CONFIG_MD_RAID1: RAID-1 (mirroring) mode

General informations

The Linux kernel configuration item CONFIG_MD_RAID1:

• prompt: RAID-1 (mirroring) mode
• type: tristate
• depends on: CONFIG_BLK_DEV_MD
• defined in drivers/md/Kconfig
• found in Linux kernels: 2.5.45–2.5.75, 2.6.0–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12, 6.13-rc+HEAD
• modules built: raid1

Help text

A RAID-1 set consists of several disk drives which are exact copies of each other. In the event of a mirror failure, the RAID driver will continue to use the operational mirrors in the set, providing an error free MD (multiple device) to the higher levels of the kernel. In a set with N drives, the available space is the capacity of a single drive, and the set protects against a failure of (N - 1) drives.

Information about Software RAID on Linux is contained in the Software-RAID mini-HOWTO, available from https://www.tldp.org/docs.html#howto. There you will also learn where to get the supporting user space utilities raidtools.

If you want to use such a RAID-1 set, say Y. To compile this code as a module, choose M here: the module will be called raid1.

If unsure, say Y.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb module raid1 CONFIG_MD_RAID1 : drivers/md/Kconfig : "RAID-1 (mirroring) mode" # in 2.5.45–2.5.75, 2.6.0–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12, 6.13-rc+HEAD

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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