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Phantom disk problem.



 
 
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  #1  
Old December 12th 18, 11:51 PM posted to alt.comp.os.windows-10
Peter Jason
external usenet poster
 
Posts: 2,310
Default Phantom disk problem.


On starting up this morning I get a prompt that
the C: drive needs repairing, & that I should
restart.

I did, and the computer did the chkdsk & repair
routine.

It then restarted and the system stopped at auto
repair and then went to the blue screen with the
usual options to either restart, restore etc.

I chose restart & the computer restarted as
normal. Of course I rushed to do an image backup.

The "HD Tune" found nothing wrong.

What's going on?

Among others, this figures prominently in Event
Viewer.....
https://postimg.cc/F1Shsg0n

Ads
  #2  
Old December 13th 18, 02:00 AM posted to alt.comp.os.windows-10
Paul[_32_]
external usenet poster
 
Posts: 11,873
Default Phantom disk problem.

Peter Jason wrote:
On starting up this morning I get a prompt that
the C: drive needs repairing, & that I should
restart.

I did, and the computer did the chkdsk & repair
routine.

It then restarted and the system stopped at auto
repair and then went to the blue screen with the
usual options to either restart, restore etc.

I chose restart & the computer restarted as
normal. Of course I rushed to do an image backup.

The "HD Tune" found nothing wrong.

What's going on?

Among others, this figures prominently in Event
Viewer.....
https://postimg.cc/F1Shsg0n


This thread gives me the "name" of the thing.
It's a Macrium service as far as I know.

https://forum.macrium.com/Topic23031.aspx

Macrium Reflect Change Block Tracker (MRCBT)

EventID 1013

VolumeShadowCopy4

*******

This is a "service" that runs with Macrium 7 or so.
As far as I know.

It has something to do with keeping track of
changed clusters.

It may have something to do with differential or
incremental backups.

But since it runs when you're not doing anything
or have any scheduled stuff set up, it's a mystery
as to what it's doing.

Shadow Copies are invented, to allow "freezing" a volume
at a particular point in time, and "new" writes are
placed where they won't upset the frozen image. The
backup software might refer to the Shadow Copy with
the frozen image available in it. The "regular running"
OS refers to the set of clusters that are currently
up to date at the current point in time.

Shadow Copies on OSes Vista+, support persistent shadows.
That means a Shadow set up on one boot cycle in Vista,
can continue to be used on another boot cycle. The
OS supports as many as 64 shadows at one time - you
can freeze the OS 64 times, and have things computed
against those frozen points in time. Normally, you
expect something like

vssadmin list shadows

to have a relatively small number of entries, like
about five or so.

*******

OK, now that I looked at your picture a third time,
I see the EventID is 1013.

https://forum.macrium.com/Topic26883.aspx

https://forum.macrium.com/Topic26880.aspx

The threads started Dec.2018 so are relatively recent.

"MRCBT Errors since installing V7.2.3897

IRP_MJ_READ failed on device \Device\HarddiskVolume20 === real disk
with status 0xC0210000 Event ID 1013

IRP_MJ_READ failed on device \Device\HarddiskVolumeShadowCopy10 == shadow
with status 0x80000010 Event ID 1013

they coincide with the installation of: MR v7.2.3897
and continue into v7.2.3906. v7.2.3906 was installed
on the 30th November.
"

"Status 0xC0210000L indicates that the volume was locked
by Bitlocker Drive Encryption and status 0x80000010L
indicates that the volume (shadow copy) was taken offline.

​​ These codes do not technically classify as errors and can
safely be ignored. ​​They do not indicate an issue with either
the disk or with CBT.

​ We are aware that CBT is too aggressive in its generation
of these events and we will address this in the next update.
"

"Status 0x80000001 indicates that the volume (shadow copy)
was taken offline.

This status shows that something attempted to read from
the shadow copy device after it had been taken offline.

It has no dependency on BitLocker.
"

Which might not be quite true, if C: needs CHKDSK.

CBT has a preference in Macrium, which might not work.
Macrium can also be modified to remove CBT, which of course
will likely come back on the next Update.

"Uninstall the CBT component.

Go to Control Panels
Programs and Features
select Reflect
click Change
Modify
uncheck CBT.
"

"I don't do incremental backups, so the advantages of
enabling CBT aren't particularly relevant to me.

A side-benefit is that my full image backups seem to
complete noticeably faster.
"

So CBT is related to incrementals (at the very least).

Not related to full backups, if that is all you do.

It's possible CBT was also the pig in the first Macrium 7
I tested, where I was seeing a service with high CPU, while
Macrium was not running. I wish I'd kept notes of that.
A later version "appeared" fixed.

One of the perils of attempting to be "too whizzy" I guess.

Paul
  #3  
Old December 13th 18, 04:08 AM posted to alt.comp.os.windows-10
Peter Jason
external usenet poster
 
Posts: 2,310
Default Phantom disk problem.

On Wed, 12 Dec 2018 20:00:31 -0500, Paul
wrote:

Peter Jason wrote:
On starting up this morning I get a prompt that
the C: drive needs repairing, & that I should
restart.

I did, and the computer did the chkdsk & repair
routine.

It then restarted and the system stopped at auto
repair and then went to the blue screen with the
usual options to either restart, restore etc.

I chose restart & the computer restarted as
normal. Of course I rushed to do an image backup.

The "HD Tune" found nothing wrong.

What's going on?

Among others, this figures prominently in Event
Viewer.....
https://postimg.cc/F1Shsg0n


This thread gives me the "name" of the thing.
It's a Macrium service as far as I know.

https://forum.macrium.com/Topic23031.aspx

Macrium Reflect Change Block Tracker (MRCBT)

EventID 1013

VolumeShadowCopy4

*******

This is a "service" that runs with Macrium 7 or so.
As far as I know.

It has something to do with keeping track of
changed clusters.

It may have something to do with differential or
incremental backups.

But since it runs when you're not doing anything
or have any scheduled stuff set up, it's a mystery
as to what it's doing.

Shadow Copies are invented, to allow "freezing" a volume
at a particular point in time, and "new" writes are
placed where they won't upset the frozen image. The
backup software might refer to the Shadow Copy with
the frozen image available in it. The "regular running"
OS refers to the set of clusters that are currently
up to date at the current point in time.

Shadow Copies on OSes Vista+, support persistent shadows.
That means a Shadow set up on one boot cycle in Vista,
can continue to be used on another boot cycle. The
OS supports as many as 64 shadows at one time - you
can freeze the OS 64 times, and have things computed
against those frozen points in time. Normally, you
expect something like

vssadmin list shadows

to have a relatively small number of entries, like
about five or so.

*******

OK, now that I looked at your picture a third time,
I see the EventID is 1013.

https://forum.macrium.com/Topic26883.aspx

https://forum.macrium.com/Topic26880.aspx

The threads started Dec.2018 so are relatively recent.

"MRCBT Errors since installing V7.2.3897

IRP_MJ_READ failed on device \Device\HarddiskVolume20 === real disk
with status 0xC0210000 Event ID 1013

IRP_MJ_READ failed on device \Device\HarddiskVolumeShadowCopy10 == shadow
with status 0x80000010 Event ID 1013

they coincide with the installation of: MR v7.2.3897
and continue into v7.2.3906. v7.2.3906 was installed
on the 30th November.
"

"Status 0xC0210000L indicates that the volume was locked
by Bitlocker Drive Encryption and status 0x80000010L
indicates that the volume (shadow copy) was taken offline.

?? These codes do not technically classify as errors and can
safely be ignored. ??They do not indicate an issue with either
the disk or with CBT.

? We are aware that CBT is too aggressive in its generation
of these events and we will address this in the next update.
"

"Status 0x80000001 indicates that the volume (shadow copy)
was taken offline.

This status shows that something attempted to read from
the shadow copy device after it had been taken offline.

It has no dependency on BitLocker.
"

Which might not be quite true, if C: needs CHKDSK.

CBT has a preference in Macrium, which might not work.
Macrium can also be modified to remove CBT, which of course
will likely come back on the next Update.

"Uninstall the CBT component.

Go to Control Panels
Programs and Features
select Reflect
click Change
Modify
uncheck CBT.
"

"I don't do incremental backups, so the advantages of
enabling CBT aren't particularly relevant to me.

A side-benefit is that my full image backups seem to
complete noticeably faster.
"

So CBT is related to incrementals (at the very least).

Not related to full backups, if that is all you do.

It's possible CBT was also the pig in the first Macrium 7
I tested, where I was seeing a service with high CPU, while
Macrium was not running. I wish I'd kept notes of that.
A later version "appeared" fixed.

One of the perils of attempting to be "too whizzy" I guess.

Paul


Thank, I did yet another Properties/Tools/Check on
all my disks and found a remote one (an old Intel
SSD) that needed fixing. After this the problem
went away. I note that Macrium always detects
all the disks when starting & maybe this caused
it.
 




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