zed: add hotplug support for spare vdevs
This commit supports for spare vdev hotplug. The spare vdev associated with all the pools will be marked as "Removed" when the drive is physically detached and will become "Available" when the drive is reattached. Currently, the spare vdev status does not change on the drive removal and the same is the case with reattachment. Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ameer Hamza <ahamza@ixsystems.com> Closes #14295
This commit is contained in:
Ameer Hamza
GitHub
parent
289f7e6adb
commit
5091867ee6
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@ -170,7 +170,7 @@ zfs_agent_iter_pool(zpool_handle_t *zhp, void *arg)
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}
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zpool_close(zhp);
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return (gsp->gs_vdev_guid != 0);
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return (gsp->gs_devid != NULL && gsp->gs_vdev_guid != 0);
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}
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void
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@ -190,10 +190,12 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
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uint64_t wholedisk = 0ULL;
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uint64_t offline = 0ULL, faulted = 0ULL;
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uint64_t guid = 0ULL;
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uint64_t is_spare = 0;
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char *physpath = NULL, *new_devid = NULL, *enc_sysfs_path = NULL;
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char rawpath[PATH_MAX], fullpath[PATH_MAX];
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char devpath[PATH_MAX];
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int ret;
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int online_flag = ZFS_ONLINE_CHECKREMOVE | ZFS_ONLINE_UNSPARE;
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boolean_t is_sd = B_FALSE;
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boolean_t is_mpath_wholedisk = B_FALSE;
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uint_t c;
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@ -219,6 +221,7 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
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(void) nvlist_lookup_uint64(vdev, ZPOOL_CONFIG_FAULTED, &faulted);
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(void) nvlist_lookup_uint64(vdev, ZPOOL_CONFIG_GUID, &guid);
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(void) nvlist_lookup_uint64(vdev, ZPOOL_CONFIG_IS_SPARE, &is_spare);
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/*
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* Special case:
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@ -309,11 +312,13 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
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}
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}
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if (is_spare)
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online_flag |= ZFS_ONLINE_SPARE;
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/*
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* Attempt to online the device.
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*/
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if (zpool_vdev_online(zhp, fullpath,
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ZFS_ONLINE_CHECKREMOVE | ZFS_ONLINE_UNSPARE, &newstate) == 0 &&
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if (zpool_vdev_online(zhp, fullpath, online_flag, &newstate) == 0 &&
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(newstate == VDEV_STATE_HEALTHY ||
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newstate == VDEV_STATE_DEGRADED)) {
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zed_log_msg(LOG_INFO,
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@ -537,6 +542,7 @@ typedef struct dev_data {
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uint64_t dd_vdev_guid;
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uint64_t dd_new_vdev_guid;
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const char *dd_new_devid;
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uint64_t dd_num_spares;
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} dev_data_t;
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static void
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@ -547,6 +553,7 @@ zfs_iter_vdev(zpool_handle_t *zhp, nvlist_t *nvl, void *data)
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uint_t c, children;
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nvlist_t **child;
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uint64_t guid = 0;
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uint64_t isspare = 0;
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/*
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* First iterate over any children.
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@ -572,7 +579,7 @@ zfs_iter_vdev(zpool_handle_t *zhp, nvlist_t *nvl, void *data)
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}
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/* once a vdev was matched and processed there is nothing left to do */
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if (dp->dd_found)
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if (dp->dd_found && dp->dd_num_spares == 0)
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return;
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(void) nvlist_lookup_uint64(nvl, ZPOOL_CONFIG_GUID, &guid);
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@ -622,6 +629,10 @@ zfs_iter_vdev(zpool_handle_t *zhp, nvlist_t *nvl, void *data)
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}
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}
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if (dp->dd_found == B_TRUE && nvlist_lookup_uint64(nvl,
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ZPOOL_CONFIG_IS_SPARE, &isspare) == 0 && isspare)
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dp->dd_num_spares++;
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(dp->dd_func)(zhp, nvl, dp->dd_islabeled);
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}
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@ -682,7 +693,9 @@ zfs_iter_pool(zpool_handle_t *zhp, void *data)
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}
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zpool_close(zhp);
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return (dp->dd_found); /* cease iteration after a match */
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/* cease iteration after a match */
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return (dp->dd_found && dp->dd_num_spares == 0);
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}
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/*
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@ -76,6 +76,8 @@ typedef struct find_cbdata {
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uint64_t cb_guid;
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zpool_handle_t *cb_zhp;
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nvlist_t *cb_vdev;
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uint64_t cb_vdev_guid;
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uint64_t cb_num_spares;
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} find_cbdata_t;
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static int
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@ -141,6 +143,64 @@ find_vdev(libzfs_handle_t *zhdl, nvlist_t *nv, uint64_t search_guid)
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return (NULL);
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}
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static int
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remove_spares(zpool_handle_t *zhp, void *data)
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{
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nvlist_t *config, *nvroot;
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nvlist_t **spares;
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uint_t nspares;
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char *devname;
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find_cbdata_t *cbp = data;
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uint64_t spareguid = 0;
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vdev_stat_t *vs;
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unsigned int c;
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config = zpool_get_config(zhp, NULL);
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if (nvlist_lookup_nvlist(config,
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ZPOOL_CONFIG_VDEV_TREE, &nvroot) != 0) {
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zpool_close(zhp);
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return (0);
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}
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if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES,
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&spares, &nspares) != 0) {
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zpool_close(zhp);
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return (0);
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}
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for (int i = 0; i < nspares; i++) {
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if (nvlist_lookup_uint64(spares[i], ZPOOL_CONFIG_GUID,
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&spareguid) == 0 && spareguid == cbp->cb_vdev_guid) {
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devname = zpool_vdev_name(NULL, zhp, spares[i],
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B_FALSE);
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nvlist_lookup_uint64_array(spares[i],
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ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &c);
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if (vs->vs_state != VDEV_STATE_REMOVED &&
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zpool_vdev_remove_wanted(zhp, devname) == 0)
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cbp->cb_num_spares++;
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break;
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}
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}
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zpool_close(zhp);
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return (0);
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}
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/*
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* Given a vdev guid, find and remove all spares associated with it.
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*/
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static int
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find_and_remove_spares(libzfs_handle_t *zhdl, uint64_t vdev_guid)
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{
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find_cbdata_t cb;
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cb.cb_num_spares = 0;
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cb.cb_vdev_guid = vdev_guid;
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zpool_iter(zhdl, remove_spares, &cb);
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return (cb.cb_num_spares);
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}
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/*
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* Given a (pool, vdev) GUID pair, find the matching pool and vdev.
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*/
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@ -315,6 +375,8 @@ zfs_retire_recv(fmd_hdl_t *hdl, fmd_event_t *ep, nvlist_t *nvl,
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libzfs_handle_t *zhdl = zdp->zrd_hdl;
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boolean_t fault_device, degrade_device;
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boolean_t is_repair;
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boolean_t l2arc = B_FALSE;
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boolean_t spare = B_FALSE;
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char *scheme;
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nvlist_t *vdev = NULL;
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char *uuid;
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@ -323,7 +385,6 @@ zfs_retire_recv(fmd_hdl_t *hdl, fmd_event_t *ep, nvlist_t *nvl,
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boolean_t is_disk;
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vdev_aux_t aux;
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uint64_t state = 0;
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int l2arc;
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vdev_stat_t *vs;
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unsigned int c;
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@ -343,10 +404,26 @@ zfs_retire_recv(fmd_hdl_t *hdl, fmd_event_t *ep, nvlist_t *nvl,
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char *devtype;
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char *devname;
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if (nvlist_lookup_string(nvl, FM_EREPORT_PAYLOAD_ZFS_VDEV_TYPE,
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&devtype) == 0) {
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if (strcmp(devtype, VDEV_TYPE_SPARE) == 0)
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spare = B_TRUE;
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else if (strcmp(devtype, VDEV_TYPE_L2CACHE) == 0)
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l2arc = B_TRUE;
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}
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if (nvlist_lookup_uint64(nvl,
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FM_EREPORT_PAYLOAD_ZFS_VDEV_GUID, &vdev_guid) != 0)
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return;
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if (spare) {
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int nspares = find_and_remove_spares(zhdl, vdev_guid);
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fmd_hdl_debug(hdl, "%d spares removed", nspares);
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return;
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}
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if (nvlist_lookup_uint64(nvl, FM_EREPORT_PAYLOAD_ZFS_POOL_GUID,
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&pool_guid) != 0 ||
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nvlist_lookup_uint64(nvl, FM_EREPORT_PAYLOAD_ZFS_VDEV_GUID,
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&vdev_guid) != 0)
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&pool_guid) != 0)
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return;
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if ((zhp = find_by_guid(zhdl, pool_guid, vdev_guid,
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@ -367,10 +444,6 @@ zfs_retire_recv(fmd_hdl_t *hdl, fmd_event_t *ep, nvlist_t *nvl,
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state == VDEV_STATE_REMOVED)
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return;
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l2arc = (nvlist_lookup_string(nvl,
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FM_EREPORT_PAYLOAD_ZFS_VDEV_TYPE, &devtype) == 0 &&
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strcmp(devtype, VDEV_TYPE_L2CACHE) == 0);
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/* Remove the vdev since device is unplugged */
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if (l2arc || (strcmp(class, "resource.fs.zfs.removed") == 0)) {
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int status = zpool_vdev_remove_wanted(zhp, devname);
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@ -1657,6 +1657,7 @@ typedef enum {
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#define ZFS_ONLINE_UNSPARE 0x2
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#define ZFS_ONLINE_FORCEFAULT 0x4
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#define ZFS_ONLINE_EXPAND 0x8
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#define ZFS_ONLINE_SPARE 0x10
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#define ZFS_OFFLINE_TEMPORARY 0x1
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/*
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@ -2961,7 +2961,7 @@ zpool_vdev_online(zpool_handle_t *zhp, const char *path, int flags,
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zc.zc_guid = fnvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID);
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if (avail_spare)
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if (!(flags & ZFS_ONLINE_SPARE) && avail_spare)
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return (zfs_error(hdl, EZFS_ISSPARE, errbuf));
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#ifndef __FreeBSD__
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@ -3098,9 +3098,6 @@ zpool_vdev_remove_wanted(zpool_handle_t *zhp, const char *path)
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zc.zc_guid = fnvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID);
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if (avail_spare)
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return (zfs_error(hdl, EZFS_ISSPARE, errbuf));
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zc.zc_cookie = VDEV_STATE_REMOVED;
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if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
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@ -356,6 +356,8 @@ spa_write_cachefile(spa_t *target, boolean_t removing, boolean_t postsysevent,
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vdev_post_kobj_evt(target->spa_root_vdev);
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for (int i = 0; i < target->spa_l2cache.sav_count; i++)
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vdev_post_kobj_evt(target->spa_l2cache.sav_vdevs[i]);
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for (int i = 0; i < target->spa_spares.sav_count; i++)
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vdev_post_kobj_evt(target->spa_spares.sav_vdevs[i]);
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}
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}
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