[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2018-02-28 Thread Phillip Susi
I'm not sure why you were getting those errors, but definitely stop the
udisks service.  Your blktrace shows it being accessed by the "pool"
task.  For some silly reason, the glib thread pool library that udisks
uses decides to rename its threads to "pool" instead of the application
name.

With udisks shut down, use hdparm -y to put the drive into suspend, then
try checking its status with hdparm -C.

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-17 Thread Alan Stern
If you want to get more information about what's happening at the USB
level, you should use usbmon (see Documentation/usb/usbmon.txt in the
kernel source for instructions).  It will tell you what commands are
being sent to the drive, but not which program is responsible for
sending them.  Still, you can use it to compare the different Ubuntu
releases.

(Hint: If you do collect a usbmon trace, it helps to unplug beforehand
as many of the other USB devices as you can, to prevent the data streams
from getting all mixed together.)

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-17 Thread paoletto
so far the feeling is that

-) 3.14 seems to support this drive better, as it appears to be able to 
retrieve its power status and to, more importantly, set it, unlike the previous 
kernel (4.4-)
-) 3.14 seems to be also more invasive. Previously, hdparm -C would return some 
error, but never wake up the drive. on internal SATA drives it would just work, 
and also never wake up the drive. here it seems that if the drive is in 
standby, the command works as expected, but as soon as it gets into some deeper 
sleep (not just spun down, but also led blinking intermittently), then the 
command wakes up the drive that spins up before hdparm returns an output
-) udisk2 seems to be doing something too (note: it is also present on 14.04, 
but it somehow doesn't get in the way in that release). I killed it manually, 
but at some point it respawned again, and automounted the drive which spun up.

I'm Still working to get the 3.14 on 14.04, but the fear is that it
might be multiple things that regressed and might be hard to find. I
might have to go back to 14.04, although, given the current Linux
situation, i doubt that this bug would get even investigated in the next
couple of years..

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-17 Thread paoletto
Seems that with the new kernel the disk stays awake and never even tries
to go standby:

http://codepad.org/lIRqEBOW


Edit:
i did stop this script for a while, and the disk went to sleep (not standby, 
but i think suspend or more. The drive was not only spun down, but the light 
was blinking, so some deep sleep). 

then i restarted it, and hdparm woke it up! (after which it reported 
active/idle).
I never experienced, before, that hdparm -C wakes up a drive.
Can it be that the subsystem now deep-probes the drive in some way?

Next (and possibly last) test i could do is trying 4.14 on a 14.04, assuming it 
will work.
To check if the kernel breaks the expected behavior that is currently provided 
by 14.04

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-17 Thread Alan Stern
It wouldn't be surprising to find that udisks2 is the program waking up
your drive.

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-17 Thread paoletto
Spoke too early, drive just woke up out of the blue, after having been
manually unmounted in nautilus, and forced to standby with hdparm -y
(now that it works), without me re-mounting it or anything.

dmesg does not report anything relevant:
[  641.041831] EXT4-fs (sde1): mounted filesystem with ordered data mode. Opts: 
(null)
[  641.142793] EXT4-fs (sde2): mounted filesystem with ordered data mode. Opts: 
(null)
[ 1277.415515] perf: interrupt took too long (2538 > 2500), lowering 
kernel.perf_event_max_sample_rate to 78750
[ 2388.046183] perf: interrupt took too long (3176 > 3172), lowering 
kernel.perf_event_max_sample_rate to 62750

/sys/block/sde/events_poll_msecs seems to also default to -1

I keep monitoring to see what happens

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-17 Thread paoletto
Trying 4.14.4 ((from mainline debs).
So far it looks promising: Hdparm seems now able to also query/set the status 
(before it was returning an error with this drive), and it's about one H since 
i forced it to standby and the drive is staying in standby.

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-17 Thread paoletto
working on it, but i was also thinking: The same value is returned in 14.04.
Can it be that 16.04 kernel does not honor that value and keeps polling at a 
10minute interval?

these driver sense error always come up at a 600secs interval, and they
are definitely generated by the same process that also wakes up the
drives

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-16 Thread paoletto
first finding:

cat /sys/block/sdb/events_poll_msecs 
-1

will now proceed testing a newer kernel to check if the problem has been
fixed in the meanwhile

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-16 Thread paoletto
Thank you Alan, for providing these valuable info.
Actually i noticed the polling by looking at dmesg. I suspected that the errors 
in my distribution's kernel (4.4.0 in 16.04) were somehow related to a kernel 
polling process with a default of 10 minutes.

I will try to do both things you suggest: try out a 4.14+ kernel and
disable the polling, hoping that the first will work.

FYI, 14.04 with 3.19 (iirc) doesn't wake up the drives out of the box.
Is the polling something that has been added after? Or maybe there is
some additional operation performed in the polling that now wakes up the
drive (and is hopefully related to the fixed bug you mention).

I will post my findings as soon as i have them!

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-16 Thread Alan Stern
I have no idea which kernel versions Ubuntu uses in its releases, but
the recurring Hardware Error bug should be fixed in the 4.14 kernel.  At
least I think it should -- nobody has reported on whether the fix
actually works, so I have no way of knowing.

As for the drive spontaneously waking up...  You may not be aware of
this, but the kernel periodically probes for drive events, even when no
user process is accessing the drive.  You can control the probe
frequency by writing to the /sys/block/sd?/events_poll_msecs file (fill
in the ? with the drive letter).  -1 means to use the system default
probing interval and 0 means to disable polling entirely.

Now, I'm not saying that the kernel polling is what is waking up your
drive.  But it is something you need to know about.

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-16 Thread paoletto
Ok, i think i gathered some relevant evidence.
I had the drive plugged on a 16.04, and at some point i noticed it went standby 
(led blinking intermittently).

Last dmesg lines were [ 6217.720607] perf interrupt took too long (5053 > 
5000), lowering kernel.perf_event_max_sample_rate to 25000
[ 6631.699961] sd 7:0:0:0: [sdc] tag#0 FAILED Result: hostbyte=DID_ERROR 
driverbyte=DRIVER_SENSE
[ 6631.699969] sd 7:0:0:0: [sdc] tag#0 Sense Key : Hardware Error [current] 
[descriptor] 
[ 6631.699973] sd 7:0:0:0: [sdc] tag#0 Add. Sense: No additional sense 
information
[ 6631.699978] sd 7:0:0:0: [sdc] tag#0 CDB: ATA command pass through(16) 85 06 
20 00 00 00 00 00 00 00 00 00 00 00 e5 00
[ 6632.179875] sd 7:0:0:0: [sdc] tag#0 FAILED Result: hostbyte=DID_ERROR 
driverbyte=DRIVER_SENSE
[ 6632.179884] sd 7:0:0:0: [sdc] tag#0 Sense Key : Hardware Error [current] 
[descriptor] 
[ 6632.179889] sd 7:0:0:0: [sdc] tag#0 Add. Sense: No additional sense 
information
[ 6632.179895] sd 7:0:0:0: [sdc] tag#0 CDB: ATA command pass through(12)/Blank 
a1 06 20 da 00 00 4f c2 00 b0 00 00


i checked uptime and it was 1:55. So i took 5 min, and waited until the next 
DRIVE_SENSE error would appear in dmesg, monitoring the situation

And guess what, the drive woke up right before the next error appeared in dmesg!
Like, spin up (led blinking intermittently but much faster) and after 5-7 
seconds, drive ready, and error on dmesg.

 21:14:06 up  2:00,  1 user,  load average: 0,11, 0,41, 1,03
[ 6032.254264] sd 7:0:0:0: [sdc] tag#0 Sense Key : Hardware Error [current] 
[descriptor] 
[ 6032.254266] sd 7:0:0:0: [sdc] tag#0 Add. Sense: No additional sense 
information
[ 6032.254270] sd 7:0:0:0: [sdc] tag#0 CDB: ATA command pass through(12)/Blank 
a1 06 20 da 00 00 4f c2 00 b0 00 00
[ 6217.720607] perf interrupt took too long (5053 > 5000), lowering 
kernel.perf_event_max_sample_rate to 25000
[ 6631.699961] sd 7:0:0:0: [sdc] tag#0 FAILED Result: hostbyte=DID_ERROR 
driverbyte=DRIVER_SENSE
[ 6631.699969] sd 7:0:0:0: [sdc] tag#0 Sense Key : Hardware Error [current] 
[descriptor] 
[ 6631.699973] sd 7:0:0:0: [sdc] tag#0 Add. Sense: No additional sense 
information
[ 6631.699978] sd 7:0:0:0: [sdc] tag#0 CDB: ATA command pass through(16) 85 06 
20 00 00 00 00 00 00 00 00 00 00 00 e5 00
[ 6632.179875] sd 7:0:0:0: [sdc] tag#0 FAILED Result: hostbyte=DID_ERROR 
driverbyte=DRIVER_SENSE
[ 6632.179884] sd 7:0:0:0: [sdc] tag#0 Sense Key : Hardware Error [current] 
[descriptor] 
[ 6632.179889] sd 7:0:0:0: [sdc] tag#0 Add. Sense: No additional sense 
information
[ 6632.179895] sd 7:0:0:0: [sdc] tag#0 CDB: ATA command pass through(12)/Blank 
a1 06 20 da 00 00 4f c2 00 b0 00 00
[ 7238.669972] sd 7:0:0:0: [sdc] tag#0 FAILED Result: hostbyte=DID_ERROR 
driverbyte=DRIVER_SENSE
[ 7238.669981] sd 7:0:0:0: [sdc] tag#0 Sense Key : Hardware Error [current] 
[descriptor] 
[ 7238.669985] sd 7:0:0:0: [sdc] tag#0 Add. Sense: No additional sense 
information
[ 7238.669990] sd 7:0:0:0: [sdc] tag#0 CDB: ATA command pass through(16) 85 06 
20 00 00 00 00 00 00 00 00 00 00 00 e5 00
[ 7238.794856] sd 7:0:0:0: [sdc] tag#0 FAILED Result: hostbyte=DID_ERROR 
driverbyte=DRIVER_SENSE
[ 7238.794863] sd 7:0:0:0: [sdc] tag#0 Sense Key : Hardware Error [current] 
[descriptor] 
[ 7238.794867] sd 7:0:0:0: [sdc] tag#0 Add. Sense: No additional sense 
information
[ 7238.794871] sd 7:0:0:0: [sdc] tag#0 CDB: ATA command pass through(12)/Blank 
a1 06 20 da 00 00 4f c2 00 b0 00 00


Now, i'm not a kernel/SATA subsystem expert, but this strongly smells as the 
redhat bug and this problem are closely related.

I'm not sure why Alan Stern refuses to look at this, and only offers patches to 
hide the error.
There's clearly something different in this kernel (not sure how far it dates, 
but clearly it's not in 3.19) that doesnt let the disks sleep. And this is a 
SERIOUS regression.

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  Unmounted USB drives wake up on 16.04

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-16 Thread paoletto
also, on 16.04, in addition to the above messages, the drive not only
does not go to standby (with the led blinking regularly), but it also
does not spin down. Tested with 3 different 16.04 (2 ubuntus and one kde
neon) on 2 different systems

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-16 Thread paoletto
and, by the way, this is the kind of messages that flood dmesg:

[  118.189091] sd 7:0:0:0: [sdc] tag#0 FAILED Result: hostbyte=DID_ERROR 
driverbyte=DRIVER_SENSE
[  118.189101] sd 7:0:0:0: [sdc] tag#0 Sense Key : Hardware Error [current] 
[descriptor] 
[  118.189106] sd 7:0:0:0: [sdc] tag#0 Add. Sense: No additional sense 
information
[  118.189112] sd 7:0:0:0: [sdc] tag#0 CDB: ATA command pass through(16) 85 06 
20 00 00 00 00 00 00 00 00 00 00 40 e5 00
[  118.190080] sd 7:0:0:0: [sdc] tag#0 FAILED Result: hostbyte=DID_ERROR 
driverbyte=DRIVER_SENSE
[  118.190086] sd 7:0:0:0: [sdc] tag#0 Sense Key : Hardware Error [current] 
[descriptor] 
[  118.190090] sd 7:0:0:0: [sdc] tag#0 Add. Sense: No additional sense 
information
[  118.190095] sd 7:0:0:0: [sdc] tag#0 CDB: ATA command pass through(16) 85 06 
20 00 00 00 00 00 00 00 00 00 00 40 98 00

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  Unmounted USB drives wake up on 16.04

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-16 Thread paoletto
Updated the description: I tested with 14.04 and as expected everything
goes to sleep when it should and stays sleeping.

I have the serious fear this is a regression in the kernel SATA subsystem.
HOWEVER, i'm willing to test it more on 16.04.

Could someone point me at a super stripped-down version of 16.04 where one can 
be absolutely certain there is no userspace daemon waking up the drives?
So that it would be possible to isolate the issue being a regression in the 
kernel or not

** Description changed:

  On Ubuntu 16.04, if i plug in a USB drive, then unmount it (eject
  button) in nautilus, then force it to sleep (hdparm -y), the drive
  reports to be in standby:
  
  hdparm -C /dev/sdd
  
  /dev/sdd:
   drive state is:  standby
  
  However, after some time during which i have not tried to access the
  drive, the drive seems to spin up again, and reports to be active again:
  
  hdparm -C /dev/sdd
  
  /dev/sdd:
   drive state is:  active/idle
  
  I have been researching on google, askubuntu, irc, but apparently nobody
  has been able to tell what is that wakes up the drive. Everybody say
  that if the drive is unmounted, it should stay sleeping.
  
  Note: I also tried to add the drive partitions in fstab, so to force gvfs to 
ignore the drive.
  Even this failed to keep the drive sleeping.
  
  I have not been able to test this on 14.04 yet, but 14.04 successfully
  keeps internal SATA drives asleep even when mounted unless i explicitly
  access them.
  
  One additional question i would have, at this point, is also whether there is 
some tool to check what process tries to access the device.
  Or some sort of tcpdump for SATA..
+ 
+ *UPDATE*
+ I managed to test this on 14.04, and as expected, the disk spins down almost 
immediately, and stays spun down, and after approximately half hour (maybe 
less) it goes in standby (disk led blinking regularly: http://gph.is/2yKy20M)
+ and stays like that.
+ Also, unlike 16.04, dmesg stays clean without repeating messages about 
meaningless driver sense errors

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-07 Thread paoletto
can it be related to
https://bugzilla.redhat.com/show_bug.cgi?id=1351305#c36 ?

** Bug watch added: Red Hat Bugzilla #1351305
   https://bugzilla.redhat.com/show_bug.cgi?id=1351305

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-06 Thread paoletto
Ok, so i managed to start btrace when i saw the disk sleeping and stopped after 
it woke up:
http://paste.ubuntu.com/26128577/

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-06 Thread paoletto
oh, and 14.04 disks stay mounted (just not accessed)

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-06 Thread paoletto
to compare, this is what i got on the 14.04 where unmounted  HDs stay
standby

http://paste.ubuntu.com/26128324/

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-06 Thread paoletto
Thank you for the suggestion!

So i tried it out, on the unmounted usb drive, and this is what i got:

http://paste.ubuntu.com/26128246/

the fear is that it might not (only) be some userspace daemon to keep the drive 
alive..
But it doesn't seem to me that it is easy to understand what's going on, even 
with btrace/blktrace..

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-12-06 Thread Phillip Susi
You can use blktrace to see who is accessing the drive.  My first
suspect would be udisksd so you might try killing that process and see
if that makes it go away.

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-11-23 Thread Sebastien Bacher
Brian, that doesn't seem a nautilus issue

** Package changed: nautilus (Ubuntu) => ubuntu

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-11-23 Thread paoletto
Nobody that is able to even reproduce this?

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Title:
  Unmounted USB drives wake up on 16.04

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-11-20 Thread Brian Murray
** Tags added: xenial

** Package changed: ubuntu => nautilus (Ubuntu)

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Title:
  Unmounted USB drives wake up on 16.04

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-11-18 Thread paoletto
yes, of course there's no source package to blame. Or, at least, i donno
which one it would be..

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  Unmounted USB drives wake up on 16.04

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[Bug 1733068] Re: Unmounted USB drives wake up on 16.04

2017-11-18 Thread Ubuntu Foundations Team Bug Bot
Thank you for taking the time to report this bug and helping to make
Ubuntu better.  It seems that your bug report is not filed about a
specific source package though, rather it is just filed against Ubuntu
in general.  It is important that bug reports be filed about source
packages so that people interested in the package can find the bugs
about it.  You can find some hints about determining what package your
bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage.
You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit
https://bugs.launchpad.net/ubuntu/+bug/1733068/+editstatus and add the
package name in the text box next to the word Package.

[This is an automated message.  I apologize if it reached you
inappropriately; please just reply to this message indicating so.]

** Tags added: bot-comment

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Title:
  Unmounted USB drives wake up on 16.04

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