Eric Lee / smarc-fsl-linux-kernel

02 Nov, 2017

1 commit

04 May, 2017

1 commit

  • e5021876c   Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md ... Browse Code »

    Pull MD updates from Shaohua Li:

    - Add Partial Parity Log (ppl) feature found in Intel IMSM raid array
    by Artur Paszkiewicz. This feature is another way to close RAID5
    writehole. The Linux implementation is also available for normal
    RAID5 array if specific superblock bit is set.

    - A number of md-cluser fixes and enabling md-cluster array resize from
    Guoqing Jiang

    - A bunch of patches from Ming Lei and Neil Brown to rewrite MD bio
    handling related code. Now MD doesn't directly access bio bvec,
    bi_phys_segments and uses modern bio API for bio split.

    - Improve RAID5 IO pattern to improve performance for hard disk based
    RAID5/6 from me.

    - Several patches from Song Liu to speed up raid5-cache recovery and
    allow raid5 cache feature disabling in runtime.

    - Fix a performance regression in raid1 resync from Xiao Ni.

    - Other cleanup and fixes from various people.

    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md: (84 commits)
    md/raid10: skip spare disk as 'first' disk
    md/raid1: Use a new variable to count flighting sync requests
    md: clear WantReplacement once disk is removed
    md/raid1/10: remove unused queue
    md: handle read-only member devices better.
    md/raid10: wait up frozen array in handle_write_completed
    uapi: fix linux/raid/md_p.h userspace compilation error
    md-cluster: Fix a memleak in an error handling path
    md: support disabling of create-on-open semantics.
    md: allow creation of mdNNN arrays via md_mod/parameters/new_array
    raid5-ppl: use a single mempool for ppl_io_unit and header_page
    md/raid0: fix up bio splitting.
    md/linear: improve bio splitting.
    md/raid5: make chunk_aligned_read() split bios more cleanly.
    md/raid10: simplify handle_read_error()
    md/raid10: simplify the splitting of requests.
    md/raid1: factor out flush_bio_list()
    md/raid1: simplify handle_read_error().
    Revert "block: introduce bio_copy_data_partial"
    md/raid1: simplify alloc_behind_master_bio()
    ...

    Linus Torvalds
     

18 Mar, 2017

1 commit

17 Mar, 2017

1 commit

  • 818da59f9   md-cluster: add the support for resize ... Browse Code »

    To update size for cluster raid, we need to make
    sure all nodes can perform the change successfully.
    However, it is possible that some of them can't do
    it due to failure (bitmap_resize could fail). So
    we need to consider the issue before we set the
    capacity unconditionally, and we use below steps
    to perform sanity check.

    1. A change the size, then broadcast METADATA_UPDATED
    msg.
    2. B and C receive METADATA_UPDATED change the size
    excepts call set_capacity, sync_size is not update
    if the change failed. Also call bitmap_update_sb
    to sync sb to disk.
    3. A checks other node's sync_size, if sync_size has
    been updated in all nodes, then send CHANGE_CAPACITY
    msg otherwise send msg to revert previous change.
    4. B and C call set_capacity if receive CHANGE_CAPACITY
    msg, otherwise pers->resize will be called to restore
    the old value.

    Reviewed-by: NeilBrown
    Signed-off-by: Guoqing Jiang
    Signed-off-by: Shaohua Li

    Guoqing Jiang
     

14 Feb, 2017

1 commit