Eric Lee / smarc-fsl-linux-kernel

24 Jun, 2010

1 commit

  • e93f68a1f   md: fix handling of array level takeover that re-arranges devices. ... Browse Code »

    Most array level changes leave the list of devices largely unchanged,
    possibly causing one at the end to become redundant.
    However conversions between RAID0 and RAID10 need to renumber
    all devices (except 0).

    This renumbering is currently being done in the ->run method when the
    new personality takes over. However this is too late as the common
    code in md.c might already have invalidated some of the devices if
    they had a ->raid_disk number that appeared to high.

    Moving it into the ->takeover method is too early as the array is
    still active at that time and wrong ->raid_disk numbers could cause
    confusion.

    So add a ->new_raid_disk field to mdk_rdev_s and use it to communicate
    the new raid_disk number.
    Now the common code knows exactly which devices need to be renumbered,
    and which can be invalidated, and can do it all at a convenient time
    when the array is suspend.
    It can also update some symlinks in sysfs which previously were not be
    updated correctly.

    Reported-by: Maciej Trela
    Signed-off-by: NeilBrown

    NeilBrown
     

18 May, 2010

1 commit

16 Jun, 2009

1 commit

  • 070ec55d0   md: remove mddev_to_conf "helper" macro ... Browse Code »

    Having a macro just to cast a void* isn't really helpful.
    I would must rather see that we are simply de-referencing ->private,
    than have to know what the macro does.

    So open code the macro everywhere and remove the pointless cast.

    Signed-off-by: NeilBrown

    NeilBrown
     

31 Mar, 2009

2 commits