mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-12-26 19:19:32 +03:00
7f31908913
metaslab_should_allocate() is used in two places: [1] When trying to select a metaslab to allocate from [2] When trying to allocate from a metaslab In [2] we always expect the metaslab to be loaded, and after the refactoring of the log spacemap changes, whenever we load a metaslab we set ms_max_size to the biggest range in the ms_allocatable tree. Thus, when it is used in [2], if that field is 0, it means that the metaslab doesn't have any segments that can be used for allocations now (though it may have some free space but that space can be in the freeing, freed, or deferred trees). In [1] a metaslab can be loaded or unloaded at which point 0 can either mean the metaslab doesn't have any space or the metaslab is just not loaded thus we go ahead and try to make an estimation based on its weight. The issue here is when we call the above function for [2] and the metaslab doesn't have any allocatable space, we still go ahead and check its ms_weight which may be out of date because we haven't ran metaslab_sync_done() yet. At that point we are allowing an allocation to be attempted even though we know there is no range that is allocatable. This patch fixes this issue by explicitly checking if the metaslab is loaded and if it is, the ms_max_size is used. Reviewed-by: Matt Ahrens <mahrens@delphix.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Serapheim Dimitropoulos <serapheim@delphix.com> Closes #9045 |
||
|---|---|---|
| .. | ||
| avl | ||
| icp | ||
| lua | ||
| nvpair | ||
| spl | ||
| unicode | ||
| zcommon | ||
| zfs | ||
| .gitignore | ||
| Makefile.in | ||