On Jul 11, 2007 19:30 +0530, Suzuki wrote: > Trying to resize a mounted ext3 filesystem fails due to small journal size. > > Background : > > The filesystem was created with default values, except blocksize = 4K on > a LV partition. Later we tried extended the partition to +16M and tried > to resize the fs using resize2fs, while it was mounted. > > While adding the new blockgroup, inside setup_new_group_blocks() we hit > the limit because we are requesting for a a credit value of 2 + > sbi->s_itb_per_group which in the case of the file system below is 1026 > while the max_transaction credits possible is 1024 for the fs. > > journal->j_maxlen = inode->i_size / blocksize = 16M/4K = 4K > > journal->j_max_transaction_buffers = journal->j_maxlen / 4 = 1K > > journal->j_max_transaction_buffers = 1024. > > Is this a supported operation ? If yes, what could be the best way to > fix it ? > > Resizing the journal is not supported at the moment :(. You can't do a journal resize online, but you can wait until your next outage and resize the journal at that time. Even a few extra blocks would be enough. I guess this is a corner case that hasn't been hit before. It might make sense to have the ext2fs_figure_journal_size() take this into account when making the filesystem? Cheers, Andreas -- Andreas Dilger Principal Software Engineer Cluster File Systems, Inc. - 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
