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| author | Zdenek Kabelac <zkabelac@redhat.com> | 2019-06-05 14:31:34 +0200 |
|---|---|---|
| committer | Zdenek Kabelac <zkabelac@redhat.com> | 2019-06-05 15:48:41 +0200 |
| commit | e3c4ab0cc788b0190ab58446189c2d6b07a27b98 (patch) | |
| tree | cf22baba14683aaa770557eccd8842564ca9e286 /device_mapper/libdm-targets.c | |
| parent | d18e491f6890e15a677e8189de0699ccc7412f16 (diff) | |
| download | lvm2-e3c4ab0cc788b0190ab58446189c2d6b07a27b98.tar.gz | |
cache: support no_discard_passdown
Recent kernel version from kernel commit:
de7180ff908b2bc0342e832dbdaa9a5f1ecaa33a
started to report in cache status line new flag:
no_discard_passdown
Whenever lvm spots unknown status it reports:
Unknown feature in status:
So add reconginzing this feature flag and also report this with
'lvs -o+kernel_discards'
When no_discard_passdown is found in status 'nopassdown' gets reported
for this field (roughly matching what we report for thin-pools).
Diffstat (limited to 'device_mapper/libdm-targets.c')
| -rw-r--r-- | device_mapper/libdm-targets.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/device_mapper/libdm-targets.c b/device_mapper/libdm-targets.c index 607f429e9..d82e28b13 100644 --- a/device_mapper/libdm-targets.c +++ b/device_mapper/libdm-targets.c @@ -296,6 +296,8 @@ int dm_get_status_cache(struct dm_pool *mem, const char *params, s->feature_flags |= DM_CACHE_FEATURE_PASSTHROUGH; else if (!strncmp(p, "metadata2 ", 10)) s->feature_flags |= DM_CACHE_FEATURE_METADATA2; + else if (!strncmp(p, "no_discard_passdown ", 20)) + s->feature_flags |= DM_CACHE_FEATURE_NO_DISCARD_PASSDOWN; else log_error("Unknown feature in status: %s", params); |