← Back to team overview

kernel-packages team mailing list archive

[Bug 1454158] Re: When SCSI bus hangs SES driver indefinitely block any process accessing LED status for devices


Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.1 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.1-rc3-vivid/

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.

   When SCSI bus hangs SES driver indefinitely block any process
  accessing LED status for devices

Status in linux package in Ubuntu:

Bug description:
  Ubuntu 14.04, 3.13.0-40-generic


  SCSI (mpt2sas, with few enclosures with SATA disks.

  One of enclosures is hung and do not reply to any requests (including reset). All sg_* command to any device behind hanged enclosure, including enclosure itself, are stuck in the 'D' state.

  Access to sysfs place processes in 'D' state:

  cat /sys/class/enclosure/5\:0\:46\:0/Slot\ 01/locate

  root       588  0.0  0.0   7152   612 pts/6    D+   08:40   0:00 cat
  /sys/class/enclosure/5:0:46:0/Slot 01/locate

  Proposed solution: Add timeout to ses devices independent of HBA

  Rationale: Accessing to sysfs do not expect to be 'real IO' with
  chances to hung in 'D' forever.

  Kernel bugzilla bug: https://bugzilla.kernel.org/show_bug.cgi?id=98121

To manage notifications about this bug go to: