Skip to content

cloud-kernel
cloud-kernel

openanolis / cloud-kernel
1 年多 前同步成功

通知 160
Star 36
Fork 7
cloud-kernel
cloud-kernel
切换分支/标签
  1. 15 9月, 2018 2 次提交
    • T
      NFS: Don't open code clearing of delegation state · 9f0c5124
      由 Trond Myklebust 提交于 
      Add a helper for the case when the nfs4 open state has been set to use
a delegation stateid, and we want to revert to using the open stateid.
Signed-off-by: NTrond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
      9f0c5124
    • T
      NFSv4.1 fix infinite loop on I/O. · 994b15b9
      由 Trond Myklebust 提交于 
      The previous fix broke recovery of delegated stateids because it assumes
that if we did not mark the delegation as suspect, then the delegation has
effectively been revoked, and so it removes that delegation irrespectively
of whether or not it is valid and still in use. While this is "mostly
harmless" for ordinary I/O, we've seen pNFS fail with LAYOUTGET spinning
in an infinite loop while complaining that we're using an invalid stateid
(in this case the all-zero stateid).

What we rather want to do here is ensure that the delegation is always
correctly marked as needing testing when that is the case. So we want
to close the loophole offered by nfs4_schedule_stateid_recovery(),
which marks the state as needing to be reclaimed, but not the
delegation that may be backing it.

Fixes: 0e3d3e5d ("NFSv4.1 fix infinite loop on IO BAD_STATEID error")
Signed-off-by: NTrond Myklebust <trond.myklebust@hammerspace.com>
Cc: stable@vger.kernel.org # v4.11+
Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
      994b15b9
  3. 17 8月, 2018 1 次提交
  5. 14 8月, 2018 1 次提交
  7. 10 8月, 2018 3 次提交
  9. 09 8月, 2018 6 次提交
  11. 01 8月, 2018 1 次提交
    • B
      NFSv4 client live hangs after live data migration recovery · 0f90be13
      由 Bill Baker 提交于 
      After a live data migration event at the NFS server, the client may send
I/O requests to the wrong server, causing a live hang due to repeated
recovery events.  On the wire, this will appear as an I/O request failing
with NFS4ERR_BADSESSION, followed by successful CREATE_SESSION, repeatedly.
NFS4ERR_BADSSESSION is returned because the session ID being used was
issued by the other server and is not valid at the old server.

The failure is caused by async worker threads having cached the transport
(xprt) in the rpc_task structure.  After the migration recovery completes,
the task is redispatched and the task resends the request to the wrong
server based on the old value still present in tk_xprt.

The solution is to recompute the tk_xprt field of the rpc_task structure
so that the request goes to the correct server.
Signed-off-by: NBill Baker <bill.baker@oracle.com>
Reviewed-by: NChuck Lever <chuck.lever@oracle.com>
Tested-by: NHelen Chao <helen.chao@oracle.com>
Fixes: fb43d172 ("SUNRPC: Use the multipath iterator to assign a ...")
Cc: stable@vger.kernel.org # v4.9+
Signed-off-by: NAnna Schumaker <Anna.Schumaker@Netapp.com>
      0f90be13
  13. 31 7月, 2018 1 次提交
  15. 27 7月, 2018 1 次提交
  17. 19 6月, 2018 2 次提交
  19. 10 6月, 2018 2 次提交
  21. 06 6月, 2018 2 次提交
    • C
      NFSv4.0: Remove transport protocol name from non-UCS client ID · 025bb9f8
      由 Chuck Lever 提交于 
      Commit 69dd716c ("NFSv4: Add socket proto argument to
setclientid") (2007) added the transport protocol name to the client
ID string, but the patch description doesn't explain why this was
necessary.

At that time, the only transport protocol name that would have been
used is "tcp" (for both IPv4 and IPv6), resulting in no additional
distinctiveness of the client ID string.

Since there is one client instance, the server should recognize it's
state whether the client is connecting via TCP or RDMA. Same client,
same lease.
Signed-off-by: NChuck Lever <chuck.lever@oracle.com>
Signed-off-by: NTrond Myklebust <trond.myklebust@hammerspace.com>
      025bb9f8
    • C
      NFSv4.0: Remove cl_ipaddr from non-UCS client ID · 848a4eb2
      由 Chuck Lever 提交于 
      It is possible for two distinct clients to have the same cl_ipaddr:

 - if the client admin disables callback with clientaddr=0.0.0.0 on
   more than one client

 - if two clients behind separate NATs use the same private subnet
   number

 - if the client admin specifies the same address via clientaddr=
   mount option (pointing the server at the same NAT box, for
   example)

Because of the way the Linux NFSv4.0 client constructs its client
ID string by default, such clients could interfere with each others'
lease state when mounting the same server:

	scnprintf(str, len, "Linux NFSv4.0 %s/%s %s",
		clp->cl_ipaddr,
		rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR),
		rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_PROTO));

cl_ipaddr is set to the value of the clientaddr= mount option. Two
clients whose addresses are 192.168.3.77 that mount the same server
(whose public IP address is, say, 3.4.5.6) would both generate the
same client ID string when sending a SETCLIENTID:

  Linux NFSv4.0 192.168.3.77/3.4.5.6 tcp

and thus the server would not be able to distinguish the clients'
leases. If both clients are using AUTH_SYS when sending SETCLIENTID
then the server could possibly permit the two clients to interfere
with or purge each others' leases.

To better ensure that Linux's NFSv4.0 client ID strings are distinct
in these cases, remove cl_ipaddr from the client ID string and
replace it with something more likely to be unique. Note that the
replacement looks a lot like the uniform client ID string.
Signed-off-by: NChuck Lever <chuck.lever@oracle.com>
Signed-off-by: NTrond Myklebust <trond.myklebust@hammerspace.com>
      848a4eb2
  23. 05 6月, 2018 6 次提交
  25. 01 6月, 2018 12 次提交