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I'm trying to (re) verify a backup to DVD. Every time I try, I get an assert failure at "elem.c-918". It never asserts during the verify phase of a backup. I have also gotten that assert failure when doing a verify on a tape (DAT4).

 

Has anyone else seen this? Any workarounds?

 

I haven't yet tried to restore from >these< backup media, although I've done successful restores before. Still, doesn't give me much confidence in the backup, eh?

 

Hugh Hoover

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I checked the various logs and find that it appears to be related to a read failure - if that's the case, this is pretty unacceptable!

Note that the error doesn't occur in the same place - it doesn't appear to be a hard read failure on the disk. Or at least Retrospect doesn't fail fatally on the error every time.

 

from operations log:

+ Executing $[24]Verify$[25] at 4/13/2006 10:48

To backup set $[*!s319,,14,+3]NotOnTape<C9>

$[40] Trouble reading: <D2>8-NotOnTape<D3> (2982), error 206 (drive reported a failure: dirty heads, bad media

, etc.).

Internal consistency check failed:

Assertion check at "elem.c-918"

Additional error information for device "PIONEER DVD+R - RDI" [1:0],

Sense > f0 00 03 00 18 14 c0 0e 00 00 00 00 11 05 00 00 00 00

(PIONEER |DVD-RW DVR-111D|1.02)

4/13/2006 12:32:12: Execution incomplete.

Remaining: 120101 files, 35.2 GB

Completed: 78121 files, 32.6 GB

Performance: 371.2 MB/minute

Duration: 01:43:37 (00:13:44 idle/loading/preparing)

Quit at 4/13/2006 12:32

 

From the error log (Retrospect.error.log.c063f548):

Retrospect detected a failure:

 

This report documents an unusual condition detected by Retrospect<D5>s

internal integrity checking. This might be caused by a software bug,

but can also be the result of an incompatibility, hardware malfunction,

damaged system software, or other problems. Details on possible causes

can be found on EMC<D5>s website:

 

http://www.emcdantz.com/support

 

For further assistance, call us at (888) 777-5664 or (925) 948-9050.

Please be prepared to provide us a brief description of the steps

that led to this failure along with the assert log.

 

 

---

Retrospect Problem Report

date: 4/13/2006 12:32

version: 6.1.126

 

Internal consistency check failed:

Assertion check at "elem.c-918"

 

Stack Crawl...

DATA_0000 +50a38

DATA_0000 +12e8fc

DATA_0000 +2cc14

DATA_0000 +1dfc0

DATA_0000 +65efc

DATA_0000 +34344

DATA_0000 +1aea28

DATA_0000 +1add74

DATA_0000 +34344

DATA_0000 +19a790

DATA_0000 +59ed4

DATA_0000 +5a0d0

DATA_0000 +19ab68

DATA_0000 +59ed4

DATA_0000 +34458

DATA_0000 +5a154

DATA_0000 +19abf0

DATA_0000 +34344

DATA_0000 +101c7c

DATA_0000 +34344

DATA_0000 +10d3a4

DATA_0000 +59ed4

DATA_0000 +5a0d0

DATA_0000 +59ed4

DATA_0000 +5a0d0

DATA_0000 +10d468

DATA_0000 +59ed4

DATA_0000 +5a0d0

DATA_0000 +2ce60

DATA_0000 +59ed4

DATA_0000 +5a0d0

DATA_0000 +2cf58

DATA_0000 +2d0c4

 

oh yeah - hardware:

Hardware Overview:

 

Machine Name: Power Mac G4

Machine Model: PowerMac3,5

CPU Type: PowerPC G4 (2.1)

Number Of CPUs: 2

CPU Speed: 1 GHz

L2 Cache (per CPU): 256 KB

L3 Cache (per CPU): 2 MB

Memory: 1.5 GB

Bus Speed: 133 MHz

Boot ROM Version: 4.3.3f2

 

ATA Bus:

 

PIONEER DVD-RW DVR-111D:

 

Capacity: 4.38 GB

Model: PIONEER DVD-RW DVR-111D

Revision: 1.02

Removable Media: Yes

Detachable Drive: No

BSD Name: disk2

Protocol: ATAPI

Unit Number: 0

Socket Type: Internal

OS9 Drivers: No

S.M.A.R.T. status: Not Supported

 

SCSI Parallel Domain 0:

 

Initiator Identifier: 7

 

SCSI Target Device @ 0:

 

Manufacturer: SEAGATE

Model: ST336605LW

Revision: 3700

SCSI Target Identifier: 0

SCSI Device Features: Wide, Sync, DT

SCSI Initiator/Target Features: Wide, Sync, DT

Peripheral Device Type: 0

 

SCSI Logical Unit @ 0:

 

Capacity: 34.18 GB

Manufacturer: SEAGATE

Model: ST336605LW

Revision: 3700

Removable Media: Yes

Detachable Drive: No

BSD Name: disk0

OS9 Drivers: Yes

SCSI Logical Unit Identifier: 0

S.M.A.R.T. status: Not Supported

Volumes:

gurney:

Capacity: 34.18 GB

Available: 3.28 GB

Writable: Yes

File System: Journaled HFS+

BSD Name: disk0s9

Mount Point: /Volumes/gurney

 

SCSI Target Device @ 1:

 

Manufacturer: SEAGATE

Model: ST373405LW

Revision: 0003

SCSI Target Identifier: 1

SCSI Device Features: Wide, Sync, DT

SCSI Initiator/Target Features: Wide, Sync, DT

Peripheral Device Type: 0

 

SCSI Logical Unit @ 0:

 

Capacity: 68.37 GB

Manufacturer: SEAGATE

Model: ST373405LW

Revision: 0003

Removable Media: Yes

Detachable Drive: No

BSD Name: disk1

OS9 Drivers: No

SCSI Logical Unit Identifier: 0

S.M.A.R.T. status: Not Supported

Volumes:

stilgar:

Capacity: 28.06 GB

Available: 3.04 GB

Writable: Yes

File System: Journaled HFS+

BSD Name: disk1s2

Mount Point: /

sandbox:

Capacity: 40.3 GB

Available: 16.44 GB

Writable: Yes

File System: UFS

BSD Name: disk1s3

Mount Point: /Volumes/sandbox

 

System Software Overview:

 

System Version: Mac OS X 10.4.6 (8I127)

Kernel Version: Darwin 8.6.0

Boot Volume: stilgar

Computer Name: stilgar

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Hi Hugh,

 

An RDU was just released which addresses an elem.c-918 assert. I don't know if it's the exact same assert you are seeing though as this seemed to happen when searching pre-Retrospect 6.x backup sets. Here's the forum thread on it: http://forums.dantz.com/ubbthreads/showflat.php?Cat=0&Number=69422&page=0&view=collapsed&sb=5&o=&fpart=1

 

Please give the driver update a try and let us know how it goes: http://kb.dantz.com/article.asp?article=8136&p=2

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  • 1 month later...

Hello,

 

I have the same problem and have tried the driver update twice, just having done it again.

 

Because of having lots and lots and lots of problems with Retrospect and writing to dvds recently, I even bought a new driver for my applemac, and it is a supported one, so that cannot possibly be the problem. I have installed it (two days ago) and have burnt disks successfully. My os is 10.4.6.

 

So when I suddenly started yet again to have trouble burning to dvd, I decided to do a check backup as it is quite new and therefore not to big to check. And now I find I have an "Internal consistency check failed: Assertion check at "elem.c-918". This is again after reinstalling the driver update.

 

My driver is the Pioneer 111D. The disks I am currently using are Titanium Datawrite DVD+R.

 

PLEASE can someone suggest something. Clearly, having bought a new driver, I have few other options. Retrospect used to be so stable and now I am really frustrated as I am unsure whether I can trust that my backups of my work, which are vital, are safe or not.

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Hello, is this what you mean:

 

 

Machine Name: Power Mac G5

Machine Model: PowerMac7,3

CPU Type: PowerPC G5 (2.2)

Number Of CPUs: 2

CPU Speed: 1.8 GHz

L2 Cache (per CPU): 512 KB

Memory: 1.5 GB

Bus Speed: 900 MHz

Boot ROM Version: 5.1.8f7

 

PIONEER DVD-RW DVR-111D:

 

Firmware Revision: 1.19

Interconnect: ATAPI

Burn Support: Yes (Unsupported)

Profile Path: None

Cache: 0 KB

Reads DVD: Yes

CD-Write: -R, -RW

DVD-Write: -R, -RW

Burn Underrun Protection CD: Yes

Burn Underrun Protection DVD: Yes

Write Strategies: CD-TAO, CD-SAO, CD-Raw, DVD-DAO

Media: No

 

Retrospect 6.1.126 with latest driver as suggested before in this thread.

 

thanks

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