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libceph: respect RADOS_BACKOFF backoffs

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Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Ilya Dryomov
2017-06-19 12:18:05 +02:00
parent 76f827a7b1
commit a02a946dfe
8 changed files with 737 additions and 0 deletions
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74
net/ceph/debugfs.c
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@@ -243,6 +243,73 @@ static void dump_linger_requests(struct seq_file *s, struct ceph_osd *osd)
mutex_unlock(&osd->lock);
}
static void dump_snapid(struct seq_file *s, u64 snapid)
{
if (snapid == CEPH_NOSNAP)
seq_puts(s, "head");
else if (snapid == CEPH_SNAPDIR)
seq_puts(s, "snapdir");
else
seq_printf(s, "%llx", snapid);
}
static void dump_name_escaped(struct seq_file *s, unsigned char *name,
size_t len)
{
size_t i;
for (i = 0; i < len; i++) {
if (name[i] == '%' || name[i] == ':' || name[i] == '/' ||
name[i] < 32 || name[i] >= 127) {
seq_printf(s, "%%%02x", name[i]);
} else {
seq_putc(s, name[i]);
}
}
}
static void dump_hoid(struct seq_file *s, const struct ceph_hobject_id *hoid)
{
if (hoid->snapid == 0 && hoid->hash == 0 && !hoid->is_max &&
hoid->pool == S64_MIN) {
seq_puts(s, "MIN");
return;
}
if (hoid->is_max) {
seq_puts(s, "MAX");
return;
}
seq_printf(s, "%lld:%08x:", hoid->pool, hoid->hash_reverse_bits);
dump_name_escaped(s, hoid->nspace, hoid->nspace_len);
seq_putc(s, ':');
dump_name_escaped(s, hoid->key, hoid->key_len);
seq_putc(s, ':');
dump_name_escaped(s, hoid->oid, hoid->oid_len);
seq_putc(s, ':');
dump_snapid(s, hoid->snapid);
}
static void dump_backoffs(struct seq_file *s, struct ceph_osd *osd)
{
struct rb_node *n;
mutex_lock(&osd->lock);
for (n = rb_first(&osd->o_backoffs_by_id); n; n = rb_next(n)) {
struct ceph_osd_backoff *backoff =
rb_entry(n, struct ceph_osd_backoff, id_node);
seq_printf(s, "osd%d\t", osd->o_osd);
dump_spgid(s, &backoff->spgid);
seq_printf(s, "\t%llu\t", backoff->id);
dump_hoid(s, backoff->begin);
seq_putc(s, '\t');
dump_hoid(s, backoff->end);
seq_putc(s, '\n');
}
mutex_unlock(&osd->lock);
}
static int osdc_show(struct seq_file *s, void *pp)
{
struct ceph_client *client = s->private;
@@ -268,6 +335,13 @@ static int osdc_show(struct seq_file *s, void *pp)
}
dump_linger_requests(s, &osdc->homeless_osd);
seq_puts(s, "BACKOFFS\n");
for (n = rb_first(&osdc->osds); n; n = rb_next(n)) {
struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node);
dump_backoffs(s, osd);
}
up_read(&osdc->lock);
return 0;
}