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Skip spacemaps reading in case of pool readonly import

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The only zdb utility require to read metaslab-related data during
read-only pool import because of spacemaps validation. Add global
variable which will allow zdb read spacemaps in case of readonly
import mode.

Reviewed-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Fedor Uporov <fuporov.vstack@gmail.com>
Closes #9095
Closes #12687
This commit is contained in:
Fedor Uporov
2021-11-09 12:50:39 -08:00
committed by GitHub
parent 345196be18
commit e39fe05b69
5 changed files with 24 additions and 2 deletions
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module/zfs/vdev.c
+6
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@@ -3142,6 +3142,12 @@ vdev_dtl_load(vdev_t *vd)
if (vd->vdev_ops->vdev_op_leaf && vd->vdev_dtl_object != 0) {
ASSERT(vdev_is_concrete(vd));
/*
* If the dtl cannot be sync'd there is no need to open it.
*/
if (spa->spa_mode == SPA_MODE_READ && !spa->spa_read_spacemaps)
return (0);
error = space_map_open(&vd->vdev_dtl_sm, mos,
vd->vdev_dtl_object, 0, -1ULL, 0);
if (error)