Dear Neil, Thanks for your good works. One query about current grow supporting status: as the raid wiki show : the RAID level 1/4/5/6 array can be grown . In my test I can grow raid 1 add disk or remove disk through mdadm grow, but change level from 1 to 4 or 5 will fail. the simaliar command work for change level between 4/5/6, change 1 to 10 fail too. My kernel version is 3.2.15. mdadm version 3.2.3. Jack 2012/4/17 NeilBrown <neilb@xxxxxxx>: > > The following series has just been added to my for-next queue > and so should be in 3.5. > git://neil.brown.name/md for-next > git://github.com/neilbrown/linux.git md/for-next > > It allows md to resize a bitmap on an active array. This > means that arrays can now be reshaped without first removing the > bitmap. The bitmap is resized in-place. > > As always: review and testing would be greatly appreciated. > > NeilBrown > > --- > > NeilBrown (24): > md/raid5: Allow reshape while a bitmap is present. > md/raid10: resize bitmap when required during reshape. > md: allow array to be resized while bitmap is present. > md/bitmap: make sure reshape request are reflected in superblock. > md/bitmap: add bitmap_resize function to allow bitmap resizing. > md/bitmap: use DIV_ROUND_UP instead of open-code > md/bitmap: create a 'struct bitmap_counts' substructure of 'struct bitmap' > md/bitmap: make bitmap bitops atomic. > md/bitmap: make _page_attr bitops atomic. > md/bitmap: merge bitmap_file_unmap and bitmap_file_put. > md/bitmap: remove async freeing of bitmap file. > md/bitmap: convert some spin_lock_irqsave to spin_lock_irq > md/bitmap: use set_bit, test_bit, etc for operation on bitmap->flags. > md/bitmap: remove single-bit manipulation on sb->state > md/bitmap: remove bitmap_mask_state > md/bitmap: move storage allocation from bitmap_load to bitmap_create. > md/bitmap: separate bitmap file allocation to its own function. > md/bitmap: store bytes in file rather than just in last page. > md/bitmap: move some fields of 'struct bitmap' into a 'storage' substruct. > md/bitmap: change *_page_attr() to take a page number, not a page. > md/bitmap: centralise allocation of bitmap file pages. > md/bitmap: allow a bitmap with no backing storage. > md/bitmap: add new 'space' attribute for bitmaps. > md/bitmap: disentangle two different 'pending' flags. > > > drivers/md/bitmap.c | 1089 +++++++++++++++++++++++++++++---------------------- > drivers/md/bitmap.h | 58 ++- > drivers/md/md.c | 53 ++ > drivers/md/md.h | 3 > drivers/md/raid1.c | 11 - > drivers/md/raid10.c | 47 +- > drivers/md/raid5.c | 20 + > 7 files changed, 754 insertions(+), 527 deletions(-) > > -- > Signature > > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
