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| author | Dan Williams <dan.j.williams@intel.com> | 2008-05-15 16:48:14 +1000 |
|---|---|---|
| committer | Neil Brown <neilb@suse.de> | 2008-05-15 16:48:14 +1000 |
| commit | a322f70c41a1c381e19b1913b8ad2a8b77078800 (patch) | |
| tree | 8bc0b5968ad74979e6248d5a8ff7a0ed0f8cefbc /TODO | |
| parent | d03373f1deea242eaacfab6b2b0c4afc6d7702d2 (diff) | |
| download | mdadm-a322f70c41a1c381e19b1913b8ad2a8b77078800.tar.gz mdadm-a322f70c41a1c381e19b1913b8ad2a8b77078800.tar.xz mdadm-a322f70c41a1c381e19b1913b8ad2a8b77078800.zip | |
Initial DDF support code.
Create a ddf array by naming the device /dev/ddf* or
specifying metadata 'ddf'.
If ddf is specified with no level, assume a container (indeed,
anything else would be wrong).
**Need to use text_Version to set external metadata...
More ddf support
Load a ddf container. Now
--examine /dev/ddf
works.
super-ddf: fix compile warning
From: Dan Williams <dan.j.williams@intel.com>
super-ddf.c:723: format %lu expects type long unsigned int, but argument 3 has type unsigned int
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'TODO')
| -rw-r--r-- | TODO | 35 |
1 files changed, 35 insertions, 0 deletions
@@ -1,3 +1,38 @@ + - add 'name' field to metadata type and use it. + - use validate_geometry more + - metadata should be able to check/reject bitmap stuff. + +DDF: + Three new metadata types: + ddf - used only to create a container. + ddf-bvd - used to create an array in a container + ddf-svd - used to create a secondary array from bvds. + + Usage: + mdadm -C /dev/ddf1 /dev/sd[abcdef] + mdadm -C /dev/md1 -e ddf /dev/sd[a-f] + mdadm -C /dev/md1 -l container /dev/sd[a-f] + + Each of these create a new ddf container using all those + devices. The name 'ddf*' signals that ddf metadata should be used. + '-e ddf' only supports one level - 'container'. 'container' is only + supported by ddf. + + mdadm -C /dev/md1 -l0 -n4 /dev/ddf1 # or maybe not ??? + mdadm -C /dev/md1 -l1 -n2 /dev/sda /dev/sdb + If exactly one device is given, and it is a container, we select + devices from that container. + If devices are given that are already in use, they must be in use by + a container, and the array is created in the container. + If devices given are bvds, we slip under the hood to make + the svd arrays. + + mdadm -A /dev/ddf ...... + base drives make a container. Anything in that container is started + auto-read-only. + if /dev/ddf is already assembled, we assemble bvds and svds inside it. + + 2005-dec-20 Want an incremental assembly mode to work nicely with udev. Core usage would be something like |