Problems with verify the backup.
Digital Unix 4.0D
Backup HW: TZ88 DLT tape-drive
Backup SW Polycenter Networker 4.4
When I run scanner -in /dev/nrmt0h the following errors is displayed:
scanner: (ssid 28827) error decoding save stream
What to do? The manual suggests that the save stream is aborted or that
the tape is damage. No errors are written to the nsr-logs during the
backup and the tape is not wrong, (have tried different tapes). I have
also tried to clean the tape-drive, but the errors still appear.
There was no problem with recovering from the tape and ssid for which
scanner printed the errors. It also seems like the error always comes from
the same saveset.
On one tape (of 4) the following information also appeard (and it repeats
19538 times (with different values)):
scanner: (ssid 28842) existing index entry for
xxxhost.xxx.xxx:/usr/bin/show_uninstalled_info _at_ time 906954502 has sizes
of 89357092 24948 which differs from scanned sizes of 89357092 23900
scanner: (ssid 28842) running total 89380992, save stream claims 89382040,
resetting...
Any suggestions are welcome.
Thanks
/Marcus
Background:
* The backup-station was moved from one host to another and also from
Networker 4.2 to Networker 4.4. The entire index was also moved according
to information about how to move a nsr-server. There was no problem that I
know of.
* After the move a backup was done and I ran scanner -in. No errors where
found.
* After a reboot the device for the TZ88 was changed from /dev/nrmt2h to
/dev/nrmt0h. I verified with dd that everything was ok. The change was
done after a move of some other SCSI devices.
* Some week (1-2) after the move I ran scanner -in again, now I got the
errors mentioned above.
Sample output from "scanner -in"
---------------------------------------------------
scanner: scanning tz88 tape Full.098 on /dev/nrmt0h
scanner: tz88 tape Full.098 already exists in the media index
scanner: ssid 29138: continued on ssid 29139
scanner: ssid 29138: 2000 MB, 787 files
scanner: ssid 29139: continued on ssid 29140
scanner: ssid 29139: 2000 MB, 7619 files
scanner: (ssid 29139) error decoding save stream
scanner: ssid 29140: continued on ssid 29141
scanner: ssid 29140: 2000 MB, 16 files
scanner: ssid 29141: continued on ssid 29142
scanner: ssid 29141: 2000 MB, 19269 files
scanner: ssid 29142: continued on ssid 29143
scanner: ssid 29142: 2000 MB, 21176 files
scanner: ssid 29143: scan complete
scanner: ssid 29143: 143 MB, 1090 files
scanner: ssid 29144: scan complete
scanner: ssid 29144: 775 MB, 27687 files
scanner: ssid 29145: scan complete
scanner: ssid 29145: 285 MB, 8488 files
scanner: (ssid 29145) error decoding save stream
scanner: ssid 29146: scan complete
scanner: ssid 29146: 92 MB, 2710 files
scanner: ssid 29147: scan complete
scanner: ssid 29147: 1382 MB, 32487 files
scanner: ssid 29148: scan complete
scanner: ssid 29148: 82 MB, 6 files
scanner: ssid 29149: scan complete
scanner: ssid 29149: 731 MB, 44533 files
scanner: ssid 29150: scan complete
scanner: ssid 29150: 72 MB, 6 files
scanner: ssid 29151: continued on ssid 29152
scanner: ssid 29151: 2000 MB, 16525 files
scanner: ssid 29152: continued on ssid 29153
scanner: ssid 29152: 2000 MB, 22440 files
scanner: ssid 29153: continued on ssid 29154
scanner: ssid 29153: 2000 MB, 31631 files
scanner: ssid 29154: scan complete
scanner: ssid 29154: 512 MB, 226 files
scanner: (ssid 29154) error decoding save stream
scanner: ssid 29155: scan complete
scanner: ssid 29155: 28 MB, 26 files
scanner: ssid 29156: scan complete
scanner: ssid 29156: 427 MB, 12948 files
scanner: (ssid 29156) error decoding save stream
scanner: ssid 29157: scan complete
scanner: ssid 29157: 1 KB, 2 files
scanner: ssid 29158: scan complete
scanner: ssid 29158: 313 MB, 25133 files
scanner: ssid 29159: scan complete
scanner: ssid 29159: 108 MB, 5266 files
scanner: ssid 29160: scan complete
scanner: ssid 29160: 15 MB, 1514 files
scanner: ssid 29161: scan complete
scanner: ssid 29161: 109 MB, 6 files
scanner: ssid 29162: scan complete
scanner: ssid 29162: 360 MB, 13163 files
scanner: ssid 29163: scan complete
scanner: ssid 29163: 451 MB, 20613 files
scanner: ssid 29164: scan complete
scanner: ssid 29164: 29 MB, 804 files
scanner: ssid 29165: scan complete
scanner: ssid 29165: 438 MB, 7083 files
scanner: ssid 29166: scan complete
scanner: ssid 29166: 78 MB, 1632 files
scanner: ssid 29167: scan complete
scanner: ssid 29167: 42 MB, 6 files
scanner: ssid 29168: scan complete
scanner: ssid 29168: 355 KB, 13 files
bus_reset() eei status dec: 12800, hex: 0x3200
scanner: fn 74 rn 0 read error Error 0 occurred.
scanner: done with tz88 tape Full.098
Received on Mon Oct 12 1998 - 21:03:45 NZDT