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| author | Zdenek Kabelac <zkabelac@redhat.com> | 2017-02-23 23:38:06 +0100 |
|---|---|---|
| committer | Zdenek Kabelac <zkabelac@redhat.com> | 2017-03-10 19:33:01 +0100 |
| commit | ddd5a7680153486c4edebb8a7946827e7abe93a0 (patch) | |
| tree | 78cd501cac13f106992916441871aeb9ca54d6aa /libdm/libdm-targets.c | |
| parent | bf79fb1a337b707ae6d44e42c7b43c62cfac2bdd (diff) | |
| download | lvm2-ddd5a7680153486c4edebb8a7946827e7abe93a0.tar.gz | |
libdm: support cache metadata2 feature flag
Dm cache target version 1.10 introduces new cache metadata format
(upstream kernel >=4.11).
New format is enable by passing new target feature flag metadata2.
Interace side on libdm uses DM_CACHE_FEATURE_METADATA2.
This feature bit is now also recognized on status
and set in 'feature_flags' field of dm_status_cache structure.
Code also adds check for 'highest' supported feature flag bit.
So it rejects properly any 'unknown' feature bit set by application.
Diffstat (limited to 'libdm/libdm-targets.c')
| -rw-r--r-- | libdm/libdm-targets.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libdm/libdm-targets.c b/libdm/libdm-targets.c index 8c987908e..f44abfd53 100644 --- a/libdm/libdm-targets.c +++ b/libdm/libdm-targets.c @@ -276,6 +276,8 @@ int dm_get_status_cache(struct dm_pool *mem, const char *params, s->feature_flags |= DM_CACHE_FEATURE_WRITEBACK; else if (!strncmp(p, "passthrough ", 12)) s->feature_flags |= DM_CACHE_FEATURE_PASSTHROUGH; + else if (!strncmp(p, "metadata2 ", 10)) + s->feature_flags |= DM_CACHE_FEATURE_METADATA2; else log_error("Unknown feature in status: %s", params); |