udev oddness in microcore

[johnsmith]

I have been developing a program which will later run on microcore.

in this program I at some point want to get some information on harddrives and use udev to do so.

Now it seems udev is incomplete on tinycore or something because I cannot get the information out of the drives even though the exact same hardware setup with debian I can use udev to get the information.

I am looking to get serial and model.

Is there a way to fix this?

[gerald_clark]

Try hdparm.

[johnsmith]

I am looking to integrate it into a program. not using an external program...
udev offers libraries libudev.

[tinypoodle]

Install the udev-lib extension.

Subject of thread appears to be rather misleading then.

[johnsmith]

I have statically compiled. the problem is Udev NOT reporting it, they dont get populated at boot time.

try for yourself and type into console

Code: [Select]

udevadm info --query=property --name="device path here"
there is no entry for model,serial,wwn etc this incidentally also means you cant make udev rules

[tinypoodle]

Please provide a concrete example for "device path here"

[johnsmith]

/dev/sda
/dev/hda

basically any device that is populated by udev. so cdrom drives sg0 etc all should work

[tinypoodle]

Code: [Select]

udevadm info --query property --attribute-walk --name sda|grep -e serial -e model

[Juanito]

I noticed something like this before in a different context - tinycore uses an edited version of the set of rules that comes with the udev-173 package, so you probably need to use one or more of the original rules in full.

[curaga]

You can get disk models directly from /sys, but serials aren't exposed anywhere, so you need to query them via scsi somehow (full udev, or any other helper).

[tinypoodle]

Code: [Select]

sudo sh -c 'find /sys -type f -name serial|xargs cat'
seems to work for me.

[curaga]

I don't have SCSI serials there, only USB?

[johnsmith]

is it possible to get full udev for microcore?

I really only want it as backup if the scsi inquiry doesnt work, but I was just surprised that udev isnt fully functional

[tinypoodle]

I don't have SCSI serials there, only USB?

Indeed /dev/sda with which I tested as shown in prior posts is a USB device here, while no SCSI devices are connected.

I would not have expected such a difference in exposure.