/home is not NFS mounted and the directories are not transient (they are
the actual home dirs of individual users). runtar is seduid root. I tryed
to run the gtar command from the log file manually as root, and found that
it ONLY works when I run it from /home:
root@rozi$ cd /home/
root@rozi$ /opt/sfw/bin/gtar --create --file /dev/null --directory /home
--one-file-system --listed-incremental
/usr/local/var/amanda/gnutar-lists/rozi.cab.u-szeged.hu_home_h0_0.new
--sparse --ignore-failed-read --totals --files-from
/tmp/amanda/sendsize._home__h0.20031113235902.include 2>&1|less
But then how is it possible that sendsize (or whatever other program) can
collect the filenames in
/tmp/amanda/sendsize._home__h0.20031113235902.include but gtar fails
unless started from /home (note that the --directory /home is present on
the command line which should cd to /home....). Any idea? How should I
specify the include/exclude directives in the disklist entries?
Regards,
Zoltan
__________________________________________________________________
http://www.inf.u-szeged.hu/~kato/ -- research in computer vision
http://www.cameradigita.com/ -- photography (online gallery)
__________________________________________________________________
On Fri, 14 Nov 2003, Paul Bijnens wrote:
> Zoltan Kato wrote:
>
> > Still doesn't work. I've split the /home partition into several pieces as
> > recommended in an earlier message (my disklist entries are included at
> > the end). Since I havent' received the usual email report from amanda
> > (why??), I went to /tmp/amanda to see the logs. It looks like sendsize
> > is run with non-root privileges hence it cannot stat/read individual
> > home directories (quite normal as they are restricted to the owner). This
> > is what I found:
> >
> > sendsize: debug 1 pid 5628 ruid 103 euid 103: start at Thu Nov 13 23:59:01
> > 2003
> ...
> > sendsize[5630]: time 0.041: getting size via gnutar for /etc level 0
> ...
> > sendsize[5630]: estimate time for /etc level 0: 0.897
> > sendsize[5630]: estimate size for /etc level 0: 3650 KB
>
> estimate for level 0 for /etc succeeded fine in less then a second.
>
> ...
> > sendsize[5630]: estimate time for /etc level 1: 0.050
> > sendsize[5630]: estimate size for /etc level 1: 120 KB
>
> the same for level 1 even faster.
>
> Next amanda tries /home_h0:
>
> ...
> > sendsize[5633]: time 1.051: calculating for amname '/home_h0', dirname
> > '/home', spindle -1
> > sendsize[5633]: time 1.051: getting size via gnutar for /home_h0 level 0
>
> The runtar is the program that needs to be suid-root. Verify this
> please. /home isn't an nfs-mount by accident? On a normal nfs-mounted
> directory, root on the cleint becomes "nobody" on the server.
> You have to specify special mount options on the nfs-server to get
> root==root. See the "no_root_squash" option in the exports file.
>
>
> > sendsize[5633]: time 1.139: spawning /usr/local/libexec/runtar in pipeline
> > sendsize[5633]: argument list: /opt/sfw/bin/gtar --create --file /dev/null
> > --directory /home --one-file-system --listed-incremental
> > /usr/local/var/amanda/gnutar-lists/rozi.cab.u-szeged.hu_home_h0_0.new
> > --sparse --ignore-failed-read --totals --files-from
> > /tmp/amanda/sendsize._home__h0.20031113235902.include
>
> Try to execute the above command line interactively, as root.
> Does that work?
>
> > sendsize[5633]: time 1.172: /opt/sfw/bin/gtar: Cannot stat ./h0: No such
> > file or directory
> > sendsize[5633]: time 1.172: /opt/sfw/bin/gtar: Cannot stat ./h000001: No
> > such file or directory
> > sendsize[5633]: time 1.173: /opt/sfw/bin/gtar: Cannot stat ./h000002: No
> > such file or directory
> > sendsize[5633]: time 1.174: /opt/sfw/bin/gtar: Cannot stat ./h030000: No
> > such file or directory
> > sendsize[5633]: time 1.174: /opt/sfw/bin/gtar: Cannot stat ./h039963: No
> > such file or directory
> > sendsize[5633]: time 1.175: /opt/sfw/bin/gtar: Cannot stat ./h039966: No
> > such file or directory
> >
> > ....... (similar messages repeated) .....
>
> Do these directories/files actually exist? Or are they shortlived,
> and between the time amanda expanded the "./h[0]*" in the file
> /tmp/amanda/sendsize._home__h0.20031113235902.include and the time
> that gtar was started. It's only a second (1.172 sec to be precise),
> but these days computers can get really fast.
>
> Also the message is "No such file or directory" instead of "Permission
> denied". Usually I believe those error messages in Unix.
>
>
> ...
> > My disklist:
> >
> > rozi.cab.u-szeged.hu /etc root-tar
> > rozi.cab.u-szeged.hu /home_h0 /home { # h0*
> > user-tar
> > include "./h[0]*"
> > }
> ...
> > rozi.cab.u-szeged.hu /home_rest /home { # the rest
> > user-tar
> > exclude "./h[0-9]*"
> > }
>
>
> --
> Paul Bijnens, Xplanation Tel +32 16 397.511
> Technologielaan 21 bus 2, B-3001 Leuven, BELGIUM Fax +32 16 397.512
> http://www.xplanation.com/ email: Paul.Bijnens AT xplanation DOT com
> ***********************************************************************
> * I think I've got the hang of it now: exit, ^D, ^C, ^\, ^Z, ^Q, F6, *
> * quit, ZZ, :q, :q!, M-Z, ^X^C, logoff, logout, close, bye, /bye, *
> * stop, end, F3, ~., ^]c, +++ ATH, disconnect, halt, abort, hangup, *
> * PF4, F20, ^X^X, :D::D, KJOB, F14-f-e, F8-e, kill -1 $$, shutdown, *
> * kill -9 1, Alt-F4, Ctrl-Alt-Del, AltGr-NumLock, Stop-A, ... *
> * ... "Are you sure?" ... YES ... Phew ... I'm out *
> ***********************************************************************
>
>
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