diff options
| author | Phil Sutter <phil@nwl.cc> | 2021-11-01 12:35:41 +0100 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2021-11-01 15:16:20 +0100 |
| commit | 2504a9b1f6f9ce2d02e61919dcd0bb6e6af2f0e2 (patch) | |
| tree | d140640e1d6bc74361b2d3fd759074fddf677f8e /target/linux | |
| parent | 4c09facb6394177240f8a1d6ea57fac5905812ac (diff) | |
target: config: Support DM_RAID
This is an alternative to using MD_RAID, basically RAID managed via
lvm2 instead of mdadm.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/config/Config.in.block | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/target/linux/config/Config.in.block b/target/linux/config/Config.in.block index f6c265266..eb804fb42 100644 --- a/target/linux/config/Config.in.block +++ b/target/linux/config/Config.in.block @@ -645,6 +645,33 @@ config ADK_LINUX_KERNEL_DM_MIRROR Allow volume managers to mirror logical volumes, also needed for live data migration tools such as 'pvmove'. +config ADK_LINUX_KERNEL_DM_RAID + tristate "RAID 1/4/5/6/10 target" + depends on ADK_LINUX_KERNEL_BLK_DEV_DM + select ADK_LINUX_KERNEL_MD_RAID0 + select ADK_LINUX_KERNEL_MD_RAID1 + select ADK_LINUX_KERNEL_MD_RAID10 + select ADK_LINUX_KERNEL_MD_RAID456 + select ADK_LINUX_KERNEL_BLK_DEV_MD + ---help--- + A dm target that supports RAID1, RAID10, RAID4, RAID5 and RAID6 mappings + + A RAID-5 set of N drives with a capacity of C MB per drive provides + the capacity of C * (N - 1) MB, and protects against a failure + of a single drive. For a given sector (row) number, (N - 1) drives + contain data sectors, and one drive contains the parity protection. + For a RAID-4 set, the parity blocks are present on a single drive, + while a RAID-5 set distributes the parity across the drives in one + of the available parity distribution methods. + + A RAID-6 set of N drives with a capacity of C MB per drive + provides the capacity of C * (N - 2) MB, and protects + against a failure of any two drives. For a given sector + (row) number, (N - 2) drives contain data sectors, and two + drives contains two independent redundancy syndromes. Like + RAID-5, RAID-6 distributes the syndromes across the drives + in one of the available parity distribution methods. + config ADK_LINUX_KERNEL_BLK_DEV_DRBD tristate "DRBD support (Network RAID 1)" select ADK_LINUX_KERNEL_BLOCK |