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libceph: dump pg_temp mappings to debugfs

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Dump pg_temp mappings to /sys/kernel/debug/ceph/<client>/osdmap,
one 'pg_temp <pgid> [<osd>, ..., <osd>]' per line, e.g:

    pg_temp 2.6 [2,3,4]

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
This commit is contained in:
Ilya Dryomov 2014-03-13 16:36:13 +02:00 committed by Sage Weil
parent 0a2800d728
commit 1c00240e00
1 changed files with 11 additions and 0 deletions
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11
net/ceph/debugfs.c
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@ -82,6 +82,17 @@ static int osdmap_show(struct seq_file *s, void *p)
((map->osd_weight[i]*100) >> 16),
ceph_osdmap_state_str(sb, sizeof(sb), state));
}
for (n = rb_first(&map->pg_temp); n; n = rb_next(n)) {
struct ceph_pg_mapping *pg =
rb_entry(n, struct ceph_pg_mapping, node);
seq_printf(s, "pg_temp %llu.%x [", pg->pgid.pool,
pg->pgid.seed);
for (i = 0; i < pg->len; i++)
seq_printf(s, "%s%d", (i == 0 ? "" : ","),
pg->osds[i]);
seq_printf(s, "]\n");
}
return 0;
}