James Bottomley wrote:
On Sat, 2010-02-20 at 22:30 +0100, Asdo wrote:
It rereads the wrong size, i.e. the one of the old disk :-(
I am sure sdr is the correct disk, I even identified it by doing dd
if=/dev/sdr of=/dev/null and then looking at the activity led to confirm
it's the right drive. It should have read a size of 1TB.
What's happening is that libata is returning the old cached size to
READ_CAPACITY. This would likely indicate some type of libata hotplug
failure ... the dmesg across the unplug/plug would be useful for
diagnosing this.
Thanks for your reply
Unfortunately there is absolutely no dmesg output when I swap the disk.
I think it does not realize I am swapping it.
One time I tried to do smartctl -a when the disk was out, and all kernel
hanged. I had to hard reset the system.
So there is no way to uncache the read_capacity or to enter the value
manually huh?
(I say in advance that I cannot remove the driver module from the
running kernel because the operating system is on other disks also on
the same controller)
Thank you
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