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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
Download Patch File Download Diff File Expand all files Collapse all files
cmd/zed/agents/zfs_mod.c
+41 -2
View File
@@ -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
cmd/zpool/zpool_iter.c
+7 -26
View File
@@ -443,37 +443,22 @@ vdev_run_cmd(vdev_cmd_data_t *data, char *cmd)
{
int rc;
char *argv[2] = {cmd};
char *env[5] = {(char *)"PATH=/bin:/sbin:/usr/bin:/usr/sbin"};
char **env;
char **lines = NULL;
int lines_cnt = 0;
int i;
/* Setup our custom environment variables */
rc = asprintf(&env[1], "VDEV_PATH=%s",
data->path ? data->path : "");
if (rc == -1) {
env[1] = NULL;
env = zpool_vdev_script_alloc_env(data->pool, data->path, data->upath,
data->vdev_enc_sysfs_path, NULL, NULL);
if (env == NULL)
goto out;
}
rc = asprintf(&env[2], "VDEV_UPATH=%s",
data->upath ? data->upath : "");
if (rc == -1) {
env[2] = NULL;
goto out;
}
rc = asprintf(&env[3], "VDEV_ENC_SYSFS_PATH=%s",
data->vdev_enc_sysfs_path ?
data->vdev_enc_sysfs_path : "");
if (rc == -1) {
env[3] = NULL;
goto out;
}
/* Run the command */
rc = libzfs_run_process_get_stdout_nopath(cmd, argv, env, &lines,
&lines_cnt);
zpool_vdev_script_free_env(env);
if (rc != 0)
goto out;
@@ -485,10 +470,6 @@ vdev_run_cmd(vdev_cmd_data_t *data, char *cmd)
out:
if (lines != NULL)
libzfs_free_str_array(lines, lines_cnt);
/* Start with i = 1 since env[0] was statically allocated */
for (i = 1; i < ARRAY_SIZE(env); i++)
free(env[i]);
}
/*
cmd/zpool/zpool_util.h
+4
View File
@@ -126,6 +126,10 @@ vdev_cmd_data_list_t *all_pools_for_each_vdev_run(int argc, char **argv,
void free_vdev_cmd_data_list(vdev_cmd_data_list_t *vcdl);
void free_vdev_cmd_data(vdev_cmd_data_t *data);
int vdev_run_cmd_simple(char *path, char *cmd);
int check_device(const char *path, boolean_t force,
boolean_t isspare, boolean_t iswholedisk);
boolean_t check_sector_size_database(char *path, int *sector_size);
cmd/zpool/zpool_vdev.c
+36 -7
View File
@@ -936,6 +936,15 @@ zero_label(const char *path)
return (0);
}
static void
lines_to_stderr(char *lines[], int lines_cnt)
{
int i;
for (i = 0; i < lines_cnt; i++) {
fprintf(stderr, "%s\n", lines[i]);
}
}
/*
* Go through and find any whole disks in the vdev specification, labelling them
* as appropriate. When constructing the vdev spec, we were unable to open this
@@ -947,7 +956,7 @@ zero_label(const char *path)
* need to get the devid after we label the disk.
*/
static int
make_disks(zpool_handle_t *zhp, nvlist_t *nv)
make_disks(zpool_handle_t *zhp, nvlist_t *nv, boolean_t replacing)
{
nvlist_t **child;
uint_t c, children;
@@ -1032,6 +1041,8 @@ make_disks(zpool_handle_t *zhp, nvlist_t *nv)
*/
if (!is_exclusive && !is_spare(NULL, udevpath)) {
char *devnode = strrchr(devpath, '/') + 1;
char **lines = NULL;
int lines_cnt = 0;
ret = strncmp(udevpath, UDISK_ROOT, strlen(UDISK_ROOT));
if (ret == 0) {
@@ -1043,9 +1054,27 @@ make_disks(zpool_handle_t *zhp, nvlist_t *nv)
/*
* When labeling a pool the raw device node name
* is provided as it appears under /dev/.
*
* Note that 'zhp' will be NULL when we're creating a
* pool.
*/
if (zpool_label_disk(g_zfs, zhp, devnode) == -1)
if (zpool_prepare_and_label_disk(g_zfs, zhp, devnode,
nv, zhp == NULL ? "create" :
replacing ? "replace" : "add", &lines,
&lines_cnt) != 0) {
(void) fprintf(stderr,
gettext(
"Error preparing/labeling disk.\n"));
if (lines_cnt > 0) {
(void) fprintf(stderr,
gettext("zfs_prepare_disk output:\n"));
lines_to_stderr(lines, lines_cnt);
}
libzfs_free_str_array(lines, lines_cnt);
return (-1);
}
libzfs_free_str_array(lines, lines_cnt);
/*
* Wait for udev to signal the device is available
@@ -1082,19 +1111,19 @@ make_disks(zpool_handle_t *zhp, nvlist_t *nv)
}
for (c = 0; c < children; c++)
if ((ret = make_disks(zhp, child[c])) != 0)
if ((ret = make_disks(zhp, child[c], replacing)) != 0)
return (ret);
if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES,
&child, &children) == 0)
for (c = 0; c < children; c++)
if ((ret = make_disks(zhp, child[c])) != 0)
if ((ret = make_disks(zhp, child[c], replacing)) != 0)
return (ret);
if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE,
&child, &children) == 0)
for (c = 0; c < children; c++)
if ((ret = make_disks(zhp, child[c])) != 0)
if ((ret = make_disks(zhp, child[c], replacing)) != 0)
return (ret);
return (0);
@@ -1752,7 +1781,7 @@ split_mirror_vdev(zpool_handle_t *zhp, char *newname, nvlist_t *props,
return (NULL);
}
if (!flags.dryrun && make_disks(zhp, newroot) != 0) {
if (!flags.dryrun && make_disks(zhp, newroot, B_FALSE) != 0) {
nvlist_free(newroot);
return (NULL);
}
@@ -1873,7 +1902,7 @@ make_root_vdev(zpool_handle_t *zhp, nvlist_t *props, int force, int check_rep,
/*
* Run through the vdev specification and label any whole disks found.
*/
if (!dryrun && make_disks(zhp, newroot) != 0) {
if (!dryrun && make_disks(zhp, newroot, replacing) != 0) {
nvlist_free(newroot);
return (NULL);
}