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Re: Is this a DD bug?
From: |
Pádraig Brady |
Subject: |
Re: Is this a DD bug? |
Date: |
Sat, 07 Nov 2009 23:56:23 +0000 |
User-agent: |
Thunderbird 2.0.0.6 (X11/20071008) |
address@hidden wrote:
>
> I have a strange dd problem when running the dd command on brand new hard
> drives.
> If I DD to a hard drive that has been previously used, the DD takes about 35
> minutes.
> If I clone to a completely brand new drive, the DD takes over 100 minutes.
> If I immediately run the DD command again, on the same set of drives, the DD
> now only takes 35 minutes.
Very unlikely to be anything to do with dd.
Are these SSDs ? What block size are you using?
What size are the disks. What kernel version are you using.
Maybe `strace -e write -T dd ...` might point to something.
cheers,
Pádraig.
- Is this a DD bug?, daniel_nysveen, 2009/11/07
- Re: Is this a DD bug?,
Pádraig Brady <=