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ceph: add more debug info when decoding mdsmap 

Show the laggy state.

Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Xiubo Li 2019-11-26 07:24:20 -05:00 committed by Ilya Dryomov
parent bd84fbcb31
commit da08e1e1d7
1 changed files with 8 additions and 4 deletions
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12
fs/ceph/mdsmap.c
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@ -158,6 +158,7 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
void *pexport_targets = NULL;
struct ceph_timespec laggy_since;
struct ceph_mds_info *info;
bool laggy;
ceph_decode_need(p, end, sizeof(u64) + 1, bad);
global_id = ceph_decode_64(p);
@ -190,6 +191,7 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
if (err)
goto corrupt;
ceph_decode_copy(p, &laggy_since, sizeof(laggy_since));
laggy = laggy_since.tv_sec != 0 || laggy_since.tv_nsec != 0;
*p += sizeof(u32);
ceph_decode_32_safe(p, end, namelen, bad);
*p += namelen;
@ -207,10 +209,11 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
*p = info_end;
}
dout("mdsmap_decode %d/%d %lld mds%d.%d %s %s\n",
dout("mdsmap_decode %d/%d %lld mds%d.%d %s %s%s\n",
i+1, n, global_id, mds, inc,
ceph_pr_addr(&addr),
ceph_mds_state_name(state));
ceph_mds_state_name(state),
laggy ? "(laggy)" : "");
if (mds < 0 || state <= 0)
continue;
@ -230,8 +233,7 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
info->global_id = global_id;
info->state = state;
info->addr = addr;
info->laggy = (laggy_since.tv_sec != 0 ||
laggy_since.tv_nsec != 0);
info->laggy = laggy;
info->num_export_targets = num_export_targets;
if (num_export_targets) {
info->export_targets = kcalloc(num_export_targets,
@ -355,6 +357,8 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
m->m_damaged = false;
}
bad_ext:
dout("mdsmap_decode m_enabled: %d, m_damaged: %d, m_num_laggy: %d\n",
!!m->m_enabled, !!m->m_damaged, m->m_num_laggy);
*p = end;
dout("mdsmap_decode success epoch %u\n", m->m_epoch);
return m;