cpio and tar are loosing flags (and a panic message without trace)

Lonnie VanZandt lonnie.vanzandt at ngc.com
Fri Aug 26 18:39:26 GMT 2005


How about rsync? (There is a ports version available)

see man rsync and the -a flag

On Friday 26 August 2005 12:04 pm, Emanuel Strobl wrote:
> Hello,
>
> hmm, once again me. And again with a probably not so common problem.
> I need to replicate files, exactly like they are!
> I thought cpio was the deal, but no way, I tried several -H formats but
> that hasn't changed anything. As soon as a file gets restored the flag
> arch is reset, same with nodump.
> Then I remember Tim Kienzles great work for bsdtar and all the ACL stuff,
> but unfortunately a cvPPzf <> xvpPfz also looses the arch flag :(
> My temporary solution is the following, but I don't liek it:
>
> for n in `/usr/bin/cpio -idmuv --quiet < ${varmfs_bufferdev} 2>&1`
>   do /bin/chflags arch $n
> done
>
> Dump is no alternative since I have to archive just selected files, cpio's
> behaviour is the one I like most for my needs.
>
> Any suggestions?
>
> Thanks,
>
> -Harry
>
> P.S.: Here's a little panic I had today on my embedded system (RELENG_6
> from today!), no debug kernel, too less memory, but if anybody's
> interested, here's the message:
>
> fatal trap 12: page fault while in kernel mode
> fault virtual address   = 0x0
> fault code              = supervisor write, page not present
> instruction pointer     = 0x20:0xc04d7170
> stack pointer           = 0x28:0xc5ddb7e4
> frame pointer           = 0x28:0xc5ddb7f0
> code segment            = base 0x0, limit 0xfffff, type 0x1b
>                         = DPL 0, pres 1, def32 1, gran 1
> processor eflags        = interrupt enabled, resume, IOPL = 0
> current process         = 526 (gunzip)
> trap number             = 12



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