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e2c7bddf10
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80 lines
2.4 KiB
OCaml
80 lines
2.4 KiB
OCaml
(* guestfs-inspection
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* Copyright (C) 2009-2023 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*)
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open Printf
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open Std_utils
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open Utils
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external is_raid_device : string -> bool =
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"guestfs_int_daemon_is_raid_device" [@@noalloc]
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let re_md = PCRE.compile "^md[0-9]+$"
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let list_md_devices () =
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(* Look for directories under /sys/block matching md[0-9]+
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* As an additional check, we also make sure they have a md subdirectory.
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*)
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let devs = Sys.readdir "/sys/block" in
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let devs = Array.to_list devs in
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let devs = List.filter (fun d -> PCRE.matches re_md d) devs in
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let devs = List.filter (
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fun d -> is_directory (sprintf "/sys/block/%s/md" d)
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) devs in
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(* Construct the equivalent /dev/md[0-9]+ device names. *)
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let devs = List.map ((^) "/dev/") devs in
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(* Check they are really RAID devices. *)
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let devs = List.filter is_raid_device devs in
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(* Return the list sorted. *)
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sort_device_names devs
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let md_detail md =
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let out = command "mdadm" ["-D"; "--export"; md] in
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(* Split the command output into lines. *)
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let out = String.trim out in
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let lines = String.nsplit "\n" out in
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(* Parse the output of mdadm -D --export:
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* MD_LEVEL=raid1
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* MD_DEVICES=2
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* MD_METADATA=1.0
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* MD_UUID=cfa81b59:b6cfbd53:3f02085b:58f4a2e1
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* MD_NAME=localhost.localdomain:0
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*)
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let values = parse_key_value_strings lines in
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List.map (
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fun (key, value) ->
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(* Remove the MD_ prefix from the key and translate the
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* remainder to lower case.
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*)
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let key =
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if String.is_prefix key "MD_" then
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String.sub key 3 (String.length key - 3)
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else
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key in
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let key = String.lowercase_ascii key in
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(* Add the key/value pair to the output. *)
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(key, value)
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) values
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