On Thu, Feb 08, 2018 at 11:27:19AM +0800, Su Yue wrote: > This patchset can be fetched from my github: > https://github.com/Damenly/btrfs-progs/tree/lowmem > based on unmerged patchset whose cover: > [PATCH 0/3] btrfs-progs: Split original mode check to its own > Author: Qu Wenruo <wqu@xxxxxxxx> > > I'm sorry to send patches based on unmerged patch if it let you feel > uncomfortable. > I think the three patches from Qu are good enough so I send it before > my vacation. > > Patch[1-3] fix minor problems of lowmem repair. > > Patch[4-8] introduce two ways to avoid extents overwrite: > 1) Traverse trees and exclude all metadata blocks. > It's time-inefficient for large filesystems. > 2) Mark all existed chunks full, allocate new chunk for CoW and > records chunk start. > If the last allocated chunk is almost full, allocated a new one. > 2) is More efficient than 1). However, it can't handle situations > like no space(fsck/004). > Lowmem repair will try method 2 first and then method 1. > > Patch[9-17] remove parameters @trans in functions for lowmem repair. > They try to avoid extents overwrite if necessary and start > transactions by themselves. > > Patch[18] adds a test image. > Those patches are mainly for lowmem repair. Original mode is not > influenced. > > --- > Changlog: > v4->v3: > - Remove global enum extents_operation to simplify > avoid_extents_overwrite() and its cleanup. > - Rebase after work of check split. > > v3->v2: > - check_btrfs_root() returns FATAL_ERROR if check_fs_first_inode() > failed. Thanks Nikolay Borisov. > - Add function try_to_force_cow_in_new_chunk() and global u64 > varaiable to record start of the last allocated chunk. > - Remove unused EXTENTS_PIN in enum lowmem_extents_operation. > > v2->v1: > - Let @err in check_btrfs_root() record err bits but excluded > negative values. > - Do not delete a line of code to release path after extent item' > insertion in repair_extent_data_item(). > - Add patch[3]. > - Force CoW in new allocated chunk to avoid extents overwrite. > - Remove parameters @trans in check_chunks_and_extents_v2() and > related callees. > - Repair functions for lowmem mode call try_avoid_extents_overwrite() > and start transactions. > > Su Yue (18): > btrfs-progs: lowmem check: release path in repair_extent_data_item() > btrfs-progs: lowmem check: record returned errors after > walk_down_tree_v2() > btrfs-progs: lowmem check: assign @parent early in > repair_extent_data_item() > btrfs-progs: lowmem check: exclude extents of metadata blocks Patch 1-4 added to devel. > btrfs-progs: lowmem check: introduce mark/clear_block_groups_full() There were too many conflicts starting with this patch. Can you please refresh teh rest of the series and resend? For subject please use "btrfs-progs: check: lowmem: ..." and try to fix the typos in the changelogs. Thanks. > btrfs-progs: lowmem check: introduce try_force_cow_in_new_chunk() > btrfs-progs: lowmem check: introduce avoid_extents_overwrite() > btrfs-progs: lowmem check: exclude extents if init-extent-tree in > lowmem > btrfs-progs: lowmem check: start to remove parameters @trans in lowmem > btrfs-progs: lowmem check: remove parameter @trans of > delete_extent_item() > btrfs-progs: lowmem check: remove parameter @trans of > repair_chunk_item() > btrfs-progs: lowmem check: remove parameter @trans of > repair_extent_item() > btrfs-progs: lowmem check: remove parameter @trans of > check_leaf_items() > btrfs-progs: lowmem check: remove parameter @trans of > repair_tree_back_ref() > btrfs-progs: lowmem check: remove parameter @trans of > check_btrfs_root() > btrfs-progs: lowmem check: introduce repair_block_accounting() > btrfs-progs: lowmem check: end of removing parameters @trans in lowmem > btrfs-progs: fsck-tests: add image no extent with normal device size -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
