Olivier,
>From the logs and the email, it seems that the dump fails at
approximatively
70% of completion.
The tape is correct (I ran amcheck successfully prior to the dump) and
no
other tool is trying to access the tape device.
Not that I am trying to backup a filesystem larger than the tape
capacity
(8Gbytes partition on a DDS2 DAT tape of 4Gbytes).
I was hopping that compression would do the trick as I currently only
have
6Gbytes of data on the partition....
I aslo enabled the "manual" tape changer, thinking I could have the full
backup on two tapes.
In fact, I seem to have problems understanding the phylosophy behind
Amanda
...
Reading some FAQ and emails I got the impression that Amanda was
"spreading"
the full backup on the dumpcycle, so I was hoping not to have to manualy
change tapes anymore due to the size of the filesystem, I must have
misunderstood the emails!
I then hoped I would just have to go manualy through the very first
amdump run, changing tape only once, the following fulldump, would be
spread-out ... that too seems to be wrong.
>From the documentation (amanda manpage):
"Also note that as of this release, Amanda does not
support true tape overflow. When it reaches the
end of one tape, the backup image Amanda was pro�
cessing starts over again on the next tape."
Does it mean that if an entry in disklist requires 6Gbyte of stotage and
the
tape is only a 4Gbyte, then this entry cannot be dumped ? Even with the
"manual" tape changer activated!
But hen the MULTITAPE documentation says:
"- a single dump file can straddle two tapes"
So who/what should I believe ?
Is the only solution to my problem something like the following:
- switch to GNUTAR as dump program, in order to allow directory dumps
- split the 8Gbyte file system into directories of size less than the
tape
size (<3Gbyte in my case)
- declare all these directories separately in the "disklist"
configuration
file :
hostname /usr/directory1 comp-user-tar
hostname /usr/directory2 comp-user-tar
...
- enable the "manual" tape changer, only for the first dumpcycle, in
order
to do the full dump of each disklist entry
- disable the "manual" tape changer option after the first fulldump,
later
fulldumps will automatically be split into a one tape dump by Amanda, as
it
will detect that the device cannot support more than 4Gbyte per run ...
Is this the best solution ? Is there another one ?
Thanks for helping me sort this configuration out. I realy need this
data to
be backup!
Pat.
PS: next step is to provide a backup mechanism for Windows user through
Samba ... !!
Nicole wrote:
> HI,
>
> >Here is the email I get back:
> >These dumps were to tape DailySet104.
> >*** A TAPE ERROR OCCURRED: [[cannot overwrite active tape DailySet104]].
> >Some dumps may have been left in the holding disk.
> >Run amflush to flush them to tape.
> >The next 2 tapes Amanda expects to used are: a new tape, a new tape.
>
> Have you look into /tmp/amanda files? There must be one giving more
> specific reasons about why it failed.
>
> Either the tape is not the one Amanda is waiting for, it is write
> protected, another software is using the tape drive...
>
> Best regards,
>
> Olivier
