Am 04.09.2018 um 04:25 schrieb Theodore Ts'o:
> diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
> index e5fb38451a73..33655a6eff4d 100644
> --- a/fs/ext4/resize.c
> +++ b/fs/ext4/resize.c
> @@ -1986,6 +1986,26 @@ int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count)
> }
> }
>
> + /*
> + * Make sure the last group has enough space so that it's
> + * guaranteed to have enough space for all metadata blocks
> + * that it might need to hold. (We might not need to store
> + * the inode table blocks in the last block group, but there
> + * will be cases where this might be needed.)
> + */
> + if ((ext4_group_first_block_no(sb, n_group) +
> + ext4_group_overhead_blocks(sb, n_group) + 2 +
> + sbi->s_itb_per_group + sbi->s_cluster_ratio) >= n_blocks_count) {
> + n_blocks_count = ext4_group_first_block_no(sb, n_group);
> + n_group--;
> + n_blocks_count_retry = 0;
> + if (resize_inode) {
> + iput(resize_inode);
> + resize_inode = NULL;
> + }
> + goto retry;
> + }
> +
> /* extend the last group */
> if (n_group == o_group)
> add = n_blocks_count - o_blocks_count;
>
I successfully tested your fix in our system test where the problem was
initially found.
Thank you,
Torsten
