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[Bug 844099] Re: System fails to acknowledge changing of SD when rootfs is on a different device.

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Chase Qi <chase.qi@xxxxxxxxxx>
Date: Fri, 29 Aug 2014 06:16:56 -0000
Reply-to: Bug 844099 <844099@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

Migrated to bugzilla: https://bugs.linaro.org/show_bug.cgi?id=553

** Bug watch added: Linaro Bug Tracking System #553
   https://bugs.linaro.org/show_bug.cgi?id=553

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https://bugs.launchpad.net/bugs/844099

Title:
  System fails to acknowledge changing of SD when rootfs is on a
  different device.

Status in “linux-linaro-omap” package in Ubuntu:
  Confirmed
Status in “linux-meta-ti-omap4” package in Ubuntu:
  Confirmed

Bug description:
  On panda, booting is primarily from SD, even when the rootfs is on a
  different device (usb, nfs, etc).  This device should be able to be
  swapped out after the system is fully booted, as the device is no
  longer mounted.  When trying to update an SD for a different system
  after swapping SD cards, the system refuses to recognize the new SD,
  giving "error - 110 ..." messages in dmesg.  This even happens with
  "sudo partprobe /dev/mmcblk0".

  Steps to reproduce:
  Use netinstall to install rootfs on usb drive (4G min).  Netinstall will configure SD with x-loader/u-boot, kernel, initrd, and a u-boot script with kernel boot params. (Currently need to work around bug 806751 by manually copying netinstall files to SD 1st partition >30M).
  Reboot to newly installed system.
  Verify /dev/mmcblk0 is not in use.
  Swap SD cards.  Try to access new SD card.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: linux-omap4 3.0.0.1203.3
  ProcVersionSignature: User Name 3.0.0-1203.8-omap4 3.0.1
  Uname: Linux 3.0.0-1203-omap4 armv7l
  Architecture: armel
  Date: Wed Sep  7 09:56:41 2011
  ProcEnviron:
   SHELL=/bin/bash
   LANG=en_US,UTF-8
   LANGUAGE=en_US:
  SourcePackage: linux-meta-ti-omap4
  UpgradeStatus: No upgrade log present (probably fresh install)

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