Hi,
for some months bacula trunk code has provided plugins; I was (am) especially
interested in the fd plugins which let me "dump" arbitrary types of data to
the backup, including database dumps.
Currently, only a single plugin, bpipe, is included in bacula; it is exactly
what I need.
When a fileset includes multiple "plugin" lines, restoring these dumps results
in various interesting bugs/erros.
My test setup:
-----------------------------------------------------------------------
3 "output/backup scripts":
~~~~~~~ out 1 ~~~~~~
#!/bin/bash
echo 'hello world 1'
~~~~~~~~~~~~~~~~~~~~~
(out2/3 identical, but saying "hello world 2/3" respectively)
Another 3 "input/restore scripts":
~~~~~~ in1 ~~~~~~~~~~~
#!/bin/bash
date > /tmp/tstfile1
cat - > /tmp/outputfile1
~~~~~~~~~~~~~~~~~~~~~~~
A fileset with these 3 pairs:
FileSet {
Name = "testset"
Include {
Options {
signature = MD5
noatime = yes
aclsupport = yes
}
File="/path/to/out1"
plugin="bpipe:myname1:/path/to/out1:__RESTORE_LOCATION__=%w /path/to/in1"
plugin="bpipe:myname2:/path/to/out2:__RESTORE_LOCATION__=%w /path/to/in2"
plugin="bpipe:myname3:/path/to/out3:__RESTORE_LOCATION__=%w /path/to/in3"
}
}
-----------------------------------------------------------------------
Backing up this file set, I can find the strings "hello world 1/2/3" in the
resulting volume file; they are preceded by what seems to be a sensible
header that includes the "plugin" statement.
Restoring now becomes a problem, though:
(1) Restoring the file, and all three pipe plugins (does not work)
==================================================
No error messages, no crashes.
/tmp/outputfile1 is empty (0 bytes)
/tmp/outputfile2 is empty (0 bytes)
/tmp/outputfile3 is restored correctly and now includes the string "hello
world 3"
/tmp/tstfile{123} exist and contain a current date
/path/to/out1 exists, and contains the correct data
(2) Restoring no file, all three pipes (does not work)
======================================
Error messages:
29-Sep 14:48 bilbobox4-fd JobId 2485: Error: restore.c:294 Logic error: output
file should be open
29-Sep 14:48 bilbobox4-fd JobId 2485: Error: restore.c:294 Logic error: output
file should be open
/tmp/outputfile{12} are empty
/tmp/outputfile3 is restored correctly
/tmp/tstfile{123} exist and contain a current date
(3) Restoring only "myname1" (DOES work!)
============================
No error messages, no crashes.
/tmp/outputfile1 is restored correctly
/tmp/tstfile1 contains a current date
Everything is good!
(4) Restoring "myname1" and "myname2" (does not work)
=====================================
29-Sep 14:55 bilbobox4-fd JobId 2490: Error: restore.c:294 Logic error: output
file should be open
/tmp/outputfile1 is empty
/tmp/outputfile2 is restored correctly
/tmp/tstfile{12} are fine
(4) Restoring only "myname2" (or "myname3") (does not work)
===========================================
FD Crashes with seg fault:
bilbobox4-fd: restore.c:667-2488 restore stream_plugin_name=0 0
Kaboom! bacula-fd, bilbobox4-fd got signal 11 - Segmentation violation.
Attempting traceback.
Kaboom!
exepath=/data/home/b/bastian/AppKit/common/misc/bacula/bacula-2.5-20080926svn/src/filed
Calling:
/data/home/b/bastian/AppKit/common/misc/bacula/bacula-2.5-20080926svn/src/filed/btraceback
/data/home/b/bastian/AppKit/common/misc/bacula/bacula-2.5-20080926svn/src/filed/bacula-fd
6778
Restore job fails with
29-Sep 14:59 bilbobox4-dir JobId 2491: Fatal error: Network error with FD
during Restore: ERR=No data available
29-Sep 14:59 bilbobox4-dir JobId 2491: Fatal error: No Job status returned
from FD.
/tmp/tstfile2 and /tmp/outputfile2 are NOT created (not even 0 bytes).
-----------------------------------------------------------------------
I suspect that the problem is comparable to the ACL restore bugs reported some
days ago: While there is a stream restored, there is no "regular" file name
associated with it, and similar: the job crashes.
Any idea?
Thx & best regards
Bastian
--
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