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Diffstat (limited to 'docs/operation/raid.rst')
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1 files changed, 39 insertions, 106 deletions
diff --git a/docs/operation/raid.rst b/docs/operation/raid.rst index 90483e74..49463a72 100644 --- a/docs/operation/raid.rst +++ b/docs/operation/raid.rst @@ -26,7 +26,7 @@ The VyOS implementation of RAID 1 allows the following: .. _raid_instalation: -Installation Implications +Installation Implications ========================= The VyOS systems installation utility provides several options for installing @@ -42,8 +42,8 @@ to a RAID 1 set. You can: Configuration ============= -Non–RAID 1 System ------------------ +Single disk, install as normal +------------------------------ When the VyOS system is installed, it automatically detects the presence of two disks not currently part of a RAID array. In these cases, the VyOS @@ -57,13 +57,12 @@ mirroring for the drives, with the following prompt. * If you do not want to configure RAID 1 mirroring, enter “No” at the prompt and continue with installation in the normal way. -Non–RAID 1 to RAID 1 --------------------- +Empty 2+ Disk +------------- -If you reinstall a non-RAID VyOS system on a system with two identical disks -that are not currently part of a RAID 1 set, the VyOS installation utility -automatically offers you the option of configuring RAID 1 mirroring for the -drives, with the following prompt. +If VyOS system detect two identical disks that are not currently part of a +RAID-1 set, the VyOS installation utility automatically offers you the option +of configuring RAID 1 mirroring for the drives, with the following prompt. .. code-block:: none @@ -90,13 +89,20 @@ prompted to confirm that you want to continue installation is complete. Enter “No” to delete the current VyOS configuration. -5 - Continue with installation in the normal way. +.. code-block:: none + + Would you like me to save the data on it before I delete it? + +5 - Enter “Yes” at the prompt to retain the current VyOS configuration once +installation is complete. Enter “No” to delete the current VyOS configuration. + +6 - Continue with installation in the normal way. -RAID 1 to Non–RAID 1 --------------------- +Present RAID-1 +-------------- -If you reinstall VyOS software on a system with a RAID 1 set already configured, +When the VyOS software on a system with a RAID 1 set already configured, the installation utility will detect the array and will display the following prompt: @@ -135,60 +141,6 @@ installation is complete. Enter “No” to delete the current VyOS configuratio 5 - Continue with installation in the normal way. -RAID 1 to RAID 1 ----------------- - -If you reinstall the VyOS software on a system with a RAID 1 set already -configured, the installation utility will detect the array and will display -the following prompt: - -.. code-block:: none - - Would you like to use this one? - -1 - To continue to use the existing RAID 1 array, enter “Yes” at the prompt. -The system prompts you to indicate whether you want to save the old -configuration data. This represents the current VyOS configuration. - -.. code-block:: none - - Would you like me to save the data on it before I delete it? - -2 - Enter “Yes” at the prompt to retain the current VyOS configuration once -installation is complete. Enter “No” to delete all current VyOS configuration. - -3 - Continue with installation in the normal way. - -RAID 1 to new RAID 1 --------------------- - -You can also recreate the RAID 1 array on disk drives already configured for -RAID-1.The installation utility will detect the array and will display the -following prompt: - -.. code-block:: none - - Would you like to use this one? - -1 - To stop using the existing RAID 1 array, enter “No” at the prompt. -The system detects the two disks and prompts you to indicate whether you -want to configure RAID 1 mirroring in them. - -.. code-block:: none - - Would you like to configure RAID 1 mirroring on them? - -2 - To create a new RAID 1 array, enter “Yes” at the prompt. If the system -detects a file system on the partitions being used for RAID 1 it will prompt -you to indicate whether you want to continue creating the RAID 1 array. - -.. code-block:: none - - Continue creating array? - -3 - To overwrite the old filesystem, enter “Yes”. - -4 - Continue with installation in the normal way. Detecting and Replacing a Failed RAID 1 Disk -------------------------------------------- @@ -202,12 +154,10 @@ To replace a bad disk within a RAID 1 set, perform the following steps: 1 - Remove the failed disk from the RAID 1 set by issuing the following command: -.. code-block:: none - - vyos@vyos:~$ remove raid RAID‐1‐device member disk‐partition +.. opcmd:: delete raid RAID‐1‐device member disk‐partition -where RAID-1-device is the name of the RAID 1 device (for example, md0) and -disk-partition is the name of the failed disk partition (for example, sdb2). + where RAID-1-device is the name of the RAID 1 device (for example, md0) and + disk-partition is the name of the failed disk partition (for example, sdb2). 2- Physically remove the failed disk from the system. If the drives are not hot-swappable, then you must shut down the system before removing the disk. @@ -216,51 +166,35 @@ hot-swappable, then you must shut down the system before removing the disk. 4 - Format the new disk for RAID 1 by issuing the following command: -.. code-block:: none - - vyos@vyos:~$ format <disk‐device1> like <disk‐device2> +.. opcmd:: format <disk‐device1> like <disk‐device2> -where disk-device1 is the replacement disk (for example, sdb) and disk-device2 -is the existing healthy disk (for example, sda). + where disk-device1 is the replacement disk (for example, sdb) and + disk-device2 is the existing healthy disk (for example, sda). 5-Add the replacement disk to the RAID 1 set by issuing the following command: -.. code-block:: none - - vyos@vyos:~$ add raid <RAID‐1‐device> member <disk‐partition> +.. opcmd:: add raid <RAID‐1‐device> member <disk‐partition> -where RAID-1-device is the name of the RAID 1 device (for example, md0) and -disk-partition is the name of the replacement disk partition -(for example, sdb2). + where RAID-1-device is the name of the RAID 1 device (for example, md0) and + disk-partition is the name of the replacement disk partition + (for example, sdb2). Operation ========= -Use this command to add a member disk partition to the RAID 1 set. Adding a -disk partition to a RAID 1 set initiates mirror synchronization, where all data -on the existing member partition is copied to the new partition. -Before adding a brand new drive to a RAID 1 set, the drive must be formatted -using - -.. code-block:: none - - vyos@vyos:~$ add raid <RAID‐1‐device> member <disk‐partition> - -Use this command to format a disk to be partitioned exactly like a second disk. -The disk to be formatted must be inactive; that is, it must not have any -partitions mounted and it must not already be part of an active RAID 1 set. -In formatting, no data is copied to the formatted device, but any existing data -on the formatted device is lost. -This command is typically used to prepare a disk to be added to a preexisting -RAID 1 set (of which disk-device2 is already a member). - -.. code-block:: none +This part introduces how to add a disk partition to a RAID-1 set initiates +mirror synchronization, check and display information. - vyos@vyos:~$ format <disk‐device1> like <disk‐device2> +.. opcmd:: add raid <RAID‐1‐device> member <disk‐partition> + + Use this command to add a member disk partition to the RAID 1 set. Adding a + disk partition to a RAID 1 set initiates mirror synchronization, where all + data on the existing member partition is copied to the new partition. +.. opcmd:: format <disk‐device1> like <disk‐device2> -Displaying information about a RAID 1 set with two members ‐ one being -resynchronized. + This command is typically used to prepare a disk to be added to a preexisting + RAID 1 set (of which disk-device2 is already a member). .. opcmd:: show raid <RAID‐1‐device> @@ -309,4 +243,3 @@ resynchronized. -
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