[Bug 548513] Re: Some firewire & usb disks not working under 10.04

[Martin Pitt]

For the record, this was just discussed in #u-release:

pitti	cjwatson: it looks like you just remove the -B option, while Jeroen's change disables hdparm altogether (hdparm-functions has other bits); but I believe -B is the only thing we actually ship by default
cjwatson	that was my assessment from reading the code
cjwatson	double-checking wouldn't hurt
pitti	cjwatson: it seems to be that the bug doesn't happen on that particular operation, but on the initial IDENTIFY DEVICE
pitti	(incidentally that's very similar to the recent udisks-probe-ata-smart bug)
pitti	cjwatson: so from what I can see, if an user would customize /etc/hdparm.conf to set other options than -B, they would again be done for firefire drives, too, and again break them?
pitti	(conversely, with Jeroen's variant you couldn't ever run custom hdparm commands on any firewire drive)
cjwatson	I think so
cjwatson	though hdparm.conf can be disk-specific
pitti	sounds like being between a rock and a hard place :(
pitti	ah, it can?
pitti	ok, then I prefer your fix indeed :)
pitti	ah, right, these come in /dev/foo { } blocks
cjwatson	such is my understanding
cjwatson	a release note mightn't hurt

I don't think that one of the two approaches is "obviously" right, but I
think Colin's approach is more flexible for actually being able to
control some fw drives with hdparm (with customized configuration), and
it will stop the corruption on a default installation.

-- 
hdparm's IDENTIFY DEVICE command breaks firewire devices
https://bugs.launchpad.net/bugs/548513
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