Currently EC tries to reopen fd's that have been opened while a brick was down. This is done as part of regular write operations, just after having acquired the locks, and it's sent as a sub-fop of the main write fop. There were two problems: 1. The reopen was attempted on all UP bricks, even if a previous lock didn't succeed. This is incorrect because most probably the open will fail. 2. If reopen is sent and fails, the error is propagated to the main operation, causing it to fail when it shouldn't. To fix this, we only attempt reopens on bricks where the current fop owns a lock, and we prevent any error to be propagated to the main fop. To implement this behaviour an argument used to indicate the minimum number of required answers has overloaded to also include some flags. To make the change consistent, it has been necessary to rename the argument, which means that a lot of files have been changed. However there are no functional changes. This change has also uncovered a problem in discard code, which didn't correctely process requests of small sizes because no real discard fop was being processed, only a write of 0's on some region. In this case some fields of the fop remained uninitialized or with incorrect values. To fix this, a new function has been created to simulate success on a fop and it's used in the discard case. Thanks to Pranith for providing a test script that has also detected an issue in this patch. This patch includes a small modification of this script to force data to be written into bricks before stopping them. Backport of: > Change-Id: If272343873369186c2fb8f43c1d9c52c3ea304ec > BUG: bz#1699866 > Signed-off-by: Xavi Hernandez <xhernandez@redhat.com> Change-Id: If272343873369186c2fb8f43c1d9c52c3ea304ec Fixes: bz#1699917 Signed-off-by: Xavi Hernandez <xhernandez@redhat.com>
* Remove the options to load old symbol. * keep only 'xlator_api' symbol from being exported using xlator.sym * add xlator_api to all the xlators where its missing NOTE: This covers all the xlators which has at least a test case to validate its loading. If there is a translator, which doesn't have any test, then we should probably remove that from codebase. fixes: #164 Change-Id: Ibcdc8c9844cda6b4463d907a15813745d14c1ebb Signed-off-by: Amar Tumballi <amarts@redhat.com>
libglusterfs devel package headers are referenced in code using include semantics for a program, this while it works can be better especially when dealing with out of tree xlator builds or in general out of tree devel package usage. Towards this, the following changes are done, - moved all devel headers under a glusterfs directory - Included these headers using system header notation <> in all code outside of libglusterfs - Included these headers using own program notation "" within libglusterfs This change although big, is just moving around the headers and making it correct when including these headers from other sources. This helps us correctly include libglusterfs includes without namespace conflicts. Change-Id: Id2a98854e671a7ee5d73be44da5ba1a74252423b Updates: bz#1193929 Signed-off-by: ShyamsundarR <srangana@redhat.com>
Currently, there are possibilities in few places, where a user-controlled (like filename, program parameter etc) string can be passed as 'fmt' for printf(), which can lead to segfault, if the user's string contains '%s', '%d' in it. While fixing it, makes sense to make the explicit check for such issues across the codebase, by making the format call properly. Fixes: CVE-2018-14661 Fixes: bz#1644763 Change-Id: Ib547293f2d9eb618594cbff0df3b9c800e88bde4 Signed-off-by: Amar Tumballi <amarts@redhat.com>
When compiling in other architectures there appear many warnings. Some of them are actual problems that prevent gluster to work correctly on those architectures. Change-Id: Icdc7107a2bc2da662903c51910beddb84bdf03c0 fixes: bz#1632717 Signed-off-by: Xavi Hernandez <xhernandez@redhat.com>
Change-Id: Ia84cc24c8924e6d22d02ac15f611c10e26db99b4 Signed-off-by: Nigel Babu <nigelb@redhat.com>
Please review, it's not always just the comments that were fixed. I've had to revert of course all calls to creat() that were changed to create() ... Only compile-tested! Change-Id: I7d02e82d9766e272a7fd9cc68e51901d69e5aab5 updates: bz#1193929 Signed-off-by: Yaniv Kaul <ykaul@redhat.com>
fixes bz#1597156 Change-Id: I323eb9190e40b12df216698dcdba74a6d336beeb Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Multiple pre-op xattrop can be simultaneously being processed. On the cbk it was checked if the fop was waiting for some specific data (like size and version) and, if so, it was assumed that this answer should contain that data. This is not true, since a fop can be waiting for some data, but it may come from the xattrop of another fop. This patch differentiates between needing some information and providing it. This is related to parallel writes. Disabling them fixed the problem, but also prevented concurrent reads. A change has been made so that disabling parallel writes still allows parallel reads. Fixes: bz#1578325 Change-Id: I74772ad6b80b7b37805da93d5ec3ae099e96b041 Signed-off-by: Xavi Hernandez <xhernandez@redhat.com>
Change-Id: I0a290396c30c635b13ee73004d20259efb76a954 fixes: bz#1563945 Signed-off-by: Ashish Pandey <aspandey@redhat.com>