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| author | Darrick J. Wong <djwong@kernel.org> | 2023-12-11 21:41:51 +0300 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2023-12-14 01:16:27 +0300 |
| commit | 578bd4ce7100ae34f98c6b0147fe75cfa0dadbac (patch) | |
| tree | 446409024968d5d652ea648da7f0ab1973708089 /fs/xfs/xfs_rtalloc.c | |
| parent | 18793e050504288345eb455a471677b57117bcc6 (diff) | |
| download | linux-578bd4ce7100ae34f98c6b0147fe75cfa0dadbac.tar.xz | |
xfs: recompute growfsrtfree transaction reservation while growing rt volume
While playing with growfs to create a 20TB realtime section on a
filesystem that didn't previously have an rt section, I noticed that
growfs would occasionally shut down the log due to a transaction
reservation overflow.
xfs_calc_growrtfree_reservation uses the current size of the realtime
summary file (m_rsumsize) to compute the transaction reservation for a
growrtfree transaction. The reservations are computed at mount time,
which means that m_rsumsize is zero when growfs starts "freeing" the new
realtime extents into the rt volume. As a result, the transaction is
undersized and fails.
Fix this by recomputing the transaction reservations every time we
change m_rsumsize.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/xfs/xfs_rtalloc.c')
| -rw-r--r-- | fs/xfs/xfs_rtalloc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c index 8feb58c6241c..0c9893b9f2a9 100644 --- a/fs/xfs/xfs_rtalloc.c +++ b/fs/xfs/xfs_rtalloc.c @@ -1038,6 +1038,9 @@ xfs_growfs_rt( nrsumblocks = xfs_rtsummary_blockcount(mp, nrsumlevels, nsbp->sb_rbmblocks); nmp->m_rsumsize = nrsumsize = XFS_FSB_TO_B(mp, nrsumblocks); + /* recompute growfsrt reservation from new rsumsize */ + xfs_trans_resv_calc(nmp, &nmp->m_resv); + /* * Start a transaction, get the log reservation. */ @@ -1124,6 +1127,8 @@ error_cancel: */ mp->m_rsumlevels = nrsumlevels; mp->m_rsumsize = nrsumsize; + /* recompute growfsrt reservation from new rsumsize */ + xfs_trans_resv_calc(mp, &mp->m_resv); error = xfs_trans_commit(tp); if (error) |