diff options
Diffstat (limited to 'drivers/md/Kconfig')
| -rw-r--r-- | drivers/md/Kconfig | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig index 1e9db8e4acdf..104aa5355090 100644 --- a/drivers/md/Kconfig +++ b/drivers/md/Kconfig @@ -37,6 +37,32 @@ config BLK_DEV_MD If unsure, say N. +config MD_BITMAP + bool "MD RAID bitmap support" + default y + depends on BLK_DEV_MD + help + If you say Y here, support for the write intent bitmap will be + enabled. The bitmap can be used to optimize resync speed after power + failure or readding a disk, limiting it to recorded dirty sectors in + bitmap. + + This feature can be added to existing MD array or MD array can be + created with bitmap via mdadm(8). + + If unsure, say Y. + +config MD_LLBITMAP + bool "MD RAID lockless bitmap support" + depends on BLK_DEV_MD + help + If you say Y here, support for the lockless write intent bitmap will + be enabled. + + Note, this is an experimental feature. + + If unsure, say N. + config MD_AUTODETECT bool "Autodetect RAID arrays during kernel boot" depends on BLK_DEV_MD=y @@ -54,6 +80,7 @@ config MD_AUTODETECT config MD_BITMAP_FILE bool "MD bitmap file support (deprecated)" default y + depends on MD_BITMAP help If you say Y here, support for write intent bitmaps in files on an external file system is enabled. This is an alternative to the internal @@ -61,6 +88,19 @@ config MD_BITMAP_FILE various kernel APIs and can only work with files on a file system not actually sitting on the MD device. +config MD_LINEAR + tristate "Linear (append) mode" + depends on BLK_DEV_MD + help + If you say Y here, then your multiple devices driver will be able to + use the so-called linear mode, i.e. it will combine the hard disk + partitions by simply appending one to the other. + + To compile this as a module, choose M here: the module + will be called linear. + + If unsure, say Y. + config MD_RAID0 tristate "RAID-0 (striping) mode" depends on BLK_DEV_MD @@ -126,7 +166,7 @@ config MD_RAID456 tristate "RAID-4/RAID-5/RAID-6 mode" depends on BLK_DEV_MD select RAID6_PQ - select LIBCRC32C + select CRC32 select ASYNC_MEMCPY select ASYNC_XOR select ASYNC_PQ @@ -161,6 +201,7 @@ config MD_RAID456 config MD_CLUSTER tristate "Cluster Support for MD" + select MD_BITMAP depends on BLK_DEV_MD depends on DLM default n @@ -254,6 +295,7 @@ config DM_CRYPT depends on BLK_DEV_DM depends on (ENCRYPTED_KEYS || ENCRYPTED_KEYS=n) depends on (TRUSTED_KEYS || TRUSTED_KEYS=n) + select CRC32 select CRYPTO select CRYPTO_CBC select CRYPTO_ESSIV @@ -379,6 +421,7 @@ config DM_RAID select MD_RAID1 select MD_RAID10 select MD_RAID456 + select MD_BITMAP select BLK_DEV_MD help A dm target that supports RAID1, RAID10, RAID4, RAID5 and RAID6 mappings @@ -645,4 +688,6 @@ config DM_AUDIT source "drivers/md/dm-vdo/Kconfig" +source "drivers/md/dm-pcache/Kconfig" + endif # MD |