zpool: Add slot power control, print power status

Add `zpool` flags to control the slot power to drives.  This assumes
your SAS or NVMe enclosure supports slot power control via sysfs.

The new `--power` flag is added to `zpool offline|online|clear`:

    zpool offline --power <pool> <device>    Turn off device slot power
    zpool online --power <pool> <device>     Turn on device slot power
    zpool clear --power <pool> [device]      Turn on device slot power

If the ZPOOL_AUTO_POWER_ON_SLOT env var is set, then the '--power'
option is automatically implied for `zpool online` and `zpool clear`
and does not need to be passed.

zpool status also gets a --power option to print the slot power status.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Mart Frauenlob <AllKind@fastest.cc>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #15662
This commit is contained in:
Tony Hutter
2023-12-21 10:53:16 -08:00
committed by GitHub
parent 6930ecbb75
commit a9520e6e59
16 changed files with 875 additions and 65 deletions
+4
View File
@@ -554,6 +554,10 @@ for_each_vdev_run_cb(void *zhp_data, nvlist_t *nv, void *cb_vcdl)
if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) != 0)
return (1);
/* Make sure we're getting the updated enclosure sysfs path */
update_vdev_config_dev_sysfs_path(nv, path,
ZPOOL_CONFIG_VDEV_ENC_SYSFS_PATH);
nvlist_lookup_string(nv, ZPOOL_CONFIG_VDEV_ENC_SYSFS_PATH,
&vdev_enc_sysfs_path);