From: Darrick J. Wong <djwong@xxxxxxxxxx>
If we're using an external log device and the caller doesn't give us a
lsunit, use the block device geometry (if present) to set it.
Signed-off-by: "Darrick J. Wong" <djwong@xxxxxxxxxx>
Reviewed-by: John Garry <john.g.garry@xxxxxxxxxx>
---
mkfs/xfs_mkfs.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/mkfs/xfs_mkfs.c b/mkfs/xfs_mkfs.c
index 8b946f3ef817da..b6de13cebc93ed 100644
--- a/mkfs/xfs_mkfs.c
+++ b/mkfs/xfs_mkfs.c
@@ -3615,7 +3615,8 @@ _("log stripe unit (%d) must be a multiple of the block size (%d)\n"),
}
/*
- * check that log sunit is modulo fsblksize or default it to dsunit.
+ * check that log sunit is modulo fsblksize; default it to dsunit for
+ * an internal log; or the log device stripe unit if it's external.
*/
if (lsunit) {
/* convert from 512 byte blocks to fs blocks */
@@ -3624,6 +3625,10 @@ _("log stripe unit (%d) must be a multiple of the block size (%d)\n"),
cfg->loginternal && cfg->dsunit) {
/* lsunit and dsunit now in fs blocks */
cfg->lsunit = cfg->dsunit;
+ } else if (cfg->sb_feat.log_version == 2 &&
+ !cfg->loginternal) {
+ /* use the external log device properties */
+ cfg->lsunit = DTOBT(ft->log.sunit, cfg->blocklog);
}
if (cfg->sb_feat.log_version == 2 &&
