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Description stolen from linux d/b/rbd.c L3:
rbd.c -- Export ceph rados objects as a Linux block device
16 partitions seem to make sense according to L90:
#define RBD_SINGLE_MAJOR_PART_SHIFT 4
Running *scan -vvvvvvdddddd yields
#filters/filter-type.c:28 /dev/rbd1p5: Skipping: Unrecognised LVM device type 252
#filters/filter-persistent.c:131 filter caching bad /dev/rbd1p5
right now, and adding
types = ["rbd", 252]
to /e/l/lvm.conf (with the matching "252 rbd" in /p/devices) works as a
per-machine fix:
rbd1 252:16 0 1T 1 disk
|-rbd1p1 252:17 0 243M 1 part
|-rbd1p2 252:18 0 1K 1 part
`-rbd1p5 252:21 0 1023.8G 1 part
`-dev01--vg-root 253:0 0 1023.8G 0 lvm
but rbd is supported by upstream so it'd be nice to have it work OOB
Changes:
- move device type registration out of "type filter" (filter.c)
to a separate and new dev-type.[ch] for common use throughout the code
- the structure for keeping the major numbers detected for available
device types and available partitioning available is stored in
"dev_types" structure now
- move common partitioning detection code to dev-type.[ch] as well
together with other device-related functions bound to dev_types
(see dev-type.h for the interface)
The dev-type interface contains all common functions used to detect
subsystems/device types, signature/superblock recognition code,
type-specific device properties and other common device properties
(bound to dev_types), including partitioning support.
- add dev_types instance to cmd context as cmd->dev_types for common use
- use cmd->dev_types throughout as a central point for providing
information about device types
