MDAdm parsers

Classes to parse mdadm commands information.

Parsers provided by this module include:

MDAdm - command /usr/sbin/mdadm -E {device}

MDAdmDetail - command /usr/sbin/mdadm -D /dev/md*

class insights.parsers.mdadm.MDAdmDetail(context, extra_bad_lines=None)[source]

Bases: insights.core.CommandParser, list

Parser for output of command mdadm -D /dev/md*.

Each MD arrry device will be wrapped in :class:MDAdmDetailDevice.

The md device’s properties in <property name> : <property value> format will be stored seprately, and are accessable via <property name>.

unparsable_device_list

the name of unparsable devices

Type:list

Sample output:

/dev/md2:
           Version : 1.2
     Creation Time : Sun Sep  5 23:19:18 2021
        Raid Level : raid1
        Array Size : 7501333824 (7153.83 GiB 7681.37 GB)
     Used Dev Size : 7501333824 (7153.83 GiB 7681.37 GB)
      Raid Devices : 2
     Total Devices : 2
       Persistence : Superblock is persistent

     Intent Bitmap : Internal

       Update Time : Sun Sep 26 22:18:13 2021
             State : clean
    Active Devices : 2
   Working Devices : 2
    Failed Devices : 0
     Spare Devices : 0

Consistency Policy : bitmap

              Name : hostname:2  (local to host hostname)
              UUID : 245e1231:245e1231:245e1231:245e1231
            Events : 1821

    Number   Major   Minor   RaidDevice State
       0     259        1        0      active sync   /dev/nvme2n1
       1     259        0        1      active sync   /dev/nvme3n1
/dev/md3:
           Version : 1.2
     Creation Time : Sun Sep  5 23:19:18 2021
            ...

Examples

>>> len(mdadm_d)
2
>>> mdadm_d[0].device_name
'/dev/md2'
>>> mdadm_d[0]["UUID"]
'245e1231:245e1231:245e1231:245e1231'
>>> mdadm_d[0].is_internal_bitmap
True
>>> len(mdadm_d[0].device_table)
2
>>> mdadm_d[1].get("Version")
'1.2'
parse_content(content)[source]

This method must be implemented by classes based on this class.

class insights.parsers.mdadm.MDAdmDetailDevice[source]

Bases: dict

Parser for single MD device data from mdadm -D /dev/md* output.

MD arrry device’s full path name will be reside in /dev/ and start with “md”, or reside in /dev/md/. For examples: /dev/md0, /dev/md/home .

The md device’s properties in <property name> : <property value> format will be stored seprately, and are accessable via <property name>.

device_name

the name of the device, e.g. /dev/md0

Type:str
device_table

the devices info table

Type:list
is_internal_bitmap

True if using “Internal” for Intent Bitmap

Type:bool
class insights.parsers.mdadm.MDAdmMetadata(context, extra_bad_lines=None)[source]

Bases: insights.core.CommandParser, dict

Parser for output of mdadm -E for each MD device in system.

This stores the information from the output in the following properties: * device - the name of the device after /dev/ - e.g. loop0

Sample output:

/dev/loop0:
Magic : a92b4efc
Version : 1.0
Feature Map : 0x0
Array UUID : 98e098ef:c8662ce2:2ed2aa5f:7f0416a9
Name : 0
Creation Time : Mon Jun 29 02:16:52 2020
Raid Level : raid1
Raid Devices : 2

Avail Dev Size : 16383968 sectors (7.81 GiB 8.39 GB)
Array Size : 1048576 KiB (1024.00 MiB 1073.74 MB)
Used Dev Size : 2097152 sectors (1024.00 MiB 1073.74 MB)
Super Offset : 16383984 sectors
Unused Space : before=0 sectors, after=14286824 sectors
State : clean
Device UUID : 5e249ed9:a9ee800a:c09c963f:363a18d2

Update Time : Mon Jun 29 02:19:56 2020
Bad Block Log : 512 entries available at offset -8 sectors
Checksum : 395066e8 - correct
Events : 60

Device Role : Active device 0
Array State : AA ('A' == active, '.' == missing, 'R' == replacing)

Examples

>>> mdadm.device
'/dev/loop0'
>>> mdadm["Device UUID"]
'5e249ed9:a9ee800a:c09c963f:363a18d2'
>>> mdadm["Events"]
60
parse_content(content)[source]

This method must be implemented by classes based on this class.