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thin: add comment with future extension

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It could be actually better to use even cache origin in
read-only mode so there could no be some 'acidental'
change being done on this volume.

This however need further tools enhancment - where we would need
to handle whole subtree on 'lvchange -pr/-prw'.
This commit is contained in:
Zdenek Kabelac 2016-12-18 15:06:12 +01:00
parent 75f2388093
commit 79121416df
1 changed files with 4 additions and 0 deletions
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4
lib/metadata/thin_manip.c
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@ -99,6 +99,10 @@ int attach_thin_external_origin(struct lv_segment *seg,
external_lv->name); external_lv->name);
external_lv->status &= ~LVM_WRITE; external_lv->status &= ~LVM_WRITE;
} }
// TODO: should we mark even origin read-only ?
//if (lv_is_cache(external_lv)) /* read-only corigin of cache LV */
// seg_lv(first_seg(external_lv), 0)->status &= ~LVM_WRITE;
} }
return 1; return 1;