Hello Jonas
That depends on whether you need to be able to actually access the data that's
still on the tape. Allowing overwrites or even erasing the tape and
relabelling is the easiest way but results in loss of the data on the tape.
You may be able to carefully use the Unix dd and mt commands to copy the data
into the new block record length but I wouldn't trust it since the tar would
also have done it's own blocking, dd and mt can probably fix the label but you
would probably have to dd to a tar to another tar to a dd in order to convert
the actual data (if it's multiplexed, this could be very difficult). At this
site, by the time I was brought in to take over their Netbackup setup, the tapes
in the old block format had basically expired so I just erased and relabelled.
Regards,
John I Wang
Sr. Systems Engineer
Steverson Information Professionals
---
Enron Networks
Enron Building room 3427e
ph (713) 345-4888
cell (832) 493-1263
fax (713) 646-8462
pg pagejwang AT skytel DOT com or 1-877-390-4155
|--------+----------------------------->
| | jonas.blaberg@celln|
| | etwork.com |
| | |
| | 08/16/01 04:31 AM |
| | |
|--------+----------------------------->
>---------------------------------------------------------------------------|
| |
| To: veritas-bu AT mailman.eng.auburn DOT edu
|
| cc: (bcc: John Wang/Contractor/Enron Communications) |
| Subject: [Veritas-bu] problem with wrong buffer size |
>---------------------------------------------------------------------------|
hello!
Due to some reasons (no use mentioning the reasons now), we hade to increase the
buffer size a month ago.
when we are trying to reuse our tapes that used the old buffer size, the tape is
frozen and not usable. I get the following excerpts from the bptm log:
10:23:24 [25072] <2> io_open: file
/usr/openv/netbackup/db/media/tpreq/000006 successfully opened
10:23:24 [25072] <2> write_backup: media id 000006 mounted on drive
index 0, drivepath /dev/rmt/0cbn, drivename SEAGATEULTRIUM06242-XXX0
10:23:24 [25072] <2> io_read_media_header: drive index 0, reading
media header, buflen = 32768, buff = 0x422b80
10:23:24 [25072] <2> io_ioctl: command (5)MTREW 1 from (bptm.c.4951)
on drive index 0
10:23:24 [25072] <2> io_read_media_header: block read is not a
NetBackup media header, len = 512, media id 000006, drive index 0,
data is ANSI-format
10:23:24 [25072] <8> write_backup: FREEZING media id 000006, it
contains ANSI-format data and cannot be used for backups
how do I solve it the easiest way, without getting inconsistency problems in
netbackup?
/jonas
Jonas Blåberg
Cell Network Sverige AB
Kruthusgatan 17,6
S-411 04 Göteborg
jonas.blaberg AT cellnetwork DOT com
@office: +46-(0)31-707 69 85
not@office: +46-(0)709-95 00 68
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