On Mon, Jun 21, 2010 at 7:35 AM, Lukas Kolbe <l-lists AT einfachkaffee DOT de> 
wrote:
> Am Montag, den 21.06.2010, 11:06 +0100 schrieb Alan Brown:
>> On 21/06/10 10:56, Lukas Kolbe wrote:
>> >
>> > For comparison, I dd'ed a volume to /dev/null while the copy job was
>> > running:
>> > [root@shepherd ~]# dd if=/var/bacula/dp/fs1/Vol0070 of=/dev/null bs=1M
>> > 9175040000 bytes (9.2 GB) copied, 12.0225 seconds, 763 MB/s
>> >
>> > But dd'ing it to another file reveals a problem with the storage
>> > subsystem I believe:
>> >
>> > [root@shepherd ~]# dd if=/var/bacula/dp/fs1/Vol0070 
>> > of=/var/bacula/dp/fs2/xxx bs=1M
>> > 849346560 bytes (849 MB) copied, 32.665 seconds, 26.0 MB/s
>> >

Do you have a hardware raid controller without a BBunit and thus the
write cache is disabled to protect corruption that could occur if the
machine crashed or lost power?

John

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