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Add zfs_prepare_disk script for disk firmware install

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Have libzfs call a special `zfs_prepare_disk` script before a disk is
included into the pool.  The user can edit this script to add things
like a disk firmware update or a disk health check.  Use of the script
is totally optional. See the zfs_prepare_disk manpage for full details.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #15243
This commit is contained in:
Tony Hutter
2023-09-21 08:36:26 -07:00
committed by GitHub
parent 4647353c8b
commit b53077a9e7
14 changed files with 388 additions and 35 deletions
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cmd/zed/agents/zfs_mod.c
+41 -2
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@@ -146,6 +146,17 @@ zfs_unavail_pool(zpool_handle_t *zhp, void *data)
return (0);
}
/*
* Write an array of strings to the zed log
*/
static void lines_to_zed_log_msg(char **lines, int lines_cnt)
{
int i;
for (i = 0; i < lines_cnt; i++) {
zed_log_msg(LOG_INFO, "%s", lines[i]);
}
}
/*
* Two stage replace on Linux
* since we get disk notifications
@@ -200,6 +211,8 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
boolean_t is_mpath_wholedisk = B_FALSE;
uint_t c;
vdev_stat_t *vs;
char **lines = NULL;
int lines_cnt = 0;
if (nvlist_lookup_string(vdev, ZPOOL_CONFIG_PATH, &path) != 0)
return;
@@ -383,6 +396,22 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
if (is_mpath_wholedisk) {
/* Don't label device mapper or multipath disks. */
zed_log_msg(LOG_INFO,
" it's a multipath wholedisk, don't label");
if (zpool_prepare_disk(zhp, vdev, "autoreplace", &lines,
&lines_cnt) != 0) {
zed_log_msg(LOG_INFO,
" zpool_prepare_disk: could not "
"prepare '%s' (%s)", fullpath,
libzfs_error_description(g_zfshdl));
if (lines_cnt > 0) {
zed_log_msg(LOG_INFO,
" zfs_prepare_disk output:");
lines_to_zed_log_msg(lines, lines_cnt);
}
libzfs_free_str_array(lines, lines_cnt);
return;
}
} else if (!labeled) {
/*
* we're auto-replacing a raw disk, so label it first
@@ -405,10 +434,18 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
* If this is a request to label a whole disk, then attempt to
* write out the label.
*/
if (zpool_label_disk(g_zfshdl, zhp, leafname) != 0) {
zed_log_msg(LOG_INFO, " zpool_label_disk: could not "
if (zpool_prepare_and_label_disk(g_zfshdl, zhp, leafname,
vdev, "autoreplace", &lines, &lines_cnt) != 0) {
zed_log_msg(LOG_INFO,
" zpool_prepare_and_label_disk: could not "
"label '%s' (%s)", leafname,
libzfs_error_description(g_zfshdl));
if (lines_cnt > 0) {
zed_log_msg(LOG_INFO,
" zfs_prepare_disk output:");
lines_to_zed_log_msg(lines, lines_cnt);
}
libzfs_free_str_array(lines, lines_cnt);
(void) zpool_vdev_online(zhp, fullpath,
ZFS_ONLINE_FORCEFAULT, &newstate);
@@ -468,6 +505,8 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
DEV_BYID_PATH, new_devid);
}
libzfs_free_str_array(lines, lines_cnt);
/*
* Construct the root vdev to pass to zpool_vdev_attach(). While adding
* the entire vdev structure is harmless, we construct a reduced set of