Hi, On Mon 18-02-13 01:22:08, Zheng Liu wrote: > Xfstests #68 will hang with data=journal in 3.8-rc7 and 'dev' branch. I > remember that there has a patch for ext4 to fix filesystem freeze bug > but I am not sure whether it can fix this bug and it has been applied > into 'dev' branch. So I file this bug here. Yes, I also recently hit this bug. I found that the root cause is that in data=journal mode there are dirty pages even after syncing the whole filesystem. I didn't yet found out why that happens but dirty page handling is complex in data=journal mode as pages get marked dirty at the moment transaction is committing and buffers are filed into checkpoint lists so I find it quite possible there is some case I didn't think about where syncing results in non-clean filesystem. Honza -- Jan Kara <jack@xxxxxxx> SUSE Labs, CR -- 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