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https://github.com/kdave/btrfs-progs
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9be33f558c
The checksum conversion is still experimental and still does not convert all filesystems correctly. Do not use on valuable data. Previous implementation copied the UUID conversion which was not a good base for the checksum conversion so it left out basically all trees except extent and checksum. This update adds the base for the required safety features: - let the old csum tree intact until the full conversion is done (ie. all data are still verifiable) - add on-disk status tracking item, this should keep the from/to checksum conversion, last generation to catch potential updates of the underlying filesystem if conversion is interrupted and the filesystem mounted - convert most of the fundamental trees, the subvolumes, tree log and relocation trees are not converted - trees are converted in-place to avoid potentially running out of space but this might be better done by transaction protection with a temporary tree Known issues: - not all trees are converted - not all checksums are correctly inserted into the new tree and reading the files leads to EIO Issue: #438 Signed-off-by: David Sterba <dsterba@suse.com>
35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef __BTRFS_TUNE_H__
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#define __BTRFS_TUNE_H__
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struct btrfs_root;
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struct btrfs_fs_info;
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int update_seeding_flag(struct btrfs_root *root, const char *device, int set_flag, int force);
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int check_unfinished_fsid_change(struct btrfs_fs_info *fs_info,
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uuid_t fsid_ret, uuid_t chunk_id_ret);
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int change_uuid(struct btrfs_fs_info *fs_info, const char *new_fsid_str);
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int set_metadata_uuid(struct btrfs_root *root, const char *uuid_string);
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int convert_to_bg_tree(struct btrfs_fs_info *fs_info);
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int rewrite_checksums(struct btrfs_fs_info *fs_info, int csum_type);
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#endif
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