Changelog (v2):
* the limit_min logic was wrong and did not work, all other filters are locally
applied to the processed chunk, but for the limit_min we need to count all
filters first and then decide if we want to rebalance or not
Update to balance filters, intended for 4.4:
* new 'stripes=<range>' - process only stripes that cross given number of
devices, specified by a range
* updated 'limit=<range>' - previously a single number was accepted, it's a
range so now we can specify a minimum number of chunks to process
There will be more documentation about the use in the btrfs-progs patches, the
kernel side just applies the ranges. The update to 'limit' is backward
compatible, reuses the previous struct member.
Need the v2 btrfs-progs patchset.
Note to merging: there's a missing patch that actuall adds both filter flags
to the mask, however this patch[1] will supposedly be merged to 4.3-rc6.
Current integration is based on 4.3-rc5 so I can't send a branch containing
that without pulling unrelated patches. I'll send the patch independently so
you can decide how to apply it once your first 4.4 pull request gets merged.
[1] btrfs: check unsupported filters in balance arguments
(8eb934591f8bf584969454a658f629cd06e59f3a)
----------------------------------------------------------------
The following changes since commit 049e6dde7e57f0054fdc49102e7ef4830c698b46:
Linux 4.3-rc4 (2015-10-04 16:57:17 +0100)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git
dev/balance-filters
for you to fetch changes up to 9811b51815f9b5874832bbfa56a5171bac6aae7d:
btrfs: add balance filter for stripes (2015-10-16 15:50:00 +0200)
----------------------------------------------------------------
David Sterba (1):
btrfs: extend balance filter limit to take minimum and maximum
Gabríel Arthúr Pétursson (1):
btrfs: add balance filter for stripes
fs/btrfs/ctree.h | 23 ++++++++++++++---
fs/btrfs/volumes.c | 61 ++++++++++++++++++++++++++++++++++++++++++++++
fs/btrfs/volumes.h | 2 ++
include/uapi/linux/btrfs.h | 23 +++++++++++++++--
4 files changed, 104 insertions(+), 5 deletions(-)
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