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commit f3745728bc254892da4c569ba3fd8801895f3524
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Author: Eric Sandeen <sandeen@redhat.com>
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Date: Sun Mar 6 21:51:23 2016 -0500
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resize2fs: clear uninit BG if allocating from new group
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If resize2fs_get_alloc_block() allocates from a BLOCK_UNINIT group, we
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need to make sure that the UNINIT flag is cleared on both file system
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structures which are maintained by resize2fs. This causes the
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modified bitmaps to not get written out, which leads to post-resize2fs
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e2fsck errors; used blocks in UNINIT groups, not marked in the block
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bitmap. This was seen on r_ext4_small_bg.
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This patch uses clear_block_uninit() to clear the flag,
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and my problem goes away.
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Signed-off-by: Eric Sandeen <sandeen@redhat.com>
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Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
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Reviewed-by: Andreas Dilger <adilger@dilger.ca>
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Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Index: e2fsprogs-1.42.9/lib/ext2fs/alloc.c
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===================================================================
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--- e2fsprogs-1.42.9.orig/lib/ext2fs/alloc.c
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+++ e2fsprogs-1.42.9/lib/ext2fs/alloc.c
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@@ -27,6 +27,22 @@
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#include "ext2fs.h"
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/*
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+ * Clear the uninit block bitmap flag if necessary
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+ */
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+void ext2fs_clear_block_uninit(ext2_filsys fs, dgrp_t group)
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+{
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+ if (!(ext2fs_bg_flags_test(fs, group, EXT2_BG_BLOCK_UNINIT)))
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+ return;
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+
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+ /* uninit block bitmaps are now initialized in read_bitmaps() */
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+
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+ ext2fs_bg_flags_clear(fs, group, EXT2_BG_BLOCK_UNINIT);
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+ ext2fs_group_desc_csum_set(fs, group);
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+ ext2fs_mark_super_dirty(fs);
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+ ext2fs_mark_bb_dirty(fs);
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+}
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+
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+/*
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* Check for uninit block bitmaps and deal with them appropriately
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*/
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static void check_block_uninit(ext2_filsys fs, ext2fs_block_bitmap map,
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Index: e2fsprogs-1.42.9/lib/ext2fs/ext2fs.h
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===================================================================
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--- e2fsprogs-1.42.9.orig/lib/ext2fs/ext2fs.h
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+++ e2fsprogs-1.42.9/lib/ext2fs/ext2fs.h
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@@ -639,6 +639,7 @@ static inline int ext2fs_needs_large_fil
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}
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/* alloc.c */
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+extern void ext2fs_clear_block_uninit(ext2_filsys fs, dgrp_t group);
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extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
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ext2fs_inode_bitmap map, ext2_ino_t *ret);
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extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
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Index: e2fsprogs-1.42.9/resize/resize2fs.c
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===================================================================
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--- e2fsprogs-1.42.9.orig/resize/resize2fs.c
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+++ e2fsprogs-1.42.9/resize/resize2fs.c
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@@ -1196,6 +1196,7 @@ static errcode_t resize2fs_get_alloc_blo
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{
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ext2_resize_t rfs = (ext2_resize_t) fs->priv_data;
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blk64_t blk;
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+ int group;
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blk = get_new_block(rfs);
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if (!blk)
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@@ -1208,6 +1209,12 @@ static errcode_t resize2fs_get_alloc_blo
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ext2fs_mark_block_bitmap2(rfs->old_fs->block_map, blk);
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ext2fs_mark_block_bitmap2(rfs->new_fs->block_map, blk);
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+
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+ group = ext2fs_group_of_blk2(rfs->old_fs, blk);
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+ ext2fs_clear_block_uninit(rfs->old_fs, group);
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+ group = ext2fs_group_of_blk2(rfs->new_fs, blk);
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+ ext2fs_clear_block_uninit(rfs->new_fs, group);
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+
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*ret = (blk64_t) blk;
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return 0;
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}
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