Re: ST340823A disk size issue - Revisited

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Eddie Atherton wrote:
Hi,

I found the above thread while searching for the reason I was getting lots of errors while trying to build out a new server. Yes, I am using an ST340823A drive. However, I am getting slightly different results for the drive capacity, which I'm not sure if that could cause issues with the patch.

I actually have 2 of these drives. One is in a WinBlows machine, and the other is in my new server. Using an Ubuntu Live CD, I was able to verify that the drive in the WinBlows machine is behaving exactly the same as the original problem report. However, the drive in my server, running Slackware 11.0, reports a different "current capacity", as shown here:

Linux version 2.6.17.13 (root@tree) (gcc version 3.4.6) #1 Sat Sep 9 01:11:49 CDT 2006
...
hda: Host Protected Area detected.
       current capacity is 78165359 sectors (40020 MB)
       native  capacity is 78165361 sectors (40020 MB)
hda: Host Protected Area disabled.
hda: 78165361 sectors (40020 MB) w/512KiB Cache, CHS=65535/16/63, UDMA(100)

An update to this. I applied the latest patch set at the time, rc3 + git7, and it all appeared to work. I didn't get the errors any more.

Well, I didn't the first time I checked.  :)

Now I've noticed that they are happening again. Sometimes. Here's the interesting part, this is what I saw one time:

Linux version 2.6.23-rc3-git7-smp (root@Brutus) (gcc version 3.4.6) #2 SMP Wed Aug 29 04:12:27 PDT 2007
...
hda: Host Protected Area detected.
       current capacity is 78165357 sectors (40020 MB)
       native  capacity is 78165361 sectors (40020 MB)
hda: Host Protected Area disabled.
hda: 78165361 sectors (40020 MB) w/512KiB Cache, CHS=65535/16/63, UDMA(100)

Notice the current capacity. It's low by 4 sectors, where previously it was only 2. My guess is that my "working" versions were when the sector count was an even number, which is why I questioned the patch initially. Looking back through my /var/log/syslog, I see capacities of, in chronological sequence:

78165359
78165360
78165360
78165359
78165359
78165357
78165357
78165358
78165357
78165359

Weird.

Cheers,
Eddie
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