Milan Obuch writes:
On Wednesday 22 July 2009 04:20:27 Sagara Wijetunga wrote:
Hi FreeBSD community
The SCSI device (eg. da1s1) is not created automatically upon a CF card
plug in on an USB multi-card reader on FreeBSD 7.2 (i386) but the SCSI
device (eg. da1s1) is created automatically if I reboot the computer while
the CF card is plug in.
Here are detail:
$ camcontrol devlist
<GENERIC USB Storage-SMC 010D> at scbus0 target 0 lun 0 (pass0,da0)
<GENERIC USB Storage-CFC 010D> at scbus0 target 0 lun 1 (pass1,da1)
<GENERIC USB Storage-MMC 010D> at scbus0 target 0 lun 2 (pass2,da2)
<GENERIC USB Storage-MSC 010D> at scbus0 target 0 lun 3 (pass3,da3)
After the CF card is plugged in:
$ ls -l /dev/ | grep da
crw-r----- 1 root operator 0, 105 Jul 22 13:18 da0
crw-r----- 1 root operator 0, 106 Jul 22 13:18 da1
crw-r----- 1 root operator 0, 107 Jul 22 13:18 da2
crw-r----- 1 root operator 0, 108 Jul 22 13:18 da3
After reboot while the CF card is plugged in:
$ ls -l /dev/ | grep da
crw-r----- 1 root operator 0, 105 Jul 22 13:24 da0
crw-r----- 1 root operator 0, 106 Jul 22 13:24 da1
crw-r----- 1 root operator 0, 110 Jul 22 13:24 da1s1
crw-r----- 1 root operator 0, 107 Jul 22 13:24 da2
crw-r----- 1 root operator 0, 108 Jul 22 13:24 da3
My questions in this regards are:
1. Is this an error/bug in FreeBSD 7.2?
This is known limitation of, I think, GEOM stack.
2. Or, does it require some configuration tweak?
After plugging in your CF card, issue
true > /dev/da1
command. After writing zero bytes (nothing gets actually written into your
media, thus it is not changed at all) GEOM reads some data from media and
creates desired device(s).
Hi Milan, thanks for the reply.
Yep, your suggestion works but it simply unacceptable for end users. We are
the makers of the Tomahawk Desktop (http://www.tomahawkcomputers.com/).
Anybody in the FreeBSD community care to develop a patch to make it possible
to use multi-card readers under FreeBSD?
Best regards
Sagara
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