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Add separate field for indicating that spa is in middle of split 

By default it's not possible to open a device already owned by an
active vdev. It's necessary to make an exception to this for vdev
split. The FreeBSD platform code will make an exception if
spa_is splitting is set to to true.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Matt Macy <mmacy@FreeBSD.org>
Closes #10178
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Matthew Macy 2020-04-09 09:59:31 -07:00 committed by GitHub
parent 68dde63d13
commit 8b27e08ed8
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2 changed files with 3 additions and 0 deletions
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1
include/sys/spa_impl.h
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@ -216,6 +216,7 @@ struct spa {
spa_load_state_t spa_load_state; /* current load operation */
boolean_t spa_indirect_vdevs_loaded; /* mappings loaded? */
boolean_t spa_trust_config; /* do we trust vdev tree? */
boolean_t spa_is_splitting; /* in the middle of a split? */
spa_config_source_t spa_config_source; /* where config comes from? */
uint64_t spa_import_flags; /* import specific flags */
spa_taskqs_t spa_zio_taskq[ZIO_TYPES][ZIO_TASKQ_TYPES];

2
module/zfs/spa.c
View File

@ -7477,6 +7477,7 @@ spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config,
list_destroy(&vd_trim_list);
newspa->spa_config_source = SPA_CONFIG_SRC_SPLIT;
newspa->spa_is_splitting = B_TRUE;
/* create the new pool from the disks of the original pool */
error = spa_load(newspa, SPA_LOAD_IMPORT, SPA_IMPORT_ASSEMBLE);
@ -7554,6 +7555,7 @@ spa_vdev_split_mirror(spa_t *spa, char *newname, nvlist_t *config,
spa_history_log_internal(newspa, "split", NULL,
"from pool %s", spa_name(spa));
newspa->spa_is_splitting = B_FALSE;
kmem_free(vml, children * sizeof (vdev_t *));
/* if we're not going to mount the filesystems in userland, export */