Currently, if our session is closed (due to a timeout, or explicit close,
or whatever), we just sit there doing nothing unless/until the MDS
restarts, at which point we try to reconnect.
Change client to attempt an immediate reconnect if our session is closed.
Note that currently the MDS doesn't support this, and our attempt will
fail. We'll get a session CLOSE, our caps and dirty cap state will be
dropped, and the client will be free to attempt to reconnect. That's
clearly not as nice as a successful reconnect, but it at least allows us
to try to carry on, and in the future the MDS will support a reconnect
and we will fare better.
Signed-off-by: Sage Weil <sage@newdream.net>
Pass a ceph_mds_session, since the caller has it.
Remove the dead code for sending empty reconnects. It used to be used
when the MDS contacted _us_ to solicit a reconnect, and we could reply
saying "go away, I have no session." Now we only send reconnects based
on the mds map, and only when we do in fact have an open session.
Signed-off-by: Sage Weil <sage@newdream.net>
We used to infer reconnect success by watching the MDS state, essentially
assuming that hearing nothing meant things were ok. That wasn't
particularly reliable. Instead, the MDS replies with an explicit OPEN
message to indicate success.
Strictly speaking, this is a protocol change, but it is a backwards
compatible one that does not break new clients + old servers or old
clients + new servers. At least not yet.
Drop unused @all argument from kick_requests while we're at it.
Signed-off-by: Sage Weil <sage@newdream.net>
On OPENING we shouldn't have any caps (or releases).
On CLOSING, we should wait until we succeed (and throw it all out), or
don't (and are OPEN again).
On RECONNECTING we can wait until we are OPEN.
Signed-off-by: Sage Weil <sage@newdream.net>
If the MDS restarts, the expire caps state is no longer shared, and can be
thrown out. Caps state will be rebuilt on the MDS during the reconnect
process that follows. Zero out any release messages and adjust the
release counter accordingly.
Signed-off-by: Sage Weil <sage@newdream.net>
This is being done so that we could reuse the statfs
infrastructure with other requests that return values.
Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
The CEPH_FEATURE_NOSRCADDR protocol feature avoids putting the full source
address in each message header (twice). This patch switches the client to
the new scheme, and _requires_ this feature on the server. The server
will support both the old and new schemes. That means an old client will
work with a new server, but a new client will not work with an old server.
Signed-off-by: Sage Weil <sage@newdream.net>
The bdi_setup_and_register() helper doesn't help us since we bdi_init() in
create_client() and bdi_register() only when sget() succeeds.
Signed-off-by: Sage Weil <sage@newdream.net>
We want to assign an offset when the dentry goes from null to linked, which
is always done by splice_dentry(). Notably, we should NOT assign an
offset when a dentry is first created and is still null.
BUG if we try to splice a non-null dentry (we shouldn't).
Signed-off-by: Sage Weil <sage@newdream.net>
If the version hasn't changed, don't rebuild the index.
Signed-off-by: Henry C Chang <henry_c_chang@tcloudcomputing.com>
Signed-off-by: Sage Weil <sage@newdream.net>
If we use the xattr_blob, clear the pointer so we don't release the memory
at the bottom of the fuction.
Reported-by: Henry C Chang <henry_c_chang@tcloudcomputing.com>
Signed-off-by: Sage Weil <sage@newdream.net>
Simplify messenger locking, and close race between ceph_con_close() setting
the CLOSED bit and con_work() checking the bit, then taking the mutex.
Signed-off-by: Sage Weil <sage@newdream.net>
d_obtain_alias() doesn't return NULL, it returns an ERR_PTR().
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Sage Weil <sage@newdream.net>
We only need to pass in front_len. Callers can attach any other payload
pieces (middle, data) as they see fit.
Signed-off-by: Sage Weil <sage@newdream.net>
Returning ERR_PTR(-ENOMEM) is useless extra work. Return NULL on failure
instead, and fix up the callers (about half of which were wrong anyway).
Signed-off-by: Sage Weil <sage@newdream.net>
Since we don't need to maintain large pools of messages, we can just
use the standard mempool_t. We maintain a msgpool 'wrapper' because we
need the mempool_t* in the alloc function, and mempool gives us only
pool_data.
Signed-off-by: Sage Weil <sage@newdream.net>
ceph_sb_to_client and ceph_client are really identical, we need to dump
one; while function ceph_client is confusing with "struct ceph_client",
ceph_sb_to_client's definition is more clear; so we'd better switch all
call to ceph_sb_to_client.
-static inline struct ceph_client *ceph_client(struct super_block *sb)
-{
- return sb->s_fs_info;
-}
Signed-off-by: Cheng Renquan <crquan@gmail.com>
Signed-off-by: Sage Weil <sage@newdream.net>
This would only trigger if we bailed out before resetting r_con_filling_msg
because the server reply was corrupt (oversized).
Signed-off-by: Sage Weil <sage@newdream.net>
"xattr" is never NULL here. We took care of that in the previous
if statement block.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Sage Weil <sage@newdream.net>
Following Nick Piggin patches in btrfs, pagecache pages should be
allocated with __page_cache_alloc, so they obey pagecache memory
policies.
Also, using add_to_page_cache_lru instead of using a private
pagevec where applicable.
Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
If we abort a request, we return to caller, but the request may still
complete. And if we hold the dir FILE_EXCL bit, we may not release a
lease when sending a request. A simple un-tar, control-c, un-tar again
will reproduce the bug (manifested as a 'Cannot open: File exists').
Ensure we invalidate affected dentry leases (as well dir I_COMPLETE) so
we don't have valid (but incorrect) leases. Do the same, consistently, at
other sites where I_COMPLETE is similarly cleared.
Signed-off-by: Sage Weil <sage@newdream.net>
When we abort requests we need to prevent fill_trace et al from doing
anything that relies on locks held by the VFS caller. This fixes a race
between the reply handler and the abort code, ensuring that continue
holding the dir mutex until the reply handler completes.
Signed-off-by: Sage Weil <sage@newdream.net>
We would occasionally BUG out in the reply handler because r_reply was
nonzero, due to a race with ceph_mdsc_do_request temporarily setting
r_reply to an ERR_PTR value. This is unnecessary, messy, and also wrong
in the EIO case.
Clean up by consistently using r_err for errors and r_reply for messages.
Also fix the abort logic to trigger consistently for all errors that return
to the caller early (e.g., EIO from timeout case). If an abort races with
a reply, use the result from the reply.
Also fix locking for r_err, r_reply update in the reply handler.
Signed-off-by: Sage Weil <sage@newdream.net>
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
rtnetlink: make SR-IOV VF interface symmetric
sctp: delete active ICMP proto unreachable timer when free transport
tcp: fix MD5 (RFC2385) support
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
MIPS: Oprofile: Fix Loongson irq handler
MIPS: N32: Use compat version for sys_ppoll.
MIPS FPU emulator: allow Cause bits of FCSR to be writeable by ctc1
Now we have a set of nested attributes:
IFLA_VFINFO_LIST (NESTED)
IFLA_VF_INFO (NESTED)
IFLA_VF_MAC
IFLA_VF_VLAN
IFLA_VF_TX_RATE
This allows a single set to operate on multiple attributes if desired.
Among other things, it means a dump can be replayed to set state.
The current interface has yet to be released, so this seems like
something to consider for 2.6.34.
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
