2 Commits

Author	SHA1	Message	Date
Heinz Mauelshagen	48778bc503	lvconvert: add new reporting fields for reshaping ... During an ongoing reshape, the MD kernel runtime reads stripes relative to data_offset and starts storing the reshaped stripes (with new raid layout and/or new stripesize and/or new number of stripes) relative to new_data_offset. This is to avoid writing over any data in place which is non-atomic by nature and thus be recoverable without data loss in the transition. MD uses the term out-of-place reshaping for it. There's 2 other areas we don't have report capability for: - number of data stripes vs. total stripes (e.g. raid6 with 7 stripes toal has 5 data stripes) - number of (rotating) parity/syndrome chunks (e.g. raid6 with 7 stripes toal has 2 parity chunks; one per stripe for P-Syndrome and another one for Q-Syndrome) Thus, add the following reportable keys: - reshape_len (in current units) - reshape_len_le (in logical extents) - data_offset (in sectors) - new_data_offset ( " ) - data_stripes - parity_chunks Enhance lvchange-raid.sh, lvconvert-raid-reshape-linear_to_striped.sh, lvconvert-raid-reshape-striped_to_linear.sh, lvconvert-raid-reshape.sh and lvconvert-raid-takeover.sh to make use of new keys. Related: rhbz834579 Related: rhbz1191935 Related: rhbz1191978	2017-03-01 18:50:35 +01:00
Heinz Mauelshagen	76f60cc430	lvconvert: add missed new test scripts for reshaping ... Add aforementioned but forgotten new test scripts lvconvert-raid-reshape-linear_to_striped.sh, lvconvert-raid-reshape-striped_to_linear.sh and lvconvert-raid-reshape.sh Those presume dm-raid target version 1.10.2 provided by a following kernel patch. Related: rhbz834579 Related: rhbz1191935 Related: rhbz1191978	2017-02-24 05:20:59 +01:00