Difference between revisions of "linux kernel configuration for software raid"
From thelinuxwiki
| Line 6: | Line 6: | ||
If your system has RAID support, you should have a file called /proc/mdstat. If you do not have that file, maybe your kernel does not have RAID support. | If your system has RAID support, you should have a file called /proc/mdstat. If you do not have that file, maybe your kernel does not have RAID support. | ||
| − | Also, gentoo users can run... | + | Also, gentoo & archlinux users can run... |
# zcat /proc/config.gz |grep CONFIG_BLK_DEV_MD | # zcat /proc/config.gz |grep CONFIG_BLK_DEV_MD | ||
CONFIG_BLK_DEV_MD=y | CONFIG_BLK_DEV_MD=y | ||
| + | And | ||
| + | # zcat /proc/config.gz |grep MD_RAID | ||
| + | CONFIG_MD_RAID0=y | ||
| + | CONFIG_MD_RAID1=y | ||
| + | CONFIG_MD_RAID10=y | ||
| + | CONFIG_MD_RAID456=y | ||
| − | Symbol: BLK_DEV_MD [=y] | + | |
| + | == menuconfig / kconfig info == | ||
| + | |||
| + | We assume you know how to configure your kernel. This section details the menuconfig options. For more info on configuring linux kernels, go here... | ||
| + | [https://wiki.archlinux.org/index.php/Kernels/Compilation/Traditional Kernels/Compilation/Traditional] | ||
| + | |||
| + | '''Multiple devices driver support (required)''' | ||
| + | |||
| + | Symbol: BLK_DEV_MD [=y] | ||
Type : tristate | Type : tristate | ||
Prompt: RAID support | Prompt: RAID support | ||
| Line 20: | Line 34: | ||
Depends on: MD [=y] | Depends on: MD [=y] | ||
Selected by: DM_RAID [=m] && MD [=y] && BLK_DEV_DM [=m] | Selected by: DM_RAID [=m] && MD [=y] && BLK_DEV_DM [=m] | ||
| + | |||
| + | Help text: | ||
| + | |||
| + | Support multiple physical spindles through a single logical device. Required for RAID and logical volume management. | ||
| + | |||
| + | |||
Symbol: MD_RAID1 [=y] | Symbol: MD_RAID1 [=y] | ||
Revision as of 17:14, 30 March 2014
Check for support
If your system has RAID support, you should have a file called /proc/mdstat. If you do not have that file, maybe your kernel does not have RAID support.
Also, gentoo & archlinux users can run...
# zcat /proc/config.gz |grep CONFIG_BLK_DEV_MD CONFIG_BLK_DEV_MD=y
And
# zcat /proc/config.gz |grep MD_RAID CONFIG_MD_RAID0=y CONFIG_MD_RAID1=y CONFIG_MD_RAID10=y CONFIG_MD_RAID456=y
We assume you know how to configure your kernel. This section details the menuconfig options. For more info on configuring linux kernels, go here... Kernels/Compilation/Traditional
Multiple devices driver support (required)
Symbol: BLK_DEV_MD [=y]
Type : tristate
Prompt: RAID support
Location:
-> Device Drivers
(1) -> Multiple devices driver support (RAID and LVM) (MD [=y])
Defined at drivers/md/Kconfig:14
Depends on: MD [=y]
Selected by: DM_RAID [=m] && MD [=y] && BLK_DEV_DM [=m]
Help text:
Support multiple physical spindles through a single logical device. Required for RAID and logical volume management.
Symbol: MD_RAID1 [=y]
Type : tristate
Prompt: RAID-1 (mirroring) mode
Location:
-> Device Drivers
-> Multiple devices driver support (RAID and LVM) (MD [=y])
(2) -> RAID support (BLK_DEV_MD [=y])
Defined at drivers/md/Kconfig:80
Depends on: MD [=y] && BLK_DEV_MD [=y]
Selected by: DM_RAID [=m] && MD [=y] && BLK_DEV_DM [=m]
Symbol: MD_RAID0 [=y]
Type : tristate
Prompt: RAID-0 (striping) mode
Location:
-> Device Drivers
-> Multiple devices driver support (RAID and LVM) (MD [=y])
(3) -> RAID support (BLK_DEV_MD [=y])
Defined at drivers/md/Kconfig:60
Depends on: MD [=y] && BLK_DEV_MD [=y]
Symbol: MD_RAID456 [=y]
Type : tristate
Prompt: RAID-4/RAID-5/RAID-6 mode
Location:
-> Device Drivers
-> Multiple devices driver support (RAID and LVM) (MD [=y])
-> RAID support (BLK_DEV_MD [=y])
Defined at drivers/md/Kconfig:121
Depends on: MD [=y] && BLK_DEV_MD [=y]
Selects: RAID6_PQ [=y] && ASYNC_MEMCPY [=y] && ASYNC_XOR [=y] && ASYNC_PQ [=y] && ASYNC_RAID6_RECOV [=y]
Selected by: DM_RAID [=m] && MD [=y] && BLK_DEV_DM [=m]
Symbol: MD_RAID10 [=y]
Type : tristate
Prompt: RAID-10 (mirrored striping) mode
Location:
-> Device Drivers
-> Multiple devices driver support (RAID and LVM) (MD [=y])
(4) -> RAID support (BLK_DEV_MD [=y])
Defined at drivers/md/Kconfig:102
Depends on: MD [=y] && BLK_DEV_MD [=y]
Selected by: DM_RAID [=m] && MD [=y] && BLK_DEV_DM [=m]
Links
this guide is recommended by the linux kernel help... [Software RAID HOWTO]
