Discussions related to exporting backups to tape and backing up directly to tape.
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mkretzer
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Restore error after U4b: Error [MT]SCSI PASS THROUGH DIRECT

Post by mkretzer »

Hello,

case 03662660.
After update 4b we get:

Error Restore error. Error: [MT]SCSI PASS THROUGH DIRECT ended with Scsi Error Fixed format, current; Sense key: Illegal Request. Additional sense: Invalid field in command information unit

when we try to restore. We tried different media sets, different drives and tapes written by different drives. No restore is working!

Markus
mkretzer
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Re: Restore not possible after u4b

Post by mkretzer »

Support found something and we verified via backup test: Hardware encryption does not seem to work with 4b!

2 days ago with 4a backups used HW encryption now with 4b it only uses software encryption. Also we cannot restore......
Dima P.
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Re: Restore not possible after u4b

Post by Dima P. »

Hello Makrus,

The case is being reviewed by RnD folks. Stay tuned.
mkretzer
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Re: Restore not possible after u4b

Post by mkretzer »

Thank you i see that it was escalated :-)
Gostev
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Re: Restore not possible after u4b

Post by Gostev »

QC confirmed this as a bug that happens when the tape library's hardware encryption setting is set to "Application managed". We will issue a KB with the hotfix shortly. The data on tapes is fine, so restore will work fine from the existing tapes once the hotfix is applied.
mkretzer
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Re: Restore not possible after u4b

Post by mkretzer »

@gostev worst timing ever for us in the middle of an audit :-)

But at least we can show them what a failed restore test looks like. This happens not so often with Veeam...
Do you have an ETA for the patch?
Dima P.
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Re: Restore not possible after u4b

Post by Dima P. »

Markus,

Sorry to hear that! We've prepared a private fix for Update 4b and now it's being tested by our QA department. Once it's signed - you'll get it via support team.
mkretzer
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Re: Restore not possible after u4b

Post by mkretzer »

Is the fix only "touching" the restore part? Then we could test now - it cannot get any worse as "unable to restore"
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Re: Restore not possible after u4b

Post by Dima P. »

Yes, fix will include enable the ability to perform recovery from the previously written tape and correct the accidental failover to application aware encryption during backup (whenever hardware encryption is available it should be used instead of software encryption).
mkretzer
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Re: Restore not possible after u4b

Post by mkretzer »

... and it works perfectly! Many thanks!
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Re: Restore not possible after u4b

Post by Dima P. »

Markus,

Glad to hear it and sorry for any inconvenience caused. Cheers!
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Re: Restore not possible after u4b

Post by Gostev » 2 people like this post

Here's a KB article with the hotfix > KB2981
bucoops
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Re: Restore error after U4b: Error [MT]SCSI PASS THROUGH DIRECT

Post by bucoops » 2 people like this post

Had the same (trouser filling) error when trying to restore a 2 year old backup tape. The hotfix worked for me (phew!).
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Re: Restore error after U4b: Error [MT]SCSI PASS THROUGH DIRECT

Post by jsaccomani » 1 person likes this post

I was having the same problem after the upgrade. I was doing a restore of a June tape, and it gave the error. I installed KB and it worked for me. Thanks !!!
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Re: Restore error after U4b: Error [MT]SCSI PASS THROUGH DIRECT

Post by Uncle.Pete » 1 person likes this post

In my case the error was slightly different, but the supplied hotfix worked for me also:

Restore error. Error: [MT]SCSI PASS THROUGH DIRECT ended with Scsi Error Fixed format, current; Sense key: Aborted Command. Additional sense: Initiator response timeout
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