tar cf - /source/* | ( cd /destination tar xfv - ) It copies all the files, but the symbolic links are copied as files of 0 length, rather than re-established as links. What am I doing wrong here, or is my tar broken? From: Andy Greenwood [mailto:[EMAIL PROTECTED] Sent: Wednesday, May 10, 2006 6:24 PM To: Don O'Neil # man tar specifically, the -L option Don O'Neil wrote: My man says: -L number --tape-length numberChange tapes after writing number * 1024 bytes. Nothing about symbolic links Now there is an option --unlink-first and --dereference... Both of which don't copy the links, but unlink or copy the actual source file. Don And again: What am I doing wrong here, or is my tar broken? Heh, heh, could be. Andy is referring to BSDtar, which is tar(1) on later releases, and your -L option is from GNUtar, which is tar(1) on, IIRC, 4.X and elder, and is now available in ports as gtar. As for what's really the problem, I can't say as I can tell. On my 6.X box, everything works as expected. For fun, I shelled into a 4.11 box, and everything works as expected, both my tests and your example. Maybe your tar *is* broken. Or, more likely, we're both a tad dense ATM. Kevin Kinsey -- What foods these morsels be! ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Copying a file system w/ tar - symbolic links not copied right.
In the last episode (May 10), Don O'Neil said: Hi all... I'm trying to move a file system from one disk to another, and when I do this: tar cf - /source/* | ( cd /destination tar xfv - ) It copies all the files, but the symbolic links are copied as files of 0 length, rather than re-established as links. What am I doing wrong here, or is my tar broken? Sounds like your tar's broken. ([EMAIL PROTECTED]) /tmp/z ln -s testing link ([EMAIL PROTECTED]) /tmp/z md bsdtar gnutar ([EMAIL PROTECTED]) /tmp/z bsdtar cf - link | ( cd bsdtar bsdtar xvf - ) x link ([EMAIL PROTECTED]) /tmp/z gtar cf - link | ( cd gnutar gtar xvf - ) link ([EMAIL PROTECTED]) /tmp/z ls -l bsdtar gnutar bsdtar: total 4 drwxr-xr-x 2 dan wheel 512 May 10 21:19 ./ drwxr-xr-x 4 dan wheel 512 May 10 21:18 ../ lrwxr-xr-x 1 dan wheel7 May 10 21:18 link@ - testing gnutar: total 4 drwxr-xr-x 2 dan wheel 512 May 10 21:19 ./ drwxr-xr-x 4 dan wheel 512 May 10 21:18 ../ lrwxr-xr-x 1 dan wheel7 May 10 21:19 link@ - testing ([EMAIL PROTECTED]) /tmp/z bsdtar --version bsdtar 1.01.020, libarchive 1.02.033 Copyright (C) 2003-2004 Tim Kientzle ([EMAIL PROTECTED]) /tmp/z gtar --version tar (GNU tar) 1.13.25 -- Dan Nelson [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Copying a file system w/ tar - symbolic links not copied right.
I'm trying to move a file system from one disk to another, and when I do this: I think that the way to go is: tar cf - /source/* | ( cd /destination tar xfvBp - ) Note the Bp at the end of the extract tar. olivier ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
