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Vdev Properties Feature

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Add properties, similar to pool properties, to each vdev.
This makes use of the existing per-vdev ZAP that was added as
part of device evacuation/removal.

A large number of read-only properties are exposed,
many of the members of struct vdev_t, that provide useful
statistics.

Adds support for read-only "removing" vdev property.
Adds the "allocating" property that defaults to "on" and
can be set to "off" to prevent future allocations from that
top-level vdev.

Supports user-defined vdev properties.
Includes support for properties.vdev in SYSFS.

Co-authored-by: Allan Jude <allan@klarasystems.com>
Co-authored-by: Mark Maybee <mark.maybee@delphix.com>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Mark Maybee <mark.maybee@delphix.com>
Signed-off-by: Allan Jude <allan@klarasystems.com>
Closes #11711
This commit is contained in:
Allan Jude
2021-11-30 09:46:25 -05:00
committed by GitHub
parent 5f64bf7fde
commit 2a673e76a9
33 changed files with 2746 additions and 243 deletions
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module/zfs/zio.c
+1 -1
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@@ -3755,7 +3755,7 @@ zio_vdev_io_start(zio_t *zio)
* Note: the code can handle other kinds of writes,
* but we don't expect them.
*/
if (zio->io_vd->vdev_removing) {
if (zio->io_vd->vdev_noalloc) {
ASSERT(zio->io_flags &
(ZIO_FLAG_PHYSICAL | ZIO_FLAG_SELF_HEAL |
ZIO_FLAG_RESILVER | ZIO_FLAG_INDUCE_DAMAGE));