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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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include/sys/vdev_impl.h
+1
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@@ -344,6 +344,7 @@ struct vdev {
uint64_t vdev_leaf_zap;
hrtime_t vdev_mmp_pending; /* 0 if write finished */
uint64_t vdev_mmp_kstat_id; /* to find kstat entry */
uint64_t vdev_expansion_time; /* vdev's last expansion time */
/*
* For DTrace to work in userland (libzpool) context, these fields must