On Tue, Aug 26, 2025 at 03:42:48PM +1000, Dave Chinner wrote: > > + /* > > + * Grow can change the device size. Mirror that into the buftarg. > > + */ > > + mp->m_ddev_targp->bt_nr_blocks = mp->m_sb.sb_dblocks; > > + if (mp->m_rtdev_targp && mp->m_rtdev_targp != mp->m_ddev_targp) > > + mp->m_rtdev_targp->bt_nr_blocks = mp->m_sb.sb_dblocks; > ^ > That's not right. Indeed. It reverts us to the current state without this patch if someone does a growfs :) > Perhaps we need some growfs crash/recovery tests to exercise this > code.... This code is exercises by the RT/zoned growfs tests. However as the only RT metadata buffer is at block 0 nothing will notice a wrong value here (which is also the reason why the current state of this that hardcodes the sb_dblocks check actually works).
