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NFSv4.1/flexfile: Ensure uniqueness of mirrors across layout segments

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Keep the full list of mirrors in the struct nfs4_ff_layout_mirror so that
they can be shared among the layout segments that use them.
Also ensure that we send out only one copy of the layoutstats per mirror.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust
2015-08-24 20:03:17 -04:00
parent 0b7baf9433
commit 266d12d42e
2 changed files with 99 additions and 29 deletions
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3
fs/nfs/flexfilelayout/flexfilelayout.h
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@@ -67,6 +67,8 @@ struct nfs4_ff_layoutstat {
};
struct nfs4_ff_layout_mirror {
struct pnfs_layout_hdr *layout;
struct list_head mirrors;
u32 ds_count;
u32 efficiency;
struct nfs4_ff_layout_ds *mirror_ds;
@@ -95,6 +97,7 @@ struct nfs4_ff_layout_segment {
struct nfs4_flexfile_layout {
struct pnfs_layout_hdr generic_hdr;
struct pnfs_ds_commit_info commit_info;
struct list_head mirrors;
struct list_head error_list; /* nfs4_ff_layout_ds_err */
};