[Coco] DW4 problems

[Aaron Wolfe]

The largest OS9 image I use is 40MB in size, so copying monster RBF
filesystems is not well tested.  There may be unexpected issues.

Copying large drives may require an unusually large amount of RAM
(approx equal to the size of the drive you are copying + 8MB) if DW is
in caching mode.
By default the Java VM will have a relatively small limit, depending
on your OS anywhere from 32MB to 256MB.  That's totally fine for
normal use, but when changing every sector on a drive while the server
is caching changed sectors, you may run out.

You can allocate any amount of ram to DW using the command line.  The
command will look like:

java -Xmx1024 -jar DW4UI.jar

(assuming you are currently in the directory where DW4UI.jar lives,
which is a good idea)

That example gives DW up to 1024MB ram.  This does not mean DW will
actually request or use 1024MB, just means that if it does it can have
it.

I am not certain, but this may solve both issues.
-Aaron


On Sat, Oct 13, 2012 at 6:32 AM, Gene Heskett <gheskett at wdtv.com> wrote:
> On Saturday 13 October 2012 05:19:09 Bob Devries did opine:
>
>> I might add that I tried using BACKUP to clone the SCSI HD to the DW
>> disk image, but that quits at the first error 245.
>>
> That is about the same as I got, trying to do a sector by sector copy using
> my basic09 version of the linux dd, it fell over at some random point, 67
> megs was as far as I got in quite a few tries, and that image was not
> recognized as an os9 formatted image by dw at any time in those attempts.
>
> So, since linux never really wrote that 67 megs, reporting that file to be
> only 25 bytes long, I nuked, touched a new one and chowned it to me.  And
> now I'll try to format it.  I used dmode to make it match the hd I want to
> back up.
>
> If format screws up my /dd like it did the last time I am going to one
> unhappy camper.  It did report similar characteristics, but I killed it
> after about 30 seconds as the gui said that the vdisk mounted on /x1 was
> not being accessed for anything.  Now I'm dchecking /dd and when thats done
> I'll do /dh.  If those come back intact, I'll repeat the experiment but
> wait for it to ask me for a disk name.  Maybe format, on a hard drive, only
> writes LSN0 after the disk name? question.  I do not know.
>
> On the previous attempt to format /s1, it was not until it had started the
> surface verify that I discovered it was working on /dd=/s0, its access led
> was blinking like crazy and I was 10 days recovering from that, with some
> stuff lost forever!  It totally ignored the fact that a dmode /s1 said
> drv=01, while a dmode /dd said drv=00.
>
> And now I can't run dcheck, error 237-ram full.  And smap says I only have
> 14 pages, 3kb free.  In 2 pieces.  telnet>quit is an invalid command.  I
> hope to hell I can reboot. Whew, did, now 19 pages & 4kb according to smap.
> And dcheck seems to be running this time.
>
> Later.  When I know more...
>
>
>
>
>
>>   ----- Original Message -----
>>   From: Bob Devries
>>   To: CoCoList for Color Computer Enthusiasts
>>   Sent: Saturday, October 13, 2012 5:53 PM
>>   Subject: DW4 problems
>>
>>
>>   I seem to be getting a lot of time outs using DW4, which cause ERROR
>> 245 on the coco end. Here's some lines from the log:
>>
>>   Sat Oct 13 2012 17:36:09.250  WARN   DWProtocolHandler   dwproto-0-10
>>       Timed out reading from CoCo in OP_WRITE Sat Oct 13 2012
>> 17:36:09.250  WARN   DWProtocolHandler   dwproto-0-10        OP_WRITE
>> took 235ms.  Server loaded or low on ram?
>>
>>   DW4 is being run on an Intel P4 2.8GHz with 2GB ram. Besides the usual
>> clutter running in a windows background (AVG etc) the only application
>> running is Outlook Express, set to grab emails every 10 mins.
>>
>>   The connection is like this:
>>
>>   Coco <--> ATEN USB dongle <--> 8-port powered USB hub <--> USB2 Port
>> on PC.
>>
>>   The CRC of DW is $5136C3
>>
>>   Regards, Bob Devries
>>   Dalby, QLD, Australia
>>
>>   PS: I sent a more extended bug report via the DW4 UI to wherever that
>> ends up.
>>
>> --
>> Coco mailing list
>> Coco at maltedmedia.com
>> http://five.pairlist.net/mailman/listinfo/coco
>
>
> Cheers, Gene
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> My web page: <http://coyoteden.dyndns-free.com:85/gene> is up!
> Madness takes its toll.
>
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