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zed: detect and offline physically removed devices

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This commit adds a new test case to the ZFS Test Suite to verify ZED
can detect when a device is physically removed from a running system:
the device will be offlined if a spare is not available in the pool.

We implement this by using the existing libudev functionality and
without relying solely on the FM kernel module capabilities which have
been observed to be unreliable with some kernels.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Don Brady <don.brady@delphix.com>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #1537
Closes #7926
This commit is contained in:
loli10K
2018-09-18 23:45:52 +02:00
committed by Brian Behlendorf
parent 13c59bb76b
commit d48091de81
11 changed files with 341 additions and 43 deletions
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module/zfs/vdev.c
+1
View File
@@ -3424,6 +3424,7 @@ vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, vdev_state_t *newstate)
for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent)
pvd->vdev_expanding = !!((flags & ZFS_ONLINE_EXPAND) ||
spa->spa_autoexpand);
vd->vdev_expansion_time = gethrestime_sec();
}
vdev_reopen(tvd);
module/zfs/vdev_label.c
+4
View File
@@ -515,6 +515,10 @@ vdev_config_generate(spa_t *spa, vdev_t *vd, boolean_t getstats,
if (vd->vdev_crtxg)
fnvlist_add_uint64(nv, ZPOOL_CONFIG_CREATE_TXG, vd->vdev_crtxg);
if (vd->vdev_expansion_time)
fnvlist_add_uint64(nv, ZPOOL_CONFIG_EXPANSION_TIME,
vd->vdev_expansion_time);
if (flags & VDEV_CONFIG_MOS) {
if (vd->vdev_leaf_zap != 0) {
ASSERT(vd->vdev_ops->vdev_op_leaf);