diff options
| author | Matthew Sakai <msakai@redhat.com> | 2023-11-17 03:28:35 +0100 |
|---|---|---|
| committer | Mike Snitzer <snitzer@kernel.org> | 2024-02-20 19:43:16 +0100 |
| commit | f11aca85b0346fe7d04eca6eb8db2011398782e7 (patch) | |
| tree | 44bbedf2224c1f695e85cd77e9772decf1c9b165 /drivers/md/Kconfig | |
| parent | dm vdo: add the top-level DM target (diff) | |
| download | linux-f11aca85b0346fe7d04eca6eb8db2011398782e7.tar.xz linux-f11aca85b0346fe7d04eca6eb8db2011398782e7.zip | |
dm vdo: enable configuration and building of dm-vdo
dm-vdo targets are not supported for 32-bit configurations. A vdo target
typically requires 1 to 1.5 GB of memory at any given time, which is likely
a large fraction of the addressable memory of a 32-bit system. At the same
time, the amount of addressable storage attached to a 32-bit system may not
be large enough for deduplication to provide much benefit. Because of these
concerns, 32-bit platforms are deemed unlikely to benefit from using a vdo
target, so dm-vdo is targeted only at 64-bit platforms.
Co-developed-by: J. corwin Coburn <corwin@hurlbutnet.net>
Signed-off-by: J. corwin Coburn <corwin@hurlbutnet.net>
Co-developed-by: John Wiele <jwiele@redhat.com>
Signed-off-by: John Wiele <jwiele@redhat.com>
Signed-off-by: Matthew Sakai <msakai@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Diffstat (limited to 'drivers/md/Kconfig')
| -rw-r--r-- | drivers/md/Kconfig | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig index a743e2c572fc..cef25cf4800c 100644 --- a/drivers/md/Kconfig +++ b/drivers/md/Kconfig @@ -498,6 +498,22 @@ config DM_FLAKEY help A target that intermittently fails I/O for debugging purposes. +config DM_VDO + tristate "VDO: deduplication and compression target" + depends on 64BIT + depends on BLK_DEV_DM + select DM_BUFIO + select LZ4_COMPRESS + select LZ4_DECOMPRESS + help + This device mapper target presents a block device with + deduplication, compression and thin-provisioning. + + To compile this code as a module, choose M here: the module will + be called dm-vdo. + + If unsure, say N. + config DM_VERITY tristate "Verity target support" depends on BLK_DEV_DM |