CONFIG_BLK_DEV_MD: RAID support

General informations

The Linux kernel configuration item CONFIG_BLK_DEV_MD:

• prompt: RAID support
• type: tristate
• depends on: (none)
• 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
• modules built: do_mounts_md, md-mod, md

Help text

This driver lets you combine several hard disk partitions into one logical block device. This can be used to simply append one partition to another one or to combine several redundant hard disks into a RAID1/4/5 device so as to provide protection against hard disk failures. This is called "Software RAID" since the combining of the partitions is done by the kernel. "Hardware RAID" means that the combining is done by a dedicated controller; if you have such a controller, you do not need to say Y here.

More 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 unsure, say N.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb module do_mounts_md CONFIG_BLK_DEV_MD : drivers/md/Kconfig : "RAID support" # in 2.5.64–2.5.75, 2.6.0–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.8
• lkddb module md CONFIG_BLK_DEV_MD : drivers/md/Kconfig : "RAID support" # in 2.5.45–2.5.63
• lkddb module md-mod CONFIG_BLK_DEV_MD : drivers/md/Kconfig : "RAID support" # in 5.9–5.19, 6.0–6.12

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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