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From: Eugene Grosbein <egrosbein@rdtc.ru>
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To: Mark Saad <nonesuch@longcount.org>
Subject: Re: Release ISO images have broken RockRidge data
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09.04.2013 21:58, Mark Saad пишет:

>> While not the same you can always do this
>>
>> mdconfig -a -t vnode -f yourfreebsd-version.iso
>>
>> mount -t cd9660 /dev/md0 /cdrom
>>
>> Then use pax, cpio , cp, rsync etc to copy the data off the image .

This way breaks hardlinks, so /rescue expands to 690M instead of 5M.

>> Also if memory serves me right libarchive may be able to unpack an iso much like a tar or cpio archive . Double check that .
> Also for what its worth, tar does work at extracting an iso as well

bsdtar/libarchive fails to expand these images correctly do to its own bugs:

# ktrace -i tar xf ../FreeBSD-8.4-BETA1-amd64-livefs.iso 
usr/bin/make: Can't create 'usr/bin/make'
usr/bin/pic: Can't create 'usr/bin/pic'
usr/bin/post-grohtml: Can't create 'usr/bin/post-grohtml'
usr/include/_semaphore.h: Can't create 'usr/include/_semaphore.h'
usr/lib/libarchive.so.5: Can't create 'usr/lib/libarchive.so.5'
^C
# kdump | grep -B 12 "'usr/bin/make'"
 10247 bsdtar   CALL  link(0x284eff20,0x284c6180)
 10247 bsdtar   NAMI  "usr/bin/mailq"
 10247 bsdtar   NAMI  "usr/bin/make"
 10247 bsdtar   RET   link -1 errno 18 Cross-device link
 10247 bsdtar   CALL  umask(S_IWGRP|S_IWOTH)
 10247 bsdtar   RET   umask 0
 10247 bsdtar   CALL  write(0x2,0x7fbfe788,0xc)
 10247 bsdtar   GIO   fd 2 wrote 12 bytes
       "usr/bin/make"
 10247 bsdtar   RET   write 12/0xc
 10247 bsdtar   CALL  write(0x2,0x7fbfe788,0x1d)
 10247 bsdtar   GIO   fd 2 wrote 29 bytes
       ": Can't create 'usr/bin/make'"

> So , what issues does this cause ? Have your filed a pr with FreeBSD or NetBSD ?

Not yet.