(* 'df' command for virtual domains.
- * $Id$
+ (C) Copyright 2007-2008 Richard W.M. Jones, Red Hat Inc.
+ http://libvirt.org/
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*)
open Printf
open ExtList
+open Unix
+
+open Virt_df_gettext.Gettext
module C = Libvirt.Connect
module D = Libvirt.Domain
-module N = Libvirt.Network
-let uri = ref None
+(* If set to true, then emit lots of debugging information. *)
+let debug = true
-let () =
- (* Command line argument parsing. *)
- let set_uri = function "" -> uri := None | u -> uri := Some u in
+(* Int32 infix operators for convenience. *)
+let ( +* ) = Int32.add
+let ( -* ) = Int32.sub
+let ( ** ) = Int32.mul
+let ( /* ) = Int32.div
- let argspec = Arg.align [
- "-c", Arg.String set_uri, "uri Connect to URI (default: Xen)";
- "--connect", Arg.String set_uri, "uri Connect to URI (default: Xen)";
- ] in
+(* Int64 infix operators for convenience. *)
+let ( +^ ) = Int64.add
+let ( -^ ) = Int64.sub
+let ( *^ ) = Int64.mul
+let ( /^ ) = Int64.div
- let anon_fun str = raise (Arg.Bad (str ^ ": unknown parameter")) in
- let usage_msg = "virt-df : like 'df', shows disk space used in guests
+(* State of command line arguments. *)
+let uri = ref None (* Hypervisor/libvirt URI. *)
+let inodes = ref false (* Display inodes. *)
+let human = ref false (* Display human-readable. *)
+let all = ref false (* Show all/active domains. *)
+let test_files = ref [] (* Used for test mode only. *)
-SUMMARY
- virt-df [-options]
+(*----------------------------------------------------------------------*)
+(* The "domain/device model" that we currently understand looks
+ * like this:
+ *
+ * domains
+ * |
+ * \--- host partitions / disk image files
+ * ||
+ * guest block devices
+ * |
+ * +--> guest partitions (eg. using MBR)
+ * | |
+ * \-(1)->+--- filesystems (eg. ext3)
+ * |
+ * \--- PVs for LVM
+ * |||
+ * VGs and LVs
+ *
+ * (1) Filesystems and PVs may also appear directly on guest
+ * block devices.
+ *
+ * Partition schemes (eg. MBR) and filesystems register themselves
+ * with this main module and they are queried first to get an idea
+ * of the physical devices, partitions and filesystems potentially
+ * available to the guest.
+ *
+ * Volume management schemes (eg. LVM) register themselves here
+ * and are called later with "spare" physical devices and partitions
+ * to see if they contain LVM data. If this results in additional
+ * logical volumes then these are checked for filesystems.
+ *
+ * Swap space is considered to be a dumb filesystem for the purposes
+ * of this discussion.
+ *)
-OPTIONS" in
+(* A virtual (or physical!) device, encapsulating any translation
+ * that has to be done to access the device. eg. For partitions
+ * there is a simple offset, but for LVM you may need complicated
+ * table lookups.
+ *
+ * We keep the underlying file descriptors open for the duration
+ * of the program. There aren't likely to be many of them, and
+ * the program is short-lived, and it's easier than trying to
+ * track which device is using what fd. As a result, there is no
+ * need for any close/deallocation function.
+ *
+ * Note the very rare use of OOP in OCaml!
+ *)
+class virtual device =
+object (self)
+ method virtual read : int64 -> int -> string
+ method virtual size : int64
+ method virtual name : string
- Arg.parse argspec anon_fun usage_msg
-
-let xmls =
- (* Connect to the hypervisor. *)
- let conn =
- let name = !uri in
- try C.connect_readonly ?name ()
- with
- Libvirt.Virterror err ->
- prerr_endline (Libvirt.Virterror.to_string err);
- (* If non-root and no explicit connection URI, print a warning. *)
- if Unix.geteuid () <> 0 && name = None then (
- print_endline "NB: If you want to monitor a local Xen hypervisor, you usually need to be root";
- );
- exit 1 in
-
- (* Get the list of active & inactive domains. *)
- let doms =
- let nr_active_doms = C.num_of_domains conn in
- let active_doms = Array.to_list (C.list_domains conn nr_active_doms) in
- let active_doms = List.map (D.lookup_by_id conn) active_doms in
- let nr_inactive_doms = C.num_of_defined_domains conn in
- let inactive_doms =
- Array.to_list (C.list_defined_domains conn nr_inactive_doms) in
- let inactive_doms = List.map (D.lookup_by_name conn) inactive_doms in
- active_doms @ inactive_doms in
-
- (* Get their XML. *)
- let xmls = List.map D.get_xml_desc doms in
-
- (* Parse the XML. *)
- let xmls = List.map Xml.parse_string xmls in
-
- (* Return just the XML documents - everything else will be closed
- * and freed including the connection to the hypervisor.
- *)
- xmls
+ (* Helper method to read a chunk of data into a bitstring. *)
+ method read_bitstring offset len =
+ let str = self#read offset len in
+ (str, 0, len * 8)
+end
+
+(* A concrete device which just direct-maps a file or /dev device. *)
+class block_device filename =
+ let fd = openfile filename [ O_RDONLY ] 0 in
+ let size = (LargeFile.fstat fd).LargeFile.st_size in
+object (self)
+ inherit device
+ method read offset len =
+ ignore (LargeFile.lseek fd offset SEEK_SET);
+ let str = String.make len '\000' in
+ read fd str 0 len;
+ str
+ method size = size
+ method name = filename
+end
+
+(* A null device. Any attempt to read generates an error. *)
+let null_device : device =
+object
+ inherit device
+ method read _ _ = assert false
+ method size = 0L
+ method name = "null"
+end
+
+(* Domains and candidate guest block devices. *)
-(* Parse out the device XML to get the names of disks. *)
type domain = {
dom_name : string; (* Domain name. *)
dom_id : int option; (* Domain ID (if running). *)
dom_disks : disk list; (* Domain disks. *)
}
and disk = {
+ (* From the XML ... *)
d_type : string option; (* The <disk type=...> *)
- d_device : string option; (* The <disk device=...> *)
- d_file : string option; (* The <source file=...> *)
- d_dev : string option; (* The <target dev=...> *)
+ d_device : string; (* The <disk device=...> (eg "disk") *)
+ d_source : string; (* The <source file=... or dev> *)
+ d_target : string; (* The <target dev=...> (eg "hda") *)
+
+ (* About the device itself. *)
+ d_dev : device; (* Disk device. *)
+ d_content : disk_content; (* What's on it. *)
}
+and disk_content =
+ [ `Unknown (* Not probed or unknown. *)
+ | `Partitions of partitions (* Contains partitions. *)
+ | `Filesystem of filesystem (* Contains a filesystem directly. *)
+ | `PhysicalVolume of unit (* Contains an LVM PV. *)
+ ]
-let doms : domain list =
- (* Grr.. Need to use a library which has XPATH support (or cduce). *)
- List.map (
- fun xml ->
- let nodes, domain_attrs =
- match xml with
- | Xml.Element ("domain", attrs, children) -> children, attrs
- | _ -> failwith "get_xml_desc didn't return <domain/>" in
-
- let domid =
- try Some (int_of_string (List.assoc "id" domain_attrs))
- with Not_found -> None in
-
- let rec loop = function
- | [] ->
- failwith "get_xml_desc returned no <name> node in XML"
- | Xml.Element ("name", _, [Xml.PCData name]) :: _ -> name
- | Xml.Element ("name", _, _) :: _ ->
- failwith "get_xml_desc returned strange <name> node"
- | _ :: rest -> loop rest
- in
- let name = loop nodes in
-
- let devices =
- let devices =
- List.filter_map (
- function
- | Xml.Element ("devices", _, devices) -> Some devices
- | _ -> None
- ) nodes in
- List.concat devices in
-
- let rec target_dev_of = function
- | [] -> None
- | Xml.Element ("target", attrs, _) :: rest ->
- (try Some (List.assoc "dev" attrs)
- with Not_found -> target_dev_of rest)
- | _ :: rest -> target_dev_of rest
- in
-
- let rec source_file_of = function
- | [] -> None
- | Xml.Element ("source", attrs, _) :: rest ->
- (try Some (List.assoc "file" attrs)
- with Not_found -> source_file_of rest)
- | _ :: rest -> source_file_of rest
- in
-
- let disks =
- List.filter_map (
- function
- | Xml.Element ("disk", attrs, children) ->
- let typ =
- try Some (List.assoc "type" attrs)
- with Not_found -> None in
- let device =
- try Some (List.assoc "device" attrs)
- with Not_found -> None in
- let file = source_file_of children in
- let dev = target_dev_of children in
-
- Some {
- d_type = typ; d_device = device; d_file = file; d_dev = dev
+(* Partitions. *)
+
+and partitions = {
+ parts_name : string; (* Name of partitioning scheme. *)
+ parts : partition list (* Partitions. *)
+}
+and partition = {
+ part_status : partition_status; (* Bootable, etc. *)
+ part_type : int; (* Partition filesystem type. *)
+ part_dev : device; (* Partition device. *)
+ part_content : partition_content; (* What's on it. *)
+}
+and partition_status = Bootable | Nonbootable | Malformed | NullEntry
+and partition_content =
+ [ `Unknown (* Not probed or unknown. *)
+ | `Filesystem of filesystem (* Filesystem. *)
+ | `PhysicalVolume of unit (* Contains an LVM PV. *)
+ ]
+
+(* Filesystems (also swap devices). *)
+and filesystem = {
+ fs_name : string; (* Name of filesystem. *)
+ fs_block_size : int64; (* Block size (bytes). *)
+ fs_blocks_total : int64; (* Total blocks. *)
+ fs_is_swap : bool; (* If swap, following not valid. *)
+ fs_blocks_reserved : int64; (* Blocks reserved for super-user. *)
+ fs_blocks_avail : int64; (* Blocks free (available). *)
+ fs_blocks_used : int64; (* Blocks in use. *)
+ fs_inodes_total : int64; (* Total inodes. *)
+ fs_inodes_reserved : int64; (* Inodes reserved for super-user. *)
+ fs_inodes_avail : int64; (* Inodes free (available). *)
+ fs_inodes_used : int64; (* Inodes in use. *)
+}
+
+(* Convert partition, filesystem types to printable strings for debugging. *)
+let string_of_partition
+ { part_status = status; part_type = typ; part_dev = dev } =
+ sprintf "%s: %s partition type %d"
+ dev#name
+ (match status with
+ | Bootable -> "bootable"
+ | Nonbootable -> "nonbootable"
+ | Malformed -> "malformed"
+ | NullEntry -> "empty")
+ typ
+
+let string_of_filesystem { fs_name = name; fs_is_swap = swap } =
+ if not swap then name
+ else name ^ " [swap]"
+
+(* Register a partition scheme. *)
+let partition_types = ref []
+let partition_type_register (parts_name : string) probe_fn =
+ partition_types := (parts_name, probe_fn) :: !partition_types
+
+(* Probe a device for partitions. Returns [Some parts] or [None]. *)
+let probe_for_partitions dev =
+ if debug then eprintf "probing for partitions on %s ...\n%!" dev#name;
+ let rec loop = function
+ | [] -> None
+ | (parts_name, probe_fn) :: rest ->
+ try Some (probe_fn dev)
+ with Not_found -> loop rest
+ in
+ let r = loop !partition_types in
+ if debug then (
+ match r with
+ | None -> eprintf "no partitions found on %s\n%!" dev#name
+ | Some { parts_name = name; parts = parts } ->
+ eprintf "found %d %s partitions on %s:\n"
+ (List.length parts) name dev#name;
+ List.iter (fun p -> eprintf "\t%s\n%!" (string_of_partition p)) parts
+ );
+ r
+
+(* Register a filesystem type (or swap). *)
+let filesystem_types = ref []
+let filesystem_type_register (fs_name : string) probe_fn =
+ filesystem_types := (fs_name, probe_fn) :: !filesystem_types
+
+(* Probe a device for filesystems. Returns [Some fs] or [None]. *)
+let probe_for_filesystems dev =
+ if debug then eprintf "probing for a filesystem on %s ...\n%!" dev#name;
+ let rec loop = function
+ | [] -> None
+ | (fs_name, probe_fn) :: rest ->
+ try Some (probe_fn dev)
+ with Not_found -> loop rest
+ in
+ let r = loop !filesystem_types in
+ if debug then (
+ match r with
+ | None -> eprintf "no filesystem found on %s\n%!" dev#name
+ | Some fs ->
+ eprintf "found a filesystem on %s:\n" dev#name;
+ eprintf "\t%s\n%!" (string_of_filesystem fs)
+ );
+ r
+
+(* Register a volume management type. *)
+(*
+let lvm_types = ref []
+let lvm_type_register (lvm_name : string) probe_fn =
+ lvm_types := (lvm_name, probe_fn) :: !lvm_types
+*)
+
+(*----------------------------------------------------------------------*)
+
+let main () =
+ (* Command line argument parsing. *)
+ let set_uri = function "" -> uri := None | u -> uri := Some u in
+
+ let version () =
+ printf "virt-df %s\n" (Libvirt_version.version);
+
+ let major, minor, release =
+ let v, _ = Libvirt.get_version () in
+ v / 1_000_000, (v / 1_000) mod 1_000, v mod 1_000 in
+ printf "libvirt %d.%d.%d\n" major minor release;
+ exit 0
+ in
+
+ let test_mode filename =
+ test_files := filename :: !test_files
+ in
+
+ let argspec = Arg.align [
+ "-a", Arg.Set all,
+ " " ^ s_ "Show all domains (default: only active domains)";
+ "--all", Arg.Set all,
+ " " ^ s_ "Show all domains (default: only active domains)";
+ "-c", Arg.String set_uri,
+ "uri " ^ s_ "Connect to URI (default: Xen)";
+ "--connect", Arg.String set_uri,
+ "uri " ^ s_ "Connect to URI (default: Xen)";
+ "-h", Arg.Set human,
+ " " ^ s_ "Print sizes in human-readable format";
+ "--human-readable", Arg.Set human,
+ " " ^ s_ "Print sizes in human-readable format";
+ "-i", Arg.Set inodes,
+ " " ^ s_ "Show inodes instead of blocks";
+ "--inodes", Arg.Set inodes,
+ " " ^ s_ "Show inodes instead of blocks";
+ "-t", Arg.String test_mode,
+ "dev" ^ s_ "(Test mode) Display contents of block device or file";
+ "--version", Arg.Unit version,
+ " " ^ s_ "Display version and exit";
+ ] in
+
+ let anon_fun str =
+ raise (Arg.Bad (sprintf (f_ "%s: unknown parameter") str)) in
+ let usage_msg = s_ "virt-df : like 'df', shows disk space used in guests
+
+SUMMARY
+ virt-df [-options]
+
+OPTIONS" in
+
+ Arg.parse argspec anon_fun usage_msg;
+
+ let doms : domain list =
+ if !test_files = [] then (
+ let xmls =
+ (* Connect to the hypervisor. *)
+ let conn =
+ let name = !uri in
+ try C.connect_readonly ?name ()
+ with
+ Libvirt.Virterror err ->
+ prerr_endline (Libvirt.Virterror.to_string err);
+ (* If non-root and no explicit connection URI, print a warning. *)
+ if geteuid () <> 0 && name = None then (
+ print_endline (s_ "NB: If you want to monitor a local Xen hypervisor, you usually need to be root");
+ );
+ exit 1 in
+
+ (* Get the list of active & inactive domains. *)
+ let doms =
+ let nr_active_doms = C.num_of_domains conn in
+ let active_doms =
+ Array.to_list (C.list_domains conn nr_active_doms) in
+ let active_doms =
+ List.map (D.lookup_by_id conn) active_doms in
+ if not !all then
+ active_doms
+ else (
+ let nr_inactive_doms = C.num_of_defined_domains conn in
+ let inactive_doms =
+ Array.to_list (C.list_defined_domains conn nr_inactive_doms) in
+ let inactive_doms =
+ List.map (D.lookup_by_name conn) inactive_doms in
+ active_doms @ inactive_doms
+ ) in
+
+ (* Get their XML. *)
+ let xmls = List.map D.get_xml_desc doms in
+
+ (* Parse the XML. *)
+ let xmls = List.map Xml.parse_string xmls in
+
+ (* Return just the XML documents - everything else will be closed
+ * and freed including the connection to the hypervisor.
+ *)
+ xmls in
+
+ (* Grr.. Need to use a library which has XPATH support (or cduce). *)
+ List.map (
+ fun xml ->
+ let nodes, domain_attrs =
+ match xml with
+ | Xml.Element ("domain", attrs, children) -> children, attrs
+ | _ -> failwith (s_ "get_xml_desc didn't return <domain/>") in
+
+ let domid =
+ try Some (int_of_string (List.assoc "id" domain_attrs))
+ with Not_found -> None in
+
+ let rec loop = function
+ | [] ->
+ failwith (s_ "get_xml_desc returned no <name> node in XML")
+ | Xml.Element ("name", _, [Xml.PCData name]) :: _ -> name
+ | Xml.Element ("name", _, _) :: _ ->
+ failwith (s_ "get_xml_desc returned strange <name> node")
+ | _ :: rest -> loop rest
+ in
+ let name = loop nodes in
+
+ let devices =
+ let devices =
+ List.filter_map (
+ function
+ | Xml.Element ("devices", _, devices) -> Some devices
+ | _ -> None
+ ) nodes in
+ List.concat devices in
+
+ let rec target_dev_of = function
+ | [] -> None
+ | Xml.Element ("target", attrs, _) :: rest ->
+ (try Some (List.assoc "dev" attrs)
+ with Not_found -> target_dev_of rest)
+ | _ :: rest -> target_dev_of rest
+ in
+
+ let rec source_file_of = function
+ | [] -> None
+ | Xml.Element ("source", attrs, _) :: rest ->
+ (try Some (List.assoc "file" attrs)
+ with Not_found -> source_file_of rest)
+ | _ :: rest -> source_file_of rest
+ in
+
+ let rec source_dev_of = function
+ | [] -> None
+ | Xml.Element ("source", attrs, _) :: rest ->
+ (try Some (List.assoc "dev" attrs)
+ with Not_found -> source_dev_of rest)
+ | _ :: rest -> source_dev_of rest
+ in
+
+ let disks =
+ List.filter_map (
+ function
+ | Xml.Element ("disk", attrs, children) ->
+ let typ =
+ try Some (List.assoc "type" attrs)
+ with Not_found -> None in
+ let device =
+ try Some (List.assoc "device" attrs)
+ with Not_found -> None in
+ let source =
+ match source_file_of children with
+ | (Some _) as source -> source
+ | None -> source_dev_of children in
+ let target = target_dev_of children in
+
+ (* We only care about devices where we have
+ * source and target. Ignore CD-ROM devices.
+ *)
+ (match source, target, device with
+ | _, _, Some "cdrom" -> None (* ignore *)
+ | Some source, Some target, Some device ->
+ (* Try to create a 'device' object for this
+ * device. If it fails, print a warning
+ * and ignore the device.
+ *)
+ (try
+ let dev = new block_device source in
+ Some {
+ d_type = typ; d_device = device;
+ d_source = source; d_target = target;
+ d_dev = dev; d_content = `Unknown
+ }
+ with
+ Unix_error (err, func, param) ->
+ eprintf "%s:%s: %s" func param (error_message err);
+ None
+ )
+ | _ -> None (* ignore anything else *)
+ )
+
+ | _ -> None
+ ) devices in
+
+ { dom_name = name; dom_id = domid; dom_disks = disks }
+ ) xmls
+ ) else (
+ (* In test mode (-t option) the user can pass one or more
+ * block devices or filenames (containing partitions/filesystems/etc)
+ * which we use for testing virt-df itself. We create fake domains
+ * from these.
+ *)
+ List.map (
+ fun filename ->
+ {
+ dom_name = filename; dom_id = None;
+ dom_disks = [
+ {
+ d_type = Some "disk"; d_device = "disk";
+ d_source = filename; d_target = "hda";
+ d_dev = new block_device filename; d_content = `Unknown;
}
- | _ -> None
- ) devices in
-
- { dom_name = name; dom_id = domid; dom_disks = disks }
- ) xmls
-
-(* Print the domains / devices. *)
-let () =
- List.iter (
- fun { dom_name = dom_name; dom_disks = dom_disks } ->
- printf "%s:\n" dom_name;
- List.iter (
- function
- | { d_file = Some file; d_dev = Some dev } ->
- printf "\t%s -> %s\n" file dev
- | _ ->
- printf "\t(device omitted, missing <source> or <target> in XML\n";
- ) dom_disks
- ) doms
+ ]
+ }
+ ) !test_files
+ ) in
+
+ (* HOF to map over disks. *)
+ let map_over_disks doms f =
+ List.map (
+ fun ({ dom_disks = disks } as dom) ->
+ let disks = List.map f disks in
+ { dom with dom_disks = disks }
+ ) doms
+ in
+
+ (* 'doms' is our list of domains and their guest block devices, and
+ * we've successfully opened each block device. Now probe them
+ * to find out what they contain.
+ *)
+ let doms = map_over_disks doms (
+ fun ({ d_dev = dev } as disk) ->
+ (* See if it is partitioned first. *)
+ let parts = probe_for_partitions dev in
+ match parts with
+ | Some parts ->
+ { disk with d_content = `Partitions parts }
+ | None ->
+ (* Not partitioned. Does it contain a filesystem? *)
+ let fs = probe_for_filesystems dev in
+ match fs with
+ | Some fs ->
+ { disk with d_content = `Filesystem fs }
+ | None ->
+ (* Not partitioned, no filesystem, so it's spare. *)
+ disk
+ ) in
+
+ (* Now we have either detected partitions or a filesystem on each
+ * physical device (or perhaps neither). See what is on those
+ * partitions.
+ *)
+ let doms = map_over_disks doms (
+ function
+ | ({ d_dev = dev; d_content = `Partitions parts } as disk) ->
+ let ps = List.map (
+ fun p ->
+ if p.part_status = Bootable || p.part_status = Nonbootable then (
+ let fs = probe_for_filesystems p.part_dev in
+ match fs with
+ | Some fs ->
+ { p with part_content = `Filesystem fs }
+ | None ->
+ p
+ ) else p
+ ) parts.parts in
+ let parts = { parts with parts = ps } in
+ { disk with d_content = `Partitions parts }
+ | disk -> disk
+ ) in
+
+ (* XXX LVM stuff here. *)
+
+
+
+ (* Print the title. *)
+ let () =
+ let total, used, avail =
+ match !inodes, !human with
+ | false, false -> s_ "1K-blocks", s_ "Used", s_ "Available"
+ | false, true -> s_ "Size", s_ "Used", s_ "Available"
+ | true, _ -> s_ "Inodes", s_ "IUse", s_ "IFree" in
+ printf "%-20s %10s %10s %10s %s\n%!"
+ (s_ "Filesystem") total used avail (s_ "Type") in
+
+ let printable_size bytes =
+ if bytes < 1024L *^ 1024L then
+ sprintf "%Ld bytes" bytes
+ else if bytes < 1024L *^ 1024L *^ 1024L then
+ sprintf "%.1f MiB" (Int64.to_float (bytes /^ 1024L) /. 1024.)
+ else
+ sprintf "%.1f GiB" (Int64.to_float (bytes /^ 1024L /^ 1024L) /. 1024.)
+ in
+
+ (* HOF to iterate over filesystems. *)
+ let iter_over_filesystems doms f =
+ List.iter (
+ fun ({ dom_disks = disks } as dom) ->
+ List.iter (
+ function
+ | ({ d_content = `Filesystem fs } as disk) ->
+ f dom disk None fs
+ | ({ d_content = `Partitions partitions } as disk) ->
+ List.iteri (
+ fun i ->
+ function
+ | ({ part_content = `Filesystem fs } as part) ->
+ f dom disk (Some (part, i)) fs
+ | _ -> ()
+ ) partitions.parts
+ | _ -> ()
+ ) disks
+ ) doms
+ in
+
+ (* Print stats for each recognized filesystem. *)
+ let print_stats dom disk part fs =
+ (* Printable name is like "domain:hda" or "domain:hda1". *)
+ let name =
+ let dom_name = dom.dom_name in
+ let d_target = disk.d_target in
+ match part with
+ | None ->
+ dom_name ^ ":" ^ d_target
+ | Some (_, pnum) ->
+ dom_name ^ ":" ^ d_target ^ string_of_int pnum in
+ printf "%-20s " name;
+
+ if fs.fs_is_swap then (
+ (* Swap partition. *)
+ if not !human then
+ printf "%10Ld %s\n"
+ (fs.fs_block_size *^ fs.fs_blocks_total /^ 1024L) fs.fs_name
+ else
+ printf "%10s %s\n"
+ (printable_size (fs.fs_block_size *^ fs.fs_blocks_total)) fs.fs_name
+ ) else (
+ (* Ordinary filesystem. *)
+ if not !inodes then ( (* Block display. *)
+ (* 'df' doesn't count the restricted blocks. *)
+ let blocks_total = fs.fs_blocks_total -^ fs.fs_blocks_reserved in
+ let blocks_avail = fs.fs_blocks_avail -^ fs.fs_blocks_reserved in
+ let blocks_avail = if blocks_avail < 0L then 0L else blocks_avail in
+
+ if not !human then ( (* Display 1K blocks. *)
+ printf "%10Ld %10Ld %10Ld %s\n"
+ (blocks_total *^ fs.fs_block_size /^ 1024L)
+ (fs.fs_blocks_used *^ fs.fs_block_size /^ 1024L)
+ (blocks_avail *^ fs.fs_block_size /^ 1024L)
+ fs.fs_name
+ ) else ( (* Human-readable blocks. *)
+ printf "%10s %10s %10s %s\n"
+ (printable_size (blocks_total *^ fs.fs_block_size))
+ (printable_size (fs.fs_blocks_used *^ fs.fs_block_size))
+ (printable_size (blocks_avail *^ fs.fs_block_size))
+ fs.fs_name
+ )
+ ) else ( (* Inodes display. *)
+ printf "%10Ld %10Ld %10Ld %s\n"
+ fs.fs_inodes_total fs.fs_inodes_used fs.fs_inodes_avail
+ fs.fs_name
+ )
+ )
+ in
+ iter_over_filesystems doms print_stats
+
+(*
+(* Probe a single partition, which we assume contains either a
+ * filesystem or is a PV.
+ * - target will be something like "hda" or "hda1"
+ * - part_type will be the partition type if known, or None
+ * - fd is a file descriptor opened on the device
+ * - start & size are where we think the start and size of the
+ * partition is within the file descriptor (in SECTORS)
+ *)
+and probe_partition target part_type fd start size =
+ match part_type with
+ | None ->
+ ProbeFailed (s_ "detection of unpartitioned devices not yet supported")
+ | Some 0x05 ->
+ ProbeIgnore (* Extended partition - ignore it. *)
+ | Some part_type ->
+ try
+ let probe_fn = Hashtbl.find filesystems part_type in
+ probe_fn target part_type fd start size
+ with
+ Not_found ->
+ ProbeFailed
+ (sprintf (f_ "unsupported partition type %02x") part_type)
+*)
git.annexia.org / virt-top.git / blobdiff