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OpenZFS 7072 - zfs fails to expand if lun added when os is in shutdown state

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Authored by: George Wilson <george.wilson@delphix.com>
Reviewed by: Igor Kozhukhov <ikozhukhov@gmail.com>
Reviewed by: Dan Kimmel <dan.kimmel@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Reviewed by: Alex Reece <alex@delphix.com>
Approved by: Dan McDonald <danmcd@omniti.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported-by: George Melikov <mail@gmelikov.ru>

OpenZFS-issue: https://www.illumos.org/issues/7072
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/c39a2aa
Closes #5694 

Porting notes:
- vdev.c: 'vdev_get_stats' changes are moved to 'vdev_get_stats_ex'.
- vdev_disk.c: ignored, Linux specific code is different.
This commit is contained in:
George Melikov 2017-02-02 00:14:02 +03:00 committed by Brian Behlendorf
parent 3b6425cb5b
commit 0f676dc228
2 changed files with 19 additions and 1 deletions
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8
module/zfs/metaslab.c
View File

@ -413,7 +413,13 @@ metaslab_class_expandable_space(metaslab_class_t *mc)
continue;
}
space += tvd->vdev_max_asize - tvd->vdev_asize;
/*
* Calculate if we have enough space to add additional
* metaslabs. We report the expandable space in terms
* of the metaslab size since that's the unit of expansion.
*/
space += P2ALIGN(tvd->vdev_max_asize - tvd->vdev_asize,
1ULL << tvd->vdev_ms_shift);
}
spa_config_exit(mc->mc_spa, SCL_VDEV, FTAG);
return (space);

12
module/zfs/vdev.c
View File

@ -2900,6 +2900,7 @@ vdev_get_stats_ex_impl(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx)
void
vdev_get_stats_ex(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx)
{
vdev_t *tvd = vd->vdev_top;
mutex_enter(&vd->vdev_stat_lock);
if (vs) {
bcopy(&vd->vdev_stat, vs, sizeof (*vs));
@ -2909,6 +2910,17 @@ vdev_get_stats_ex(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx)
if (vd->vdev_ops->vdev_op_leaf)
vs->vs_rsize += VDEV_LABEL_START_SIZE +
VDEV_LABEL_END_SIZE;
/*
* Report expandable space on top-level, non-auxillary devices
* only. The expandable space is reported in terms of metaslab
* sized units since that determines how much space the pool
* can expand.
*/
if (vd->vdev_aux == NULL && tvd != NULL) {
vs->vs_esize = P2ALIGN(
vd->vdev_max_asize - vd->vdev_asize,
1ULL << tvd->vdev_ms_shift);
}
vs->vs_esize = vd->vdev_max_asize - vd->vdev_asize;
if (vd->vdev_aux == NULL && vd == vd->vdev_top &&
!vd->vdev_ishole) {