evin/ms-nfs41-client
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recovery: reclaim opens on client renewal

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after the client and session have been recovered, loop through the client's list of open state, calling nfs41_open_reclaim() and updating the stateid on success

nfs41_open_state saves the share_access and share_deny fields from the initial open, for use with nfs41_open_reclaim()

Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
This commit is contained in:
Casey Bodley 2010-11-16 11:44:34 -05:00 • committed by unknown
parent 7240c69b5d
commit d59d17c3b4
3 changed files with 38 additions and 5 deletions
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2
daemon/nfs41.h
View file

@ -94,6 +94,8 @@ typedef struct __nfs41_open_state {
struct list_entry client_entry; /* entry in nfs41_client.opens */
SRWLOCK lock;
LONG ref_count;
uint32_t share_access;
uint32_t share_deny;
} nfs41_open_state;
typedef struct __nfs41_rpc_clnt {

32
daemon/nfs41_compound.c
View file

@ -117,7 +117,7 @@ int compound_encode_send_decode(
int status, retry_count = 0, delayby = 0;
nfs41_sequence_args *args =
(nfs41_sequence_args *)compound->args.argarray[0].arg;
bool_t zero = 0;
bool_t zero = 0, client_state_lost = FALSE;
retry:
/* send compound */
@ -184,6 +184,7 @@ retry:
goto out_free_slot;
else if (status == 1)
goto do_retry;
client_state_lost = TRUE;
status = nfs41_client_renew(session->client);
if (status) {
eprintf("nfs41_exchange_id() failed with %d\n", status);
@ -202,6 +203,7 @@ retry:
}
status = nfs41_session_renew(session);
if (status == NFS4ERR_STALE_CLIENTID) {
client_state_lost = TRUE;
status = nfs41_client_renew(session->client);
if (status) {
eprintf("nfs41_exchange_id() failed with %d\n", status);
@ -219,6 +221,34 @@ retry:
eprintf("nfs41_session_renew: failed with %d\n", status);
goto out;
}
/* do client state recovery */
if (client_state_lost) {
struct client_state *state = &session->client->state;
struct list_entry *entry;
nfs41_open_state *open;
stateid4 stateid;
EnterCriticalSection(&state->lock);
list_for_each(entry, &state->opens) {
open = list_container(entry, nfs41_open_state, client_entry);
status = nfs41_open_reclaim(session, &open->parent, &open->file,
&open->owner, open->share_access, open->share_deny,
&stateid);
if (status == NFS4_OK) {
/* update the open's stateid under lock */
AcquireSRWLockExclusive(&open->lock);
memcpy(&open->stateid, &stateid, sizeof(stateid4));
ReleaseSRWLockExclusive(&open->lock);
}
}
LeaveCriticalSection(&state->lock);
/* send reclaim_complete, but don't fail on errors */
status = nfs41_reclaim_complete(session);
if (status && status == NFS4ERR_NOTSUPP)
eprintf("nfs41_reclaim_complete() failed with %s\n",
nfs_error_string(status));
}
if (nfs41_renew_in_progress(session->client, NULL))
nfs41_renew_in_progress(session->client, &zero);
goto do_retry;

9
daemon/open.c
View file

@ -395,9 +395,10 @@ static int handle_open(nfs41_upcall *upcall)
args->mode = info.mode;
args->changeattr = info.change;
} else {
uint32_t allow = 0, deny = 0, create = 0;
uint32_t create = 0;
map_access_2_allowdeny(args->access_mask, args->access_mode, &allow, &deny);
map_access_2_allowdeny(args->access_mask, args->access_mode,
&state->share_access, &state->share_deny);
status = map_disposition_2_nfsopen(args->disposition, status, &create, &upcall->last_error);
if (status)
goto out_free_state;
@ -414,8 +415,8 @@ static int handle_open(nfs41_upcall *upcall)
args->std_info.Directory = 1;
args->created = status == NFS4_OK ? TRUE : FALSE;
} else {
status = nfs41_open(state->session, allow, deny, create,
args->mode, state, &info);
status = nfs41_open(state->session, state->share_access,
state->share_deny, create, args->mode, state, &info);
if (status == NFS4_OK) {
/* add to the client's list of state for recovery */