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libceph: add function that reset client's entity addr

Browse source 
This function also re-open connections to OSD/MON, and re-send in-flight
OSD requests after re-opening connections to OSD.

Signed-off-by: "Yan, Zheng" <[email protected]>
Reviewed-by: Jeff Layton <[email protected]>
Signed-off-by: Ilya Dryomov <[email protected]>
This commit is contained in:
Yan, Zheng 2019-07-25 20:16:39 +08:00 • committed by Ilya Dryomov
commit 120a75ea9f
8 changed files with 43 additions and 0 deletions
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8
net/ceph/ceph_common.c
View file

@ -694,6 +694,14 @@ void ceph_destroy_client(struct ceph_client *client)
}
EXPORT_SYMBOL(ceph_destroy_client);
void ceph_reset_client_addr(struct ceph_client *client)
{
ceph_messenger_reset_nonce(&client->msgr);
ceph_monc_reopen_session(&client->monc);
ceph_osdc_reopen_osds(&client->osdc);
}
EXPORT_SYMBOL(ceph_reset_client_addr);
/*
* true if we have the mon map (and have thus joined the cluster)
*/

6
net/ceph/messenger.c
View file

@ -3031,6 +3031,12 @@ static void con_fault(struct ceph_connection *con)
}
void ceph_messenger_reset_nonce(struct ceph_messenger *msgr)
{
u32 nonce = le32_to_cpu(msgr->inst.addr.nonce) + 1000000;
msgr->inst.addr.nonce = cpu_to_le32(nonce);
encode_my_addr(msgr);
}
/*
* initialize a new messenger instance

7
net/ceph/mon_client.c
View file

@ -213,6 +213,13 @@ static void reopen_session(struct ceph_mon_client *monc)
__open_session(monc);
}
void ceph_monc_reopen_session(struct ceph_mon_client *monc)
{
mutex_lock(&monc->mutex);
reopen_session(monc);
mutex_unlock(&monc->mutex);
}
static void un_backoff(struct ceph_mon_client *monc)
{
monc->hunt_mult /= 2; /* reduce by 50% */

18
net/ceph/osd_client.c
View file

@ -5086,6 +5086,24 @@ out_put_req:
}
EXPORT_SYMBOL(ceph_osdc_call);
/*
* reset all osd connections
*/
void ceph_osdc_reopen_osds(struct ceph_osd_client *osdc)
{
struct rb_node *n;
down_write(&osdc->lock);
for (n = rb_first(&osdc->osds); n; ) {
struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node);
n = rb_next(n);
if (!reopen_osd(osd))
kick_osd_requests(osd);
}
up_write(&osdc->lock);
}
/*
* init, shutdown
*/