mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2026-05-23 10:54:35 +03:00
zcommon: pre-iterate over sysfs instead of statting every feature
If sufficient memory (<2K, realistically) is available, libzfs_init() can be significantly shorted by iterating over the correct sysfs directory before registrations, we can turn 168 stats into 15/18 syscalls (3 opens (6 if built in), 3 fstats, 6 getdentses, and 3 closes), a tenfoldish reduction; this is probably a bit faster, too. The list is always optional, and registration functions (and one-off users) can simply pass NULL, which will fall back to the previous mechanism Also, don't allocate in zfs_mod_supported_impl, and use use access() instead of stat(), since existence is really what we care about Also, fix pre-prop-checking compat in fallback for built-in ZFS Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12089
This commit is contained in:
наб
+97
-74
@@ -65,90 +65,105 @@ zpool_prop_init(void)
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{ NULL }
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};
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struct zfs_mod_supported_features *sfeatures =
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zfs_mod_list_supported(ZFS_SYSFS_POOL_PROPERTIES);
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/* string properties */
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zprop_register_string(ZPOOL_PROP_ALTROOT, "altroot", NULL, PROP_DEFAULT,
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ZFS_TYPE_POOL, "<path>", "ALTROOT");
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ZFS_TYPE_POOL, "<path>", "ALTROOT", sfeatures);
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zprop_register_string(ZPOOL_PROP_BOOTFS, "bootfs", NULL, PROP_DEFAULT,
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ZFS_TYPE_POOL, "<filesystem>", "BOOTFS");
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ZFS_TYPE_POOL, "<filesystem>", "BOOTFS", sfeatures);
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zprop_register_string(ZPOOL_PROP_CACHEFILE, "cachefile", NULL,
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PROP_DEFAULT, ZFS_TYPE_POOL, "<file> | none", "CACHEFILE");
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PROP_DEFAULT, ZFS_TYPE_POOL, "<file> | none", "CACHEFILE",
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sfeatures);
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zprop_register_string(ZPOOL_PROP_COMMENT, "comment", NULL,
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PROP_DEFAULT, ZFS_TYPE_POOL, "<comment-string>", "COMMENT");
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PROP_DEFAULT, ZFS_TYPE_POOL, "<comment-string>", "COMMENT",
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sfeatures);
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zprop_register_string(ZPOOL_PROP_COMPATIBILITY, "compatibility",
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"off", PROP_DEFAULT, ZFS_TYPE_POOL,
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"<file[,file...]> | off | legacy", "COMPATIBILITY");
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"<file[,file...]> | off | legacy", "COMPATIBILITY", sfeatures);
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/* readonly number properties */
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zprop_register_number(ZPOOL_PROP_SIZE, "size", 0, PROP_READONLY,
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ZFS_TYPE_POOL, "<size>", "SIZE");
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ZFS_TYPE_POOL, "<size>", "SIZE", sfeatures);
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zprop_register_number(ZPOOL_PROP_FREE, "free", 0, PROP_READONLY,
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ZFS_TYPE_POOL, "<size>", "FREE");
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ZFS_TYPE_POOL, "<size>", "FREE", sfeatures);
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zprop_register_number(ZPOOL_PROP_FREEING, "freeing", 0, PROP_READONLY,
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ZFS_TYPE_POOL, "<size>", "FREEING");
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ZFS_TYPE_POOL, "<size>", "FREEING", sfeatures);
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zprop_register_number(ZPOOL_PROP_CHECKPOINT, "checkpoint", 0,
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PROP_READONLY, ZFS_TYPE_POOL, "<size>", "CKPOINT");
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PROP_READONLY, ZFS_TYPE_POOL, "<size>", "CKPOINT", sfeatures);
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zprop_register_number(ZPOOL_PROP_LEAKED, "leaked", 0, PROP_READONLY,
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ZFS_TYPE_POOL, "<size>", "LEAKED");
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ZFS_TYPE_POOL, "<size>", "LEAKED", sfeatures);
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zprop_register_number(ZPOOL_PROP_ALLOCATED, "allocated", 0,
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PROP_READONLY, ZFS_TYPE_POOL, "<size>", "ALLOC");
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PROP_READONLY, ZFS_TYPE_POOL, "<size>", "ALLOC", sfeatures);
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zprop_register_number(ZPOOL_PROP_EXPANDSZ, "expandsize", 0,
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PROP_READONLY, ZFS_TYPE_POOL, "<size>", "EXPANDSZ");
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PROP_READONLY, ZFS_TYPE_POOL, "<size>", "EXPANDSZ", sfeatures);
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zprop_register_number(ZPOOL_PROP_FRAGMENTATION, "fragmentation", 0,
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PROP_READONLY, ZFS_TYPE_POOL, "<percent>", "FRAG");
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PROP_READONLY, ZFS_TYPE_POOL, "<percent>", "FRAG", sfeatures);
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zprop_register_number(ZPOOL_PROP_CAPACITY, "capacity", 0, PROP_READONLY,
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ZFS_TYPE_POOL, "<size>", "CAP");
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ZFS_TYPE_POOL, "<size>", "CAP", sfeatures);
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zprop_register_number(ZPOOL_PROP_GUID, "guid", 0, PROP_READONLY,
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ZFS_TYPE_POOL, "<guid>", "GUID");
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ZFS_TYPE_POOL, "<guid>", "GUID", sfeatures);
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zprop_register_number(ZPOOL_PROP_LOAD_GUID, "load_guid", 0,
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PROP_READONLY, ZFS_TYPE_POOL, "<load_guid>", "LOAD_GUID");
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PROP_READONLY, ZFS_TYPE_POOL, "<load_guid>", "LOAD_GUID",
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sfeatures);
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zprop_register_number(ZPOOL_PROP_HEALTH, "health", 0, PROP_READONLY,
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ZFS_TYPE_POOL, "<state>", "HEALTH");
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ZFS_TYPE_POOL, "<state>", "HEALTH", sfeatures);
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zprop_register_number(ZPOOL_PROP_DEDUPRATIO, "dedupratio", 0,
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PROP_READONLY, ZFS_TYPE_POOL, "<1.00x or higher if deduped>",
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"DEDUP");
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"DEDUP", sfeatures);
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/* default number properties */
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zprop_register_number(ZPOOL_PROP_VERSION, "version", SPA_VERSION,
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PROP_DEFAULT, ZFS_TYPE_POOL, "<version>", "VERSION");
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PROP_DEFAULT, ZFS_TYPE_POOL, "<version>", "VERSION", sfeatures);
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zprop_register_number(ZPOOL_PROP_ASHIFT, "ashift", 0, PROP_DEFAULT,
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ZFS_TYPE_POOL, "<ashift, 9-16, or 0=default>", "ASHIFT");
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ZFS_TYPE_POOL, "<ashift, 9-16, or 0=default>", "ASHIFT", sfeatures);
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/* default index (boolean) properties */
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zprop_register_index(ZPOOL_PROP_DELEGATION, "delegation", 1,
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PROP_DEFAULT, ZFS_TYPE_POOL, "on | off", "DELEGATION",
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boolean_table);
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boolean_table, sfeatures);
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zprop_register_index(ZPOOL_PROP_AUTOREPLACE, "autoreplace", 0,
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PROP_DEFAULT, ZFS_TYPE_POOL, "on | off", "REPLACE", boolean_table);
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PROP_DEFAULT, ZFS_TYPE_POOL, "on | off", "REPLACE", boolean_table,
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sfeatures);
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zprop_register_index(ZPOOL_PROP_LISTSNAPS, "listsnapshots", 0,
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PROP_DEFAULT, ZFS_TYPE_POOL, "on | off", "LISTSNAPS",
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boolean_table);
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boolean_table, sfeatures);
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zprop_register_index(ZPOOL_PROP_AUTOEXPAND, "autoexpand", 0,
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PROP_DEFAULT, ZFS_TYPE_POOL, "on | off", "EXPAND", boolean_table);
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PROP_DEFAULT, ZFS_TYPE_POOL, "on | off", "EXPAND", boolean_table,
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sfeatures);
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zprop_register_index(ZPOOL_PROP_READONLY, "readonly", 0,
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PROP_DEFAULT, ZFS_TYPE_POOL, "on | off", "RDONLY", boolean_table);
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PROP_DEFAULT, ZFS_TYPE_POOL, "on | off", "RDONLY", boolean_table,
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sfeatures);
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zprop_register_index(ZPOOL_PROP_MULTIHOST, "multihost", 0,
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PROP_DEFAULT, ZFS_TYPE_POOL, "on | off", "MULTIHOST",
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boolean_table);
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boolean_table, sfeatures);
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/* default index properties */
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zprop_register_index(ZPOOL_PROP_FAILUREMODE, "failmode",
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ZIO_FAILURE_MODE_WAIT, PROP_DEFAULT, ZFS_TYPE_POOL,
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"wait | continue | panic", "FAILMODE", failuremode_table);
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"wait | continue | panic", "FAILMODE", failuremode_table,
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sfeatures);
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zprop_register_index(ZPOOL_PROP_AUTOTRIM, "autotrim",
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SPA_AUTOTRIM_DEFAULT, PROP_DEFAULT, ZFS_TYPE_POOL,
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"on | off", "AUTOTRIM", boolean_table);
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"on | off", "AUTOTRIM", boolean_table, sfeatures);
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/* hidden properties */
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zprop_register_hidden(ZPOOL_PROP_NAME, "name", PROP_TYPE_STRING,
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PROP_READONLY, ZFS_TYPE_POOL, "NAME");
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PROP_READONLY, ZFS_TYPE_POOL, "NAME", sfeatures);
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zprop_register_hidden(ZPOOL_PROP_MAXBLOCKSIZE, "maxblocksize",
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PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_POOL, "MAXBLOCKSIZE");
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PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_POOL, "MAXBLOCKSIZE",
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sfeatures);
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zprop_register_hidden(ZPOOL_PROP_TNAME, "tname", PROP_TYPE_STRING,
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PROP_ONETIME, ZFS_TYPE_POOL, "TNAME");
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PROP_ONETIME, ZFS_TYPE_POOL, "TNAME", sfeatures);
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zprop_register_hidden(ZPOOL_PROP_MAXDNODESIZE, "maxdnodesize",
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PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_POOL, "MAXDNODESIZE");
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PROP_TYPE_NUMBER, PROP_READONLY, ZFS_TYPE_POOL, "MAXDNODESIZE",
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sfeatures);
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zprop_register_hidden(ZPOOL_PROP_DEDUPDITTO, "dedupditto",
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PROP_TYPE_NUMBER, PROP_DEFAULT, ZFS_TYPE_POOL, "DEDUPDITTO");
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PROP_TYPE_NUMBER, PROP_DEFAULT, ZFS_TYPE_POOL, "DEDUPDITTO",
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sfeatures);
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zfs_mod_list_supported_free(sfeatures);
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}
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/*
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@@ -283,102 +298,110 @@ vdev_prop_init(void)
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{ NULL }
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};
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struct zfs_mod_supported_features *sfeatures =
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zfs_mod_list_supported(ZFS_SYSFS_VDEV_PROPERTIES);
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/* string properties */
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zprop_register_string(VDEV_PROP_COMMENT, "comment", NULL,
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PROP_DEFAULT, ZFS_TYPE_VDEV, "<comment-string>", "COMMENT");
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PROP_DEFAULT, ZFS_TYPE_VDEV, "<comment-string>", "COMMENT",
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sfeatures);
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zprop_register_string(VDEV_PROP_PATH, "path", NULL,
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PROP_DEFAULT, ZFS_TYPE_VDEV, "<device-path>", "PATH");
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PROP_DEFAULT, ZFS_TYPE_VDEV, "<device-path>", "PATH", sfeatures);
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zprop_register_string(VDEV_PROP_DEVID, "devid", NULL,
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PROP_READONLY, ZFS_TYPE_VDEV, "<devid>", "DEVID");
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PROP_READONLY, ZFS_TYPE_VDEV, "<devid>", "DEVID", sfeatures);
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zprop_register_string(VDEV_PROP_PHYS_PATH, "physpath", NULL,
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PROP_READONLY, ZFS_TYPE_VDEV, "<physpath>", "PHYSPATH");
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PROP_READONLY, ZFS_TYPE_VDEV, "<physpath>", "PHYSPATH", sfeatures);
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zprop_register_string(VDEV_PROP_ENC_PATH, "encpath", NULL,
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PROP_READONLY, ZFS_TYPE_VDEV, "<encpath>", "ENCPATH");
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PROP_READONLY, ZFS_TYPE_VDEV, "<encpath>", "ENCPATH", sfeatures);
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zprop_register_string(VDEV_PROP_FRU, "fru", NULL,
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PROP_READONLY, ZFS_TYPE_VDEV, "<fru>", "FRU");
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PROP_READONLY, ZFS_TYPE_VDEV, "<fru>", "FRU", sfeatures);
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zprop_register_string(VDEV_PROP_PARENT, "parent", NULL,
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PROP_READONLY, ZFS_TYPE_VDEV, "<parent>", "PARENT");
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PROP_READONLY, ZFS_TYPE_VDEV, "<parent>", "PARENT", sfeatures);
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zprop_register_string(VDEV_PROP_CHILDREN, "children", NULL,
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PROP_READONLY, ZFS_TYPE_VDEV, "<child[,...]>", "CHILDREN");
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PROP_READONLY, ZFS_TYPE_VDEV, "<child[,...]>", "CHILDREN",
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sfeatures);
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/* readonly number properties */
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zprop_register_number(VDEV_PROP_SIZE, "size", 0, PROP_READONLY,
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ZFS_TYPE_VDEV, "<size>", "SIZE");
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ZFS_TYPE_VDEV, "<size>", "SIZE", sfeatures);
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zprop_register_number(VDEV_PROP_FREE, "free", 0, PROP_READONLY,
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ZFS_TYPE_VDEV, "<size>", "FREE");
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ZFS_TYPE_VDEV, "<size>", "FREE", sfeatures);
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zprop_register_number(VDEV_PROP_ALLOCATED, "allocated", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<size>", "ALLOC");
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PROP_READONLY, ZFS_TYPE_VDEV, "<size>", "ALLOC", sfeatures);
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zprop_register_number(VDEV_PROP_EXPANDSZ, "expandsize", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<size>", "EXPANDSZ");
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PROP_READONLY, ZFS_TYPE_VDEV, "<size>", "EXPANDSZ", sfeatures);
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zprop_register_number(VDEV_PROP_FRAGMENTATION, "fragmentation", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<percent>", "FRAG");
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PROP_READONLY, ZFS_TYPE_VDEV, "<percent>", "FRAG", sfeatures);
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zprop_register_number(VDEV_PROP_CAPACITY, "capacity", 0, PROP_READONLY,
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ZFS_TYPE_VDEV, "<size>", "CAP");
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ZFS_TYPE_VDEV, "<size>", "CAP", sfeatures);
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zprop_register_number(VDEV_PROP_GUID, "guid", 0, PROP_READONLY,
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ZFS_TYPE_VDEV, "<guid>", "GUID");
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ZFS_TYPE_VDEV, "<guid>", "GUID", sfeatures);
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zprop_register_number(VDEV_PROP_STATE, "state", 0, PROP_READONLY,
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ZFS_TYPE_VDEV, "<state>", "STATE");
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ZFS_TYPE_VDEV, "<state>", "STATE", sfeatures);
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zprop_register_number(VDEV_PROP_BOOTSIZE, "bootsize", 0, PROP_READONLY,
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ZFS_TYPE_VDEV, "<size>", "BOOTSIZE");
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ZFS_TYPE_VDEV, "<size>", "BOOTSIZE", sfeatures);
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zprop_register_number(VDEV_PROP_ASIZE, "asize", 0, PROP_READONLY,
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ZFS_TYPE_VDEV, "<asize>", "ASIZE");
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ZFS_TYPE_VDEV, "<asize>", "ASIZE", sfeatures);
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zprop_register_number(VDEV_PROP_PSIZE, "psize", 0, PROP_READONLY,
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ZFS_TYPE_VDEV, "<psize>", "PSIZE");
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ZFS_TYPE_VDEV, "<psize>", "PSIZE", sfeatures);
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zprop_register_number(VDEV_PROP_ASHIFT, "ashift", 0, PROP_READONLY,
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ZFS_TYPE_VDEV, "<ashift>", "ASHIFT");
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ZFS_TYPE_VDEV, "<ashift>", "ASHIFT", sfeatures);
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zprop_register_number(VDEV_PROP_PARITY, "parity", 0, PROP_READONLY,
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ZFS_TYPE_VDEV, "<parity>", "PARITY");
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ZFS_TYPE_VDEV, "<parity>", "PARITY", sfeatures);
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zprop_register_number(VDEV_PROP_NUMCHILDREN, "numchildren", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<number-of-children>", "NUMCHILD");
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PROP_READONLY, ZFS_TYPE_VDEV, "<number-of-children>", "NUMCHILD",
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sfeatures);
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zprop_register_number(VDEV_PROP_READ_ERRORS, "read_errors", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<errors>", "RDERR");
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PROP_READONLY, ZFS_TYPE_VDEV, "<errors>", "RDERR", sfeatures);
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zprop_register_number(VDEV_PROP_WRITE_ERRORS, "write_errors", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<errors>", "WRERR");
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PROP_READONLY, ZFS_TYPE_VDEV, "<errors>", "WRERR", sfeatures);
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zprop_register_number(VDEV_PROP_CHECKSUM_ERRORS, "checksum_errors", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<errors>", "CKERR");
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PROP_READONLY, ZFS_TYPE_VDEV, "<errors>", "CKERR", sfeatures);
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zprop_register_number(VDEV_PROP_INITIALIZE_ERRORS,
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"initialize_errors", 0, PROP_READONLY, ZFS_TYPE_VDEV, "<errors>",
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"INITERR");
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"INITERR", sfeatures);
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zprop_register_number(VDEV_PROP_OPS_NULL, "null_ops", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<operations>", "NULLOP");
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PROP_READONLY, ZFS_TYPE_VDEV, "<operations>", "NULLOP", sfeatures);
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zprop_register_number(VDEV_PROP_OPS_READ, "read_ops", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<operations>", "READOP");
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PROP_READONLY, ZFS_TYPE_VDEV, "<operations>", "READOP", sfeatures);
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zprop_register_number(VDEV_PROP_OPS_WRITE, "write_ops", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<operations>", "WRITEOP");
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PROP_READONLY, ZFS_TYPE_VDEV, "<operations>", "WRITEOP", sfeatures);
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zprop_register_number(VDEV_PROP_OPS_FREE, "free_ops", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<operations>", "FREEOP");
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PROP_READONLY, ZFS_TYPE_VDEV, "<operations>", "FREEOP", sfeatures);
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zprop_register_number(VDEV_PROP_OPS_CLAIM, "claim_ops", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<operations>", "CLAIMOP");
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PROP_READONLY, ZFS_TYPE_VDEV, "<operations>", "CLAIMOP", sfeatures);
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zprop_register_number(VDEV_PROP_OPS_TRIM, "trim_ops", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<operations>", "TRIMOP");
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PROP_READONLY, ZFS_TYPE_VDEV, "<operations>", "TRIMOP", sfeatures);
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zprop_register_number(VDEV_PROP_BYTES_NULL, "null_bytes", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<bytes>", "NULLBYTE");
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PROP_READONLY, ZFS_TYPE_VDEV, "<bytes>", "NULLBYTE", sfeatures);
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zprop_register_number(VDEV_PROP_BYTES_READ, "read_bytes", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<bytes>", "READBYTE");
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PROP_READONLY, ZFS_TYPE_VDEV, "<bytes>", "READBYTE", sfeatures);
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zprop_register_number(VDEV_PROP_BYTES_WRITE, "write_bytes", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<bytes>", "WRITEBYTE");
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PROP_READONLY, ZFS_TYPE_VDEV, "<bytes>", "WRITEBYTE", sfeatures);
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zprop_register_number(VDEV_PROP_BYTES_FREE, "free_bytes", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<bytes>", "FREEBYTE");
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PROP_READONLY, ZFS_TYPE_VDEV, "<bytes>", "FREEBYTE", sfeatures);
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zprop_register_number(VDEV_PROP_BYTES_CLAIM, "claim_bytes", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<bytes>", "CLAIMBYTE");
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PROP_READONLY, ZFS_TYPE_VDEV, "<bytes>", "CLAIMBYTE", sfeatures);
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zprop_register_number(VDEV_PROP_BYTES_TRIM, "trim_bytes", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "<bytes>", "TRIMBYTE");
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PROP_READONLY, ZFS_TYPE_VDEV, "<bytes>", "TRIMBYTE", sfeatures);
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/* default numeric properties */
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/* default index (boolean) properties */
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zprop_register_index(VDEV_PROP_REMOVING, "removing", 0,
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PROP_READONLY, ZFS_TYPE_VDEV, "on | off", "REMOVING",
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boolean_table);
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boolean_table, sfeatures);
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zprop_register_index(VDEV_PROP_ALLOCATING, "allocating", 1,
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PROP_DEFAULT, ZFS_TYPE_VDEV, "on | off", "ALLOCATING",
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boolean_na_table);
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boolean_na_table, sfeatures);
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/* default index properties */
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/* hidden properties */
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zprop_register_hidden(VDEV_PROP_NAME, "name", PROP_TYPE_STRING,
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PROP_READONLY, ZFS_TYPE_VDEV, "NAME");
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PROP_READONLY, ZFS_TYPE_VDEV, "NAME", sfeatures);
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zfs_mod_list_supported_free(sfeatures);
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}
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/*
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