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SubjectRe: [Possible REGRESSION, 4.16-rc4] Error updating SMART data during runtime and could not connect to lvmetad at some boot attempts
Date
Hans de Goede - 11.03.18, 15:37:
> Hi Martin,
>
> On 11-03-18 09:20, Martin Steigerwald wrote:
> > Hello.
> >
> > Since 4.16-rc4 (upgraded from 4.15.2 which worked) I have an issue
> > with SMART checks occassionally failing like this:
> >
> > smartd[28017]: Device: /dev/sdb [SAT], is in SLEEP mode, suspending checks
> > udisksd[24408]: Error performing housekeeping for drive
> > /org/freedesktop/UDisks2/drives/INTEL_SSDSA2CW300G3_[…]: Error updating
> > SMART data: Error sending ATA command CHECK POWER MODE: Unexpected sense
> > data returned:#0120000: 0e 09 0c 00 00 00 ff 00 00 00 00 00 00 00 50
> > 00 ..............P.#0120010: 00 00 00 00 00 00 00 00 00 00 00 00 00
> > 00 00 00 ................#012 (g-io-error-quark, 0) merkaba
> > udisksd[24408]: Error performing housekeeping for drive
> > /org/freedesktop/UDisks2/drives/Crucial_CT480M500SSD3_[…]: Error updating
> > SMART dat a: Error sending ATA command CHECK POWER MODE: Unexpected sense
> > data returned:#0120000: 01 00 1d 00 00 00 0e 09 0c 00 00 00 ff 00 00
> > 00 ................#0120010: 00 0 0 00 00 50 00 00 00 00 00 00 00
> > 00 00 00 00 ....P...........#012 (g-io-error-quark, 0)
> >
> > (Intel SSD is connected via SATA, Crucial via mSATA in a ThinkPad T520)
> >
> > However when I then check manually with smartctl -a | -x | -H the device
> > reports SMART data just fine.
> >
> > As smartd correctly detects that device is in sleep mode, this may be an
> > userspace issue in udisksd.
> >
> > Also at some boot attempts the boot hangs with a message like "could not
> > connect to lvmetad, scanning manually for devices". I use BTRFS RAID 1
> > on to LVs (each on one of the SSDs). A configuration that requires a
> > manual
> > adaption to InitRAMFS in order to boot (basically vgchange -ay before
> > btrfs device scan).
> >
> > I wonder whether that has to do with the new SATA LPM policy stuff, but as
> > I had issues with
> >
> > 3 => Medium power with Device Initiated PM enabled
> >
> > (machine did not boot, which could also have been caused by me
> > accidentally
> > removing all TCP/IP network support in the kernel with that setting)
> >
> > I set it back to
> >
> > CONFIG_SATA_MOBILE_LPM_POLICY=0
> >
> > (firmware settings)
>
> Right, so at that settings the LPM policy changes are effectively
> disabled and cannot explain your SMART issues.
>
> Still I would like to zoom in on this part of your bug report, because
> for Fedora 28 we are planning to ship with CONFIG_SATA_MOBILE_LPM_POLICY=3
> and AFAIK Ubuntu has similar plans.
>
> I suspect that the issue you were seeing with
> CONFIG_SATA_MOBILE_LPM_POLICY=3 were with the Crucial disk ? I've attached
> a patch for you to test, which disabled LPM for your model Crucial SSD (but
> keeps it on for the Intel disk) if you can confirm that with that patch you
> can run with
> CONFIG_SATA_MOBILE_LPM_POLICY=3 without issues that would be great.

With 4.16-rc5 with CONFIG_SATA_MOBILE_LPM_POLICY=3 the system successfully
booted three times in a row. So feel free to add tested-by.

Let´s see whether the blk_mq_terminate_expired or the smartd/udisks error
messages reappear with rc5. I still think they are a different issue.

Thanks,
--
Martin

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