Sym53c8xx module active in X5000 kernels?

AmigaOne X5000 platform specific issues related to Linux only.

Re: Sym53c8xx module active in X5000 kernels?

Postby xeno74 » Wed May 30, 2018 10:37 am

Roland wrote:MANY THANKS Christian - that did the trick!!!


Hi Roland,

Fantastic news! :-) Could you please test your SCSI controller with the RC7 of kernel 4.17 and with the latest stable kernel 4.16.12?

Thanks in advance,
Christian
http://www.amigalinux.org
http://www.supertuxkart-amiga.de

Running Linux on AmigaONEs can require some tinkering.
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Re: Sym53c8xx module active in X5000 kernels?

Postby Roland » Thu May 31, 2018 11:04 am

xeno74 wrote: Fantastic news! :-) Could you please test your SCSI controller with the RC7 of kernel 4.17 and with the latest stable kernel 4.16.12?


Tested... It works with both kernels if the 'MEM=3500M' variable is set.

BTW, I noticed a nice improvement in 4.17.rc7... When I exit from Ubuntu 16.04 by choosing 'reboot', the shutdown process goes now without any delays! With all the earlier kernel lines, there appears a peculiar 'shutdown process' which takes always 1 min 30 secs to end. Usually I have not bothered to wait but just pressed the reset button... Debian and Fedora do not show that slowdown with any kernel version.
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Re: Sym53c8xx module active in X5000 kernels?

Postby xeno74 » Thu May 31, 2018 10:11 pm

Hi Roland,

Many thanks for testing your SCSI controller with our latest kernels.

Cheers,
Christian
http://www.amigalinux.org
http://www.supertuxkart-amiga.de

Running Linux on AmigaONEs can require some tinkering.
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Re: Sym53c8xx module active in X5000 kernels?

Postby Roland » Sun Jun 03, 2018 10:26 pm

Roland wrote:Speaking of SCSI disks, is there for Linux a similar program/command like "scsiswitch" for AmigaOS? With it you can e.g. spin up and down a scsi disk. That is handy for disks which you use only occasionally, e.g. for backups or confidental data.


I found for Debian a package called "scsitools", which includes a "scsi-spin" command. With options -u and -d a any drive can be spinned up or down. It seems to work...

BUT... Even if I have on a SCSI drive the "motor start enable" jumper closed, so that the drive does not automatically spin up when X5000 is turned on, it will start spinning as soon as Linux is started! Also, when I give the command "scsi-spin -d [drive]" and the drive is spinned down, it will almost immediately spin up again!

Xeno/Spectre: is there anything at kernel level (some option) or otherwise to do to prevent these unwanted 'autospin' effects, so that the drive will spin up ONLY when the "scsi-spin -u" command is given by the user?!?
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