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Completely skip cache flushing for not supporting log devices.

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MFC after:	2 weeks
Sponsored by:	iXsystems, Inc.
This commit is contained in:
mav 2017-03-02 07:50:06 +00:00
parent 55d5acd163
commit 3ef0c861a5
1 changed files with 7 additions and 5 deletions
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12
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c
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@ -838,7 +838,7 @@ zil_flush_vdevs(zilog_t *zilog)
avl_tree_t *t = &zilog->zl_vdev_tree;
void *cookie = NULL;
zil_vdev_node_t *zv;
zio_t *zio;
zio_t *zio = NULL;
ASSERT(zilog->zl_writer);
@ -851,12 +851,13 @@ zil_flush_vdevs(zilog_t *zilog)
spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
zio = zio_root(spa, NULL, NULL, ZIO_FLAG_CANFAIL);
while ((zv = avl_destroy_nodes(t, &cookie)) != NULL) {
vdev_t *vd = vdev_lookup_top(spa, zv->zv_vdev);
if (vd != NULL)
if (vd != NULL && !vd->vdev_nowritecache) {
if (zio == NULL)
zio = zio_root(spa, NULL, NULL, ZIO_FLAG_CANFAIL);
zio_flush(zio, vd);
}
kmem_free(zv, sizeof (*zv));
}
@ -864,7 +865,8 @@ zil_flush_vdevs(zilog_t *zilog)
* Wait for all the flushes to complete. Not all devices actually
* support the DKIOCFLUSHWRITECACHE ioctl, so it's OK if it fails.
*/
(void) zio_wait(zio);
if (zio)
(void) zio_wait(zio);
spa_config_exit(spa, SCL_STATE, FTAG);
}