To bring us up to date now, on the OsX and Windows platforms, I have
(internally) made the following reservations as compared to ZOL;
We have no additional command-line options.
File flags (zfs_znode.h)
+ /* Unsure how we officially register new flags bits, but
+ * I guess we will claim the whole nibble for OSX
+ * 0x00n0000000000000ull : n = 1 2 4 8
+ */
+#define ZFS_TRACKED 0x0010000000000000ull
+#define ZFS_COMPRESSED 0x0020000000000000ull
+#define ZFS_SIMMUTABLE 0x0040000000000000ull
+#define ZFS_SAPPENDONLY 0x0080000000000000ull
Although the UF_COMPRESSED might be a confusing name, it refers to HFS
decmpfs compression, that we (have to) track, and undo (asap!). The flag
can most likely be removed if the code is re-organised.
On Windows we have:
+ /* Unsure how we officially register new flags bits, but
+ * I guess we will claim the whole nibble for Windows
+ * 0x0n00000000000000ull : n = 1 2 4 8
+ */
+#define ZFS_REPARSEPOINT 0x0100000000000000ull
With ioctl codes, Linux reserved +0x80 and FreeBSD +0xC0. I took +0xD0 for
OsX and +0xE0 for Windows.
ZFS_IOC_PROXY_DATASET = ('Z' << 8) + 0xD0,
ZFS_IOC_MOUNT = CTL_CODE(ZFSIOCTL_TYPE, 0x8E0
ZFS_IOC_UNMOUNT = CTL_CODE(ZFSIOCTL_TYPE, 0x8E1
ZFS_IOC_UNREGISTER_FS = CTL_CODE(ZFSIOCTL_TYPE, 0x8E2
I believe SA, zfs prop and zpool props do not affect on disk format, but we
define;
ZPL_DXATTR,
+ ZPL_ADDTIME,
+ ZPL_DOCUMENTID,
ZPL_END
These all have manpage changes.
zprop_register_string(ZFS_PROP_SHAREAFP, "shareafp"
zprop_register_index(ZFS_PROP_APPLE_BROWSE, "com.apple.browse"
zprop_register_index(ZFS_PROP_APPLE_IGNOREOWNER, "com.apple.ignoreowner"
zprop_register_hidden(ZFS_PROP_APPLE_LASTUNMOUNT,"COM.APPLE.LASTUNMOUNT"
zprop_register_index(ZFS_PROP_APPLE_MIMIC_HFS, "com.apple.mimic_hfs"
zprop_register_index(ZFS_PROP_APPLE_DEVDISK, "com.apple.devdisk"
zprop_register_string(ZFS_PROP_DRIVELETTER, "driveletter"
Since there is no (easy) way to do automounted snapshot mounting, we have
extended the "zfs mount" (and unmount) commands to also accept snapshots.
Ie, "zfs mount pool/dataset@snapshot". The mountpoint location is the same.
I may have missed a bunch :)
Lund
--
Jorgen Lundman | <[email protected]>
Unix Administrator | +81 (0)90-5578-8500
Shibuya-ku, Tokyo | Japan
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