Add support for zfs mount -R <filesystem>
This commit adds support for mounting a dataset along with all of it's children with '-R' flag for zfs mount. There can be scenarios where we want to mount all datasets under one hierarchy instead of mounting all datasets present on system with '-a' flag. '-R' flag should work on all root and non-root datasets. Usage information and man page has been updated for zfs mount. A test for verifying the behavior for '-R' flag is also added. Reviewed-by: Ameer Hamza <ahamza@ixsystems.com> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Umer Saleem <usaleem@ixsystems.com> Closes #16015
This commit is contained in:
Umer Saleem
Tony Hutter
parent
9a7ef02f4d
commit
8a56047135
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@ -309,7 +309,8 @@ get_usage(zfs_help_t idx)
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"[filesystem|volume|snapshot] ...\n"));
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case HELP_MOUNT:
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return (gettext("\tmount\n"
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"\tmount [-flvO] [-o opts] <-a | filesystem>\n"));
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"\tmount [-flvO] [-o opts] <-a|-R filesystem|"
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"filesystem>\n"));
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case HELP_PROMOTE:
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return (gettext("\tpromote <clone-filesystem>\n"));
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case HELP_RECEIVE:
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@ -6750,6 +6751,8 @@ zfs_do_holds(int argc, char **argv)
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#define MOUNT_TIME 1 /* seconds */
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typedef struct get_all_state {
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char **ga_datasets;
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int ga_count;
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boolean_t ga_verbose;
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get_all_cb_t *ga_cbp;
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} get_all_state_t;
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@ -6796,19 +6799,35 @@ get_one_dataset(zfs_handle_t *zhp, void *data)
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return (0);
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}
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static void
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get_all_datasets(get_all_cb_t *cbp, boolean_t verbose)
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static int
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get_recursive_datasets(zfs_handle_t *zhp, void *data)
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{
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get_all_state_t state = {
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.ga_verbose = verbose,
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.ga_cbp = cbp
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};
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get_all_state_t *state = data;
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int len = strlen(zfs_get_name(zhp));
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for (int i = 0; i < state->ga_count; ++i) {
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if (strcmp(state->ga_datasets[i], zfs_get_name(zhp)) == 0)
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return (get_one_dataset(zhp, data));
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else if ((strncmp(state->ga_datasets[i], zfs_get_name(zhp),
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len) == 0) && state->ga_datasets[i][len] == '/') {
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(void) zfs_iter_filesystems_v2(zhp, 0,
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get_recursive_datasets, data);
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}
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}
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zfs_close(zhp);
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return (0);
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}
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if (verbose)
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static void
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get_all_datasets(get_all_state_t *state)
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{
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if (state->ga_verbose)
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set_progress_header(gettext("Reading ZFS config"));
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(void) zfs_iter_root(g_zfs, get_one_dataset, &state);
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if (state->ga_datasets == NULL)
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(void) zfs_iter_root(g_zfs, get_one_dataset, state);
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else
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(void) zfs_iter_root(g_zfs, get_recursive_datasets, state);
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if (verbose)
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if (state->ga_verbose)
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finish_progress(gettext("done."));
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}
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@ -7154,18 +7173,22 @@ static int
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share_mount(int op, int argc, char **argv)
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{
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int do_all = 0;
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int recursive = 0;
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boolean_t verbose = B_FALSE;
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int c, ret = 0;
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char *options = NULL;
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int flags = 0;
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/* check options */
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while ((c = getopt(argc, argv, op == OP_MOUNT ? ":alvo:Of" : "al"))
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while ((c = getopt(argc, argv, op == OP_MOUNT ? ":aRlvo:Of" : "al"))
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!= -1) {
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switch (c) {
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case 'a':
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do_all = 1;
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break;
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case 'R':
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recursive = 1;
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break;
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case 'v':
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verbose = B_TRUE;
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break;
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@ -7207,7 +7230,7 @@ share_mount(int op, int argc, char **argv)
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argv += optind;
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/* check number of arguments */
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if (do_all) {
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if (do_all || recursive) {
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enum sa_protocol protocol = SA_NO_PROTOCOL;
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if (op == OP_SHARE && argc > 0) {
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@ -7216,14 +7239,38 @@ share_mount(int op, int argc, char **argv)
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argv++;
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}
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if (argc != 0) {
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if (argc != 0 && do_all) {
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(void) fprintf(stderr, gettext("too many arguments\n"));
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usage(B_FALSE);
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}
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if (argc == 0 && recursive) {
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(void) fprintf(stderr,
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gettext("no dataset provided\n"));
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usage(B_FALSE);
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}
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start_progress_timer();
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get_all_cb_t cb = { 0 };
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get_all_datasets(&cb, verbose);
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get_all_state_t state = { 0 };
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if (argc == 0) {
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state.ga_datasets = NULL;
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state.ga_count = -1;
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} else {
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zfs_handle_t *zhp;
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for (int i = 0; i < argc; i++) {
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zhp = zfs_open(g_zfs, argv[i],
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ZFS_TYPE_FILESYSTEM);
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if (zhp == NULL)
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usage(B_FALSE);
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zfs_close(zhp);
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}
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state.ga_datasets = argv;
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state.ga_count = argc;
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}
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state.ga_verbose = verbose;
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state.ga_cbp = &cb;
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get_all_datasets(&state);
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if (cb.cb_used == 0) {
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free(options);
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@ -43,7 +43,7 @@
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.Cm mount
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.Op Fl Oflv
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.Op Fl o Ar options
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.Fl a Ns | Ns Ar filesystem
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.Fl a Ns | Ns Fl R Ar filesystem Ns | Ns Ar filesystem
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.Nm zfs
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.Cm unmount
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.Op Fl fu
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@ -61,7 +61,7 @@ Displays all ZFS file systems currently mounted.
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.Cm mount
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.Op Fl Oflv
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.Op Fl o Ar options
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.Fl a Ns | Ns Ar filesystem
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.Fl a Ns | Ns Fl R Ar filesystem Ns | Ns Ar filesystem
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.Xc
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Mount ZFS filesystem on a path described by its
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.Sy mountpoint
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@ -83,6 +83,8 @@ for more information.
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.It Fl a
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Mount all available ZFS file systems.
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Invoked automatically as part of the boot process if configured.
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.It Fl R
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Mount the specified filesystems along with all their children.
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.It Ar filesystem
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Mount the specified filesystem.
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.It Fl o Ar options
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@ -246,7 +246,7 @@ tests = ['zfs_mount_001_pos', 'zfs_mount_002_pos', 'zfs_mount_003_pos',
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'zfs_mount_009_neg', 'zfs_mount_010_neg', 'zfs_mount_011_neg',
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'zfs_mount_012_pos', 'zfs_mount_all_001_pos', 'zfs_mount_encrypted',
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'zfs_mount_remount', 'zfs_mount_all_fail', 'zfs_mount_all_mountpoints',
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'zfs_mount_test_race']
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'zfs_mount_test_race', 'zfs_mount_recursive']
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tags = ['functional', 'cli_root', 'zfs_mount']
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[tests/functional/cli_root/zfs_program]
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@ -155,7 +155,8 @@ tests = ['zfs_mount_001_pos', 'zfs_mount_002_pos', 'zfs_mount_003_pos',
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'zfs_mount_004_pos', 'zfs_mount_005_pos', 'zfs_mount_007_pos',
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'zfs_mount_009_neg', 'zfs_mount_010_neg', 'zfs_mount_011_neg',
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'zfs_mount_012_pos', 'zfs_mount_encrypted', 'zfs_mount_remount',
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'zfs_mount_all_fail', 'zfs_mount_all_mountpoints', 'zfs_mount_test_race']
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'zfs_mount_all_fail', 'zfs_mount_all_mountpoints',
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'zfs_mount_test_race', 'zfs_mount_recursive']
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tags = ['functional', 'cli_root', 'zfs_mount']
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[tests/functional/cli_root/zfs_program]
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@ -769,6 +769,7 @@ nobase_dist_datadir_zfs_tests_tests_SCRIPTS += \
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functional/cli_root/zfs_mount/zfs_mount_all_fail.ksh \
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functional/cli_root/zfs_mount/zfs_mount_all_mountpoints.ksh \
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functional/cli_root/zfs_mount/zfs_mount_encrypted.ksh \
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functional/cli_root/zfs_mount/zfs_mount_recursive.ksh \
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functional/cli_root/zfs_mount/zfs_mount_remount.ksh \
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functional/cli_root/zfs_mount/zfs_mount_test_race.ksh \
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functional/cli_root/zfs_mount/zfs_multi_mount.ksh \
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@ -31,6 +31,7 @@
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export mountcmd=mount
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export mountforce="$mountcmd -f"
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export mountall="$mountcmd -a"
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export mountrecursive="$mountcmd -R"
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export unmountcmd=unmount
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export unmountforce="$unmountcmd -f"
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@ -0,0 +1,146 @@
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#!/bin/ksh -p
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#
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# CDDL HEADER START
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#
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# The contents of this file are subject to the terms of the
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# Common Development and Distribution License (the "License").
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# You may not use this file except in compliance with the License.
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#
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# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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# or https://opensource.org/licenses/CDDL-1.0.
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# See the License for the specific language governing permissions
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# and limitations under the License.
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#
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# When distributing Covered Code, include this CDDL HEADER in each
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# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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# If applicable, add the following below this CDDL HEADER, with the
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# fields enclosed by brackets "[]" replaced with your own identifying
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# information: Portions Copyright [yyyy] [name of copyright owner]
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#
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# CDDL HEADER END
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#
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#
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# Copyright 2024, iXsystems Inc. All rights reserved.
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#
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. $STF_SUITE/include/libtest.shlib
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. $STF_SUITE/tests/functional/cli_root/zfs_mount/zfs_mount.kshlib
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#
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# DESCRIPTION:
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# Verify zfs mount -R <filesystems/s> functionality.
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#
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# STRATEGY:
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# 1. Create nested datasets
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# 2. Unmount all datasets
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# 3. Recusrively mount root datasets, this should mount all datasets
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# present in a pool
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# 4. Unmount all datasets
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# 5. Recusrsively mount child datasets with children. This should mount
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# child datasets, but not the root dataset or parent datasets
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# 6. Unmount all datasets
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# 7. Mount root dataset recursively again and confirm all child
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# datasets are mounted.
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#
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verify_runnable "both"
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function cleanup
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{
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log_must datasetexists $TESTPOOL/$TESTFS1 && \
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destroy_dataset $TESTPOOL/$TESTFS1 -R
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log_must datasetexists $TESTPOOL/$TESTFS2 && \
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destroy_dataset $TESTPOOL/$TESTFS2 -R
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log_must datasetexists $TESTPOOL/$TESTFS3 && \
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destroy_dataset $TESTPOOL/$TESTFS3 -R
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}
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function setup_all
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{
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log_must datasetexists $TESTPOOL/$TESTFS || zfs create $TESTPOOL/$TESTFS
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log_must zfs create $TESTPOOL/$TESTFS1
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log_must zfs create $TESTPOOL/$TESTFS2
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log_must zfs create $TESTPOOL/$TESTFS3
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log_must zfs create $TESTPOOL/$TESTFS2/child1
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log_must zfs create $TESTPOOL/$TESTFS2/child2
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log_must zfs create $TESTPOOL/$TESTFS2/child3
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log_must zfs create $TESTPOOL/$TESTFS2/child2/subchild
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log_must zfs create $TESTPOOL/$TESTFS3/child
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}
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log_assert "Verify that 'zfs $mountrecursive' successfully, " \
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"mounts the dataset along with all its children."
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log_onexit cleanup
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log_must setup_all
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log_must zfs $unmountall
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log_must zfs $mountrecursive $TESTPOOL
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log_must mounted $TESTPOOL
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log_must mounted $TESTPOOL/$TESTFS
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log_must mounted $TESTPOOL/$TESTFS1
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log_must mounted $TESTPOOL/$TESTFS2
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log_must mounted $TESTPOOL/$TESTFS3
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log_must mounted $TESTPOOL/$TESTFS2/child1
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log_must mounted $TESTPOOL/$TESTFS2/child2
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log_must mounted $TESTPOOL/$TESTFS2/child3
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log_must mounted $TESTPOOL/$TESTFS2/child2/subchild
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log_must mounted $TESTPOOL/$TESTFS3/child
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log_must zfs $unmountall
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log_mustnot mounted $TESTPOOL
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log_mustnot mounted $TESTPOOL/$TESTFS
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log_mustnot mounted $TESTPOOL/$TESTFS1
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log_mustnot mounted $TESTPOOL/$TESTFS2
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log_mustnot mounted $TESTPOOL/$TESTFS3
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log_mustnot mounted $TESTPOOL/$TESTFS2/child1
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log_mustnot mounted $TESTPOOL/$TESTFS2/child2
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log_mustnot mounted $TESTPOOL/$TESTFS2/child3
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log_mustnot mounted $TESTPOOL/$TESTFS2/child2/subchild
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log_mustnot mounted $TESTPOOL/$TESTFS3/child
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log_must zfs $mountrecursive $TESTPOOL/$TESTFS2 $TESTPOOL/$TESTFS3
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log_mustnot mounted $TESTPOOL
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log_mustnot mounted $TESTPOOL/$TESTFS
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log_mustnot mounted $TESTPOOL/$TESTFS1
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log_must mounted $TESTPOOL/$TESTFS2
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log_must mounted $TESTPOOL/$TESTFS3
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log_must mounted $TESTPOOL/$TESTFS2/child1
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log_must mounted $TESTPOOL/$TESTFS2/child2
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log_must mounted $TESTPOOL/$TESTFS2/child3
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log_must mounted $TESTPOOL/$TESTFS2/child2/subchild
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log_must mounted $TESTPOOL/$TESTFS3/child
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log_must zfs $unmountall
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log_mustnot mounted $TESTPOOL
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log_mustnot mounted $TESTPOOL/$TESTFS
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log_mustnot mounted $TESTPOOL/$TESTFS1
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log_mustnot mounted $TESTPOOL/$TESTFS2
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log_mustnot mounted $TESTPOOL/$TESTFS3
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log_mustnot mounted $TESTPOOL/$TESTFS2/child1
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log_mustnot mounted $TESTPOOL/$TESTFS2/child2
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log_mustnot mounted $TESTPOOL/$TESTFS2/child3
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log_mustnot mounted $TESTPOOL/$TESTFS2/child2/subchild
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log_mustnot mounted $TESTPOOL/$TESTFS3/child
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log_must zfs $mountrecursive $TESTPOOL/$TESTFS2/child2
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log_must mounted $TESTPOOL/$TESTFS2/child2
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log_must mounted $TESTPOOL/$TESTFS2/child2/subchild
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log_mustnot mounted $TESTPOOL
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log_mustnot mounted $TESTPOOL/$TESTFS
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log_mustnot mounted $TESTPOOL/$TESTFS1
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log_mustnot mounted $TESTPOOL/$TESTFS2
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log_mustnot mounted $TESTPOOL/$TESTFS3
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log_mustnot mounted $TESTPOOL/$TESTFS2/child1
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log_mustnot mounted $TESTPOOL/$TESTFS2/child3
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log_mustnot mounted $TESTPOOL/$TESTFS3/child
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log_pass "'zfs $mountrecursive' behaves as expected."
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