This was fixed for ext3 with: e6d8fb3 ext3: Count internal journal as bsddf overhead in ext3_statfs but was never fixed for ext4. With a large external journal and no used disk blocks, df comes out negative without this, as journal blocks are added to the overhead & subtracted from used blocks unconditionally. Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx> --- ps: since this is stored in the on-disk superblock now, I'm not sure how to fix up old filesystems, or if it matters much. diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 2c9e686..9674578 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3338,8 +3338,8 @@ int ext4_calculate_overhead(struct super_block *sb) memset(buf, 0, PAGE_SIZE); cond_resched(); } - /* Add the journal blocks as well */ - if (sbi->s_journal) + /* Add the internal journal blocks as well */ + if (sbi->s_journal && !sbi->journal_bdev) overhead += EXT4_NUM_B2C(sbi, sbi->s_journal->j_maxlen); sbi->s_overhead = overhead; -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
