Re: [ubuntu-uk] New hard drive errors

[Simon Greenwood]

On 18 June 2016 at 21:53, Mark Fraser  wrote:

>
> > On 18 June 2016 at 16:21, Mark Fraser  wrote:
> > > Bought a new 3TB hard drive this week onto which I created a new GPT
> > > partition
> > > table and a 3TB ext4 partition. This completed successfully and I used
> > > rsync
> > > to copy some files onto it.
> > >
> > > The next day, I was unable to mount the drive and so I ran fsck on it.
> > > This
> > > failed pass 5: Checking group summary information with lots of block
> > > bitmap
> > > differences.
> > >
> > > I fixed these, but on running fsck a second time, these block
> differences
> > > were
> > > back.
> > >
> > > Now this drive is currently sat in an external USB tray so that I could
> > > copy
> > > files across before replacing the one in the computer. Are these errors
> > > due to
> > > it being on USB or is the drive faulty?
>
> > What did you use to create the partition? The only thing that I have
> found
> > that works properly is gdisk.
>
> I'd originally used KDE Partition Manager, but tried again with gdisk.
> Still
> getting the Block bitmap differences: .
>
>
​How is the disk mounted? If you're just using automount consider giving it
a dedicated mount point with a ​fixed directory (ie /mnt/disk or similar)
and telling mount what the filetype is. That said, I have seen this issue
exactly using rsync and wrongly formatted 3Tb drives in a fixed backplane
so I don't think it's the connectivity - but then again an external GPT
disk could indicate a bug. Maybe try partitioning and formatting,
disconnecting and reconnecting the drive and mounting it, which may show
issues in dmesg or syslog.

s/
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Re: [ubuntu-uk] New hard drive errors

[Colin Law]

On 18 June 2016 at 16:21, Mark Fraser  wrote:
> Bought a new 3TB hard drive this week onto which I created a new GPT partition
> table and a 3TB ext4 partition. This completed successfully and I used rsync
> to copy some files onto it.
>
> The next day, I was unable to mount the drive and so I ran fsck on it. This
> failed pass 5: Checking group summary information with lots of block bitmap
> differences.

If you have not already done so then check the SMART data for the disc.

Also look in syslog to see if there are any rude messages.

Colin

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Re: [ubuntu-uk] New hard drive errors

[Barry Drake]

On 18/06/16 16:21, Mark Fraser wrote:

I fixed these, but on running fsck a second time, these block differences were
back.  Now this drive is currently sat in an external USB tray so that I could 
copy
files across before replacing the one in the computer. Are these errors due to
it being on USB or is the drive faulty?

You might try getting a copy of Windows - either Win 7 or XP. Either of 
these will say that the disk has an unrecognisable system, and will 
offer fdisk to delete the partition.  It will let you use fdisk to 
create a new NTFS partition, and will then let you do a long format to 
begin installation.  MS Win is very verbose in long-format mode, and you 
will find out if the disk is faulty.  I'm not sure whether MS can work 
with a USB drive?  I have a built-in trayless caddy, so I don't use a 
USB arrangement.  Incidentally, Windows will trash the boot sector of 
/dev/sda, so unplug that before trying the process.


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Re: [ubuntu-uk] New hard drive errors

[Mark Fraser]

On Saturday, 18 June 2016 16:44:07 BST Simon Greenwood wrote:

> 
> On 18 June 2016 at 16:21, Mark Fraser  wrote:
> > Bought a new 3TB hard drive this week onto which I created a new GPT
> > partition
> > table and a 3TB ext4 partition. This completed successfully and I used
> > rsync
> > to copy some files onto it.
> > 
> > The next day, I was unable to mount the drive and so I ran fsck on it.
> > This
> > failed pass 5: Checking group summary information with lots of block
> > bitmap
> > differences.
> > 
> > I fixed these, but on running fsck a second time, these block differences
> > were
> > back.
> > 
> > Now this drive is currently sat in an external USB tray so that I could
> > copy
> > files across before replacing the one in the computer. Are these errors
> > due to
> > it being on USB or is the drive faulty?

> What did you use to create the partition? The only thing that I have found
> that works properly is gdisk.

I'd originally used KDE Partition Manager, but tried again with gdisk. Still 
getting the Block bitmap differences: .


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Re: [ubuntu-uk] New hard drive errors

[Simon Greenwood]

What did you use to create the partition? The only thing that I have found
that works properly is gdisk.

s/

On 18 June 2016 at 16:21, Mark Fraser  wrote:

> Bought a new 3TB hard drive this week onto which I created a new GPT
> partition
> table and a 3TB ext4 partition. This completed successfully and I used
> rsync
> to copy some files onto it.
>
> The next day, I was unable to mount the drive and so I ran fsck on it. This
> failed pass 5: Checking group summary information with lots of block bitmap
> differences.
>
> I fixed these, but on running fsck a second time, these block differences
> were
> back.
>
> Now this drive is currently sat in an external USB tray so that I could
> copy
> files across before replacing the one in the computer. Are these errors
> due to
> it being on USB or is the drive faulty?
>
> --
> Registered Linux User #466407 http://counter.li.org
>
> --
> ubuntu-uk@lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk
> https://wiki.ubuntu.com/UKTeam/
>



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[ubuntu-uk] New hard drive errors

[Mark Fraser]

Bought a new 3TB hard drive this week onto which I created a new GPT partition 
table and a 3TB ext4 partition. This completed successfully and I used rsync 
to copy some files onto it.

The next day, I was unable to mount the drive and so I ran fsck on it. This 
failed pass 5: Checking group summary information with lots of block bitmap 
differences.

I fixed these, but on running fsck a second time, these block differences were 
back.

Now this drive is currently sat in an external USB tray so that I could copy 
files across before replacing the one in the computer. Are these errors due to 
it being on USB or is the drive faulty?

-- 
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