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* Merge git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-clientLinus Torvalds2012-05-30
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ceph updates from Sage Weil: "There are some updates and cleanups to the CRUSH placement code, a bug fix with incremental maps, several cleanups and fixes from Josh Durgin in the RBD block device code, a series of cleanups and bug fixes from Alex Elder in the messenger code, and some miscellaneous bounds checking and gfp cleanups/fixes." Fix up trivial conflicts in net/ceph/{messenger.c,osdmap.c} due to the networking people preferring "unsigned int" over just "unsigned". * git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (45 commits) libceph: fix pg_temp updates libceph: avoid unregistering osd request when not registered ceph: add auth buf in prepare_write_connect() ceph: rename prepare_connect_authorizer() ceph: return pointer from prepare_connect_authorizer() ceph: use info returned by get_authorizer ceph: have get_authorizer methods return pointers ceph: ensure auth ops are defined before use ceph: messenger: reduce args to create_authorizer ceph: define ceph_auth_handshake type ceph: messenger: check return from get_authorizer ceph: messenger: rework prepare_connect_authorizer() ceph: messenger: check prepare_write_connect() result ceph: don't set WRITE_PENDING too early ceph: drop msgr argument from prepare_write_connect() ceph: messenger: send banner in process_connect() ceph: messenger: reset connection kvec caller libceph: don't reset kvec in prepare_write_banner() ceph: ignore preferred_osd field ceph: fully initialize new layout ...
| * libceph: fix pg_temp updatesSage Weil2012-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | Usually, we are adding pg_temp entries or removing them. Occasionally they update. In that case, osdmap_apply_incremental() was failing because the rbtree entry already exists. Fix by removing the existing entry before inserting a new one. Fixes http://tracker.newdream.net/issues/2446 Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com>
| * libceph: avoid unregistering osd request when not registeredSage Weil2012-05-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a race between two __unregister_request() callers: the reply path and the ceph_osdc_wait_request(). If we get a reply *and* the timeout expires at roughly the same time, both callers will try to unregister the request, and the second one will do bad things. Simply check if the request is still already unregistered; if so, return immediately and do nothing. Fixes http://tracker.newdream.net/issues/2420 Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com>
| * ceph: add auth buf in prepare_write_connect()Alex Elder2012-05-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the addition of the authorizer buffer to a connection's out_kvec out of get_connect_authorizer() and into its caller. This way, the caller--prepare_write_connect()--can avoid adding the connect header to out_kvec before it has been fully initialized. Prior to this patch, it was possible for a connect header to be sent over the wire before the authorizer protocol or buffer length fields were initialized. An authorizer buffer associated with that header could also be queued to send only after the connection header that describes it was on the wire. Fixes http://tracker.newdream.net/issues/2424 Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * ceph: rename prepare_connect_authorizer()Alex Elder2012-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Change the name of prepare_connect_authorizer(). The next patch is going to make this function no longer add anything to the connection's out_kvec, so it will no longer fit the pattern of the rest of the prepare_connect_*() functions. In addition, pass the address of a variable that will hold the authorization protocol to use. Move the assignment of that to the connection's out_connect structure into prepare_write_connect(). Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * ceph: return pointer from prepare_connect_authorizer()Alex Elder2012-05-17
| | | | | | | | | | | | | | | | Change prepare_connect_authorizer() so it returns a pointer (or pointer-coded error). Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * ceph: use info returned by get_authorizerAlex Elder2012-05-17
| | | | | | | | | | | | | | | | | | | | Rather than passing a bunch of arguments to be filled in with the content of the ceph_auth_handshake buffer now returned by the get_authorizer method, just use the returned information in the caller, and drop the unnecessary arguments. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * ceph: have get_authorizer methods return pointersAlex Elder2012-05-17
| | | | | | | | | | | | | | | | | | | | Have the get_authorizer auth_client method return a ceph_auth pointer rather than an integer, pointer-encoding any returned error value. This is to pave the way for making use of the returned value in an upcoming patch. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * ceph: ensure auth ops are defined before useAlex Elder2012-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the create_authorizer method for both the mds and osd clients, the auth_client->ops pointer is blindly dereferenced. There is no obvious guarantee that this pointer has been assigned. And furthermore, even if the ops pointer is non-null there is definitely no guarantee that the create_authorizer or destroy_authorizer methods are defined. Add checks in both routines to make sure they are defined (non-null) before use. Add similar checks in a few other spots in these files while we're at it. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * ceph: messenger: reduce args to create_authorizerAlex Elder2012-05-17
| | | | | | | | | | | | | | | | | | | | Make use of the new ceph_auth_handshake structure in order to reduce the number of arguments passed to the create_authorizor method in ceph_auth_client_ops. Use a local variable of that type as a shorthand in the get_authorizer method definitions. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * ceph: define ceph_auth_handshake typeAlex Elder2012-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | The definitions for the ceph_mds_session and ceph_osd both contain five fields related only to "authorizers." Encapsulate those fields into their own struct type, allowing for better isolation in some upcoming patches. Fix the #includes in "linux/ceph/osd_client.h" to lay out their more complete canonical path. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * ceph: messenger: check return from get_authorizerAlex Elder2012-05-17
| | | | | | | | | | | | | | | | | | In prepare_connect_authorizer(), a connection's get_authorizer method is called but ignores its return value. This function can return an error, so check for it and return it if that ever occurs. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * ceph: messenger: rework prepare_connect_authorizer()Alex Elder2012-05-17
| | | | | | | | | | | | | | | | | | | | | | Change prepare_connect_authorizer() so it returns without dropping the connection mutex if the connection has no get_authorizer method. Use the symbolic CEPH_AUTH_UNKNOWN instead of 0 when assigning authorization protocols. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * ceph: messenger: check prepare_write_connect() resultAlex Elder2012-05-17
| | | | | | | | | | | | | | | | | | | | prepare_write_connect() can return an error, but only one of its callers checks for it. All the rest are in functions that already return errors, so it should be fine to return the error if one gets returned. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * ceph: don't set WRITE_PENDING too earlyAlex Elder2012-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | prepare_write_connect() prepares a connect message, then sets WRITE_PENDING on the connection. Then *after* this, it calls prepare_connect_authorizer(), which updates the content of the connection buffer already queued for sending. It's also possible it will result in prepare_write_connect() returning -EAGAIN despite the WRITE_PENDING big getting set. Fix this by preparing the connect authorizer first, setting the WRITE_PENDING bit only after that is done. Partially addresses http://tracker.newdream.net/issues/2424 Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * ceph: drop msgr argument from prepare_write_connect()Alex Elder2012-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | In all cases, the value passed as the msgr argument to prepare_write_connect() is just con->msgr. Just get the msgr value from the ceph connection and drop the unneeded argument. The only msgr passed to prepare_write_banner() is also therefore just the one from con->msgr, so change that function to drop the msgr argument as well. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * ceph: messenger: send banner in process_connect()Alex Elder2012-05-17
| | | | | | | | | | | | | | | | | | | | | | prepare_write_connect() has an argument indicating whether a banner should be sent out before sending out a connection message. It's only ever set in one of its callers, so move the code that arranges to send the banner into that caller and drop the "include_banner" argument from prepare_write_connect(). Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * ceph: messenger: reset connection kvec callerAlex Elder2012-05-17
| | | | | | | | | | | | | | | | | | | | Reset a connection's kvec fields in the caller rather than in prepare_write_connect(). This ends up repeating a few lines of code but it's improving the separation between distinct operations on the connection, which we can take advantage of later. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * libceph: don't reset kvec in prepare_write_banner()Alex Elder2012-05-17
| | | | | | | | | | | | | | | | Move the kvec reset for a connection out of prepare_write_banner and into its only caller. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * ceph: messenger: change read_partial() to take "end" argAlex Elder2012-05-14
| | | | | | | | | | | | | | | | | | Make the second argument to read_partial() be the ending input byte position rather than the beginning offset it now represents. This amounts to moving the addition "to + size" into the caller. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * ceph: messenger: update "to" in read_partial() callerAlex Elder2012-05-14
| | | | | | | | | | | | | | | | | | | | | | | | | | read_partial() always increases whatever "to" value is supplied by adding the requested size to it, and that's the only thing it does with that pointed-to value. Do that pointer advance in the caller (and then only when the updated value will be subsequently used), and change the "to" parameter to be an in-only and non-pointer value. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * ceph: messenger: use read_partial() in read_partial_message()Alex Elder2012-05-14
| | | | | | | | | | | | | | | | | | There are two blocks of code in read_partial_message()--those that read the header and footer of the message--that can be replaced by a call to read_partial(). Do that. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
| * ceph: osd_client: fix endianness bug in osd_req_encode_op()Alex Elder2012-05-14
| | | | | | | | | | | | | | | | | | | | From Al Viro <viro@zeniv.linux.org.uk> Al Viro noticed that we were using a non-cpu-encoded value in a switch statement in osd_req_encode_op(). The result would clearly not work correctly on a big-endian machine. Signed-off-by: Alex Elder <elder@dreamhost.com>
| * crush: warn on do_rule failureSage Weil2012-05-07
| | | | | | | | | | | | | | | | If we get an error code from crush_do_rule(), print an error to the console. Reviewed-by: Alex Elder <elder@inktank.com> Signed-off-by: Sage Weil <sage@inktank.com>
| * crush: fix memory leak when destroying tree bucketsSage Weil2012-05-07
| | | | | | | | | | | | | | | | Reflects ceph.git commit 46d63d98434b3bc9dad2fc9ab23cbaedc3bcb0e4. Reported-by: Alexander Lyakas <alex.bolshoy@gmail.com> Reviewed-by: Alex Elder <elder@inktank.com> Signed-off-by: Sage Weil <sage@inktank.com>
| * crush: fix tree node weight lookupSage Weil2012-05-07
| | | | | | | | | | | | | | | | | | Fix the node weight lookup for tree buckets by using a correct accessor. Reflects ceph.git commit d287ade5bcbdca82a3aef145b92924cf1e856733. Reviewed-by: Alex Elder <elder@inktank.com> Signed-off-by: Sage Weil <sage@inktank.com>
| * crush: remove parent mapsSage Weil2012-05-07
| | | | | | | | | | | | | | | | | | These were used for the ill-fated forcefeed feature. Remove them. Reflects ceph.git commit ebdf80edfecfbd5a842b71fbe5732857994380c1. Reviewed-by: Alex Elder <elder@inktank.com> Signed-off-by: Sage Weil <sage@inktank.com>
| * crush: remove forcefeed functionalitySage Weil2012-05-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove forcefeed functionality from CRUSH. This is an ugly misfeature that is mostly useless and unused. Remove it. Reflects ceph.git commit ed974b5000f2851207d860a651809af4a1867942. Reviewed-by: Alex Elder <elder@inktank.com> Signed-off-by: Sage Weil <sage@inktank.com> Conflicts: net/ceph/crush/mapper.c
| * crush: use a temporary variable to simplify crush_do_ruleSage Weil2012-05-07
| | | | | | | | | | | | | | | | | | | | Use a temporary variable here to avoid repeated array lookups and clean up the code a bit. This reflects ceph.git commit 6b5be27634ad307b471a5bf0db85c4f5c834885f. Reviewed-by: Alex Elder <elder@inktank.com> Signed-off-by: Sage Weil <sage@inktank.com>
| * crush: be more tolerant of nonsensical crush mapsSage Weil2012-05-07
| | | | | | | | | | | | | | | | | | | | If we get a map that doesn't make sense, error out or ignore the badness instead of BUGging out. This reflects the ceph.git commits 9895f0bff7dc68e9b49b572613d242315fb11b6c and 8ded26472058d5205803f244c2f33cb6cb10de79. Reviewed-by: Alex Elder <elder@inktank.com> Signed-off-by: Sage Weil <sage@inktank.com>
| * crush: adjust local retry thresholdSage Weil2012-05-07
| | | | | | | | | | | | | | | | | | This small adjustment reflects a change that was made in ceph.git commit af6a9f30696c900a2a8bd7ae24e8ed15fb4964bb, about 6 months ago. An N-1 search is not exhaustive. Fixed ceph.git bug #1594. Reviewed-by: Alex Elder <elder@inktank.com> Signed-off-by: Sage Weil <sage@inktank.com>
| * crush: clean up types, const-nessSage Weil2012-05-07
| | | | | | | | | | | | | | | | | | | | | | Move various types from int -> __u32 (or similar), and add const as appropriate. This reflects changes that have been present in the userland implementation for some time. Reviewed-by: Alex Elder <elder@inktank.com> Signed-off-by: Sage Weil <sage@inktank.com>
| * ceph: drop support for preferred_osd pgsSage Weil2012-05-07
| | | | | | | | | | | | | | | | | | | | | | | | | | This was an ill-conceived feature that has been removed from Ceph. Do this gracefully: - reject attempts to specify a preferred_osd via the ioctl - stop exposing this information via virtual xattrs - always fill in -1 for requests, in case we talk to an older server - don't calculate preferred_osd placements/pgids Reviewed-by: Alex Elder <elder@inktank.com> Signed-off-by: Sage Weil <sage@inktank.com>
* | crush: include header for global symbolshartleys2012-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Include the header to pickup the definitions of the global symbols. Quiets the following sparse warnings: warning: symbol 'crush_find_rule' was not declared. Should it be static? warning: symbol 'crush_do_rule' was not declared. Should it be static? Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Sage Weil <sage@newdream.net> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: cleanup unsigned to unsigned intEric Dumazet2012-04-15
|/ | | | | | | Use of "unsigned int" is preferred to bare "unsigned" in net tree. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* libceph: isolate kmap() call in write_partial_msg_pages()Alex Elder2012-03-22
| | | | | | | | | | | | | In write_partial_msg_pages(), every case now does an identical call to kmap(page). Instead, just call it once inside the CRC-computing block where it's needed. Move the definition of kaddr inside that block, and make it a (char *) to ensure portable pointer arithmetic. We still don't kunmap() it until after the sendpage() call, in case that also ends up needing to use the mapping. Signed-off-by: Alex Elder <elder@dreamhost.com> Reviewed-by: Sage Weil <sage@newdream.net>
* libceph: rename "page_shift" variable to something sensibleAlex Elder2012-03-22
| | | | | | | | | | | | | | | In write_partial_msg_pages() there is a local variable used to track the starting offset within a bio segment to use. Its name, "page_shift" defies the Linux convention of using that name for log-base-2(page size). Since it's only used in the bio case rename it "bio_offset". Use it along with the page_pos field to compute the memory offset when computing CRC's in that function. This makes the bio case match the others more closely. Signed-off-by: Alex Elder <elder@dreamhost.com> Reviewed-by: Sage Weil <sage@newdream.net>
* libceph: get rid of zero_page_addressAlex Elder2012-03-22
| | | | | | | | | | | | | | There's not a lot of benefit to zero_page_address, which basically holds a mapping of the zero page through the life of the messenger module. Even with our own mapping, the sendpage interface where it's used may need to kmap() it again. It's almost certain to be in low memory anyway. So stop treating the zero page specially in write_partial_msg_pages() and just get rid of zero_page_address entirely. Signed-off-by: Alex Elder <elder@dreamhost.com> Reviewed-by: Sage Weil <sage@newdream.net>
* libceph: only call kernel_sendpage() via helperAlex Elder2012-03-22
| | | | | | | | Make ceph_tcp_sendpage() be the only place kernel_sendpage() is used, by using this helper in write_partial_msg_pages(). Signed-off-by: Alex Elder <elder@dreamhost.com> Reviewed-by: Sage Weil <sage@newdream.net>
* libceph: use kernel_sendpage() for sending zeroesAlex Elder2012-03-22
| | | | | | | | | | | | | | If a message queued for send gets revoked, zeroes are sent over the wire instead of any unsent data. This is done by constructing a message and passing it to kernel_sendmsg() via ceph_tcp_sendmsg(). Since we are already working with a page in this case we can use the sendpage interface instead. Create a new ceph_tcp_sendpage() helper that sets up flags to match the way ceph_tcp_sendmsg() does now. Signed-off-by: Alex Elder <elder@dreamhost.com> Reviewed-by: Sage Weil <sage@newdream.net>
* libceph: fix inverted crc option logicAlex Elder2012-03-22
| | | | | | | | | | | | | | | | | | | | | CRC's are computed for all messages between ceph entities. The CRC computation for the data portion of message can optionally be disabled using the "nocrc" (common) ceph option. The default is for CRC computation for the data portion to be enabled. Unfortunately, the code that implements this feature interprets the feature flag wrong, meaning that by default the CRC's have *not* been computed (or checked) for the data portion of messages unless the "nocrc" option was supplied. Fix this, in write_partial_msg_pages() and read_partial_message(). Also change the flag variable in write_partial_msg_pages() to be "no_datacrc" to match the usage elsewhere in the file. This fixes http://tracker.newdream.net/issues/2064 Signed-off-by: Alex Elder <elder@dreamhost.com> Reviewed-by: Sage Weil <sage@newdream.net>
* libceph: some simple changesAlex Elder2012-03-22
| | | | | | | | | | | | Nothing too big here. - define the size of the buffer used for consuming ignored incoming data using a symbolic constant - simplify the condition determining whether to unmap the page in write_partial_msg_pages(): do it for crc but not if the page is the zero page Signed-off-by: Alex Elder <elder@dreamhost.com> Signed-off-by: Sage Weil <sage@newdream.net>
* libceph: small refactor in write_partial_kvec()Alex Elder2012-03-22
| | | | | | | | | Make a small change in the code that counts down kvecs consumed by a ceph_tcp_sendmsg() call. Same functionality, just blocked out a little differently. Signed-off-by: Alex Elder <elder@dreamhost.com> Signed-off-by: Sage Weil <sage@newdream.net>
* libceph: do crc calculations outside loopAlex Elder2012-03-22
| | | | | | | | | Move blocks of code out of loops in read_partial_message_section() and read_partial_message(). They were only was getting called at the end of the last iteration of the loop anyway. Signed-off-by: Alex Elder <elder@dreamhost.com> Signed-off-by: Sage Weil <sage@newdream.net>
* libceph: separate CRC calculation from byte swappingAlex Elder2012-03-22
| | | | | | | | | | | | | | Calculate CRC in a separate step from rearranging the byte order of the result, to improve clarity and readability. Use offsetof() to determine the number of bytes to include in the CRC calculation. In read_partial_message(), switch which value gets byte-swapped, since the just-computed CRC is already likely to be in a register. Signed-off-by: Alex Elder <elder@dreamhost.com> Signed-off-by: Sage Weil <sage@newdream.net>
* libceph: use "do" in CRC-related Boolean variablesAlex Elder2012-03-22
| | | | | | | | | | | | | | | | Change the name (and type) of a few CRC-related Boolean local variables so they contain the word "do", to distingish their purpose from variables used for holding an actual CRC value. Note that in the process of doing this I identified a fairly serious logic error in write_partial_msg_pages(): the value of "do_crc" assigned appears to be the opposite of what it should be. No attempt to fix this is made here; this change preserves the erroneous behavior. The problem I found is documented here: http://tracker.newdream.net/issues/2064 Signed-off-by: Alex Elder <elder@dreamhost.com> Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: ensure Boolean options support both sensesAlex Elder2012-03-22
| | | | | | | | | | | | | Many ceph-related Boolean options offer the ability to both enable and disable a feature. For all those that don't offer this, add a new option so that they do. Note that ceph_show_options()--which reports mount options currently in effect--only reports the option if it is different from the default value. Signed-off-by: Alex Elder <elder@dreamhost.com> Signed-off-by: Sage Weil <sage@newdream.net>
* libceph: a few small changesAlex Elder2012-03-22
| | | | | | | | | | | | | | | | | | This gathers a number of very minor changes: - use %hu when formatting the a socket address's address family - null out the ceph_msgr_wq pointer after the queue has been destroyed - drop a needless cast in ceph_write_space() - add a WARN() call in ceph_state_change() in the event an unrecognized socket state is encountered - rearrange the logic in ceph_con_get() and ceph_con_put() so that: - the reference counts are only atomically read once - the values displayed via dout() calls are known to be meaningful at the time they are formatted Signed-off-by: Alex Elder <elder@dreamhost.com> Signed-off-by: Sage Weil <sage@newdream.net>
* libceph: make ceph_tcp_connect() return intAlex Elder2012-03-22
| | | | | | | | | | There is no real need for ceph_tcp_connect() to return the socket pointer it creates, since it already assigns it to con->sock, which is visible to the caller. Instead, have it return an error code, which tidies things up a bit. Signed-off-by: Alex Elder <elder@dreamhost.com> Signed-off-by: Sage Weil <sage@newdream.net>
* libceph: encapsulate some messenger cleanup codeAlex Elder2012-03-22
| | | | | | | | | Define a helper function to perform various cleanup operations. Use it both in the exit routine and in the init routine in the event of an error. Signed-off-by: Alex Elder <elder@dreamhost.com> Signed-off-by: Sage Weil <sage@newdream.net>
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