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* ec: Fix some size_t vars to 64 bits even on 32 bits machinesXavier Hernandez2014-09-196-21/+20
| | | | | | | | | | | | | | | | | | | The 64 bits 'trusted.ec.size' extended attribute was incorrectly computed on 32 bits machines due to an overflow on negative numbers. Also changed some potentially dangerous uses of size_t in other places. This is a backport of http://review.gluster.org/8738/ Change-Id: Id76cfe49a2f350e564b5c71d8c8644fb9ce86662 BUG: 1144407 Signed-off-by: Xavier Hernandez <xhernandez@datalab.es> Reviewed-on: http://review.gluster.org/8779 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* ec: Fix invalid inode lock in ftruncateXavier Hernandez2014-09-195-21/+21
| | | | | | | | | | | | | | | | | | | | | | The fops 'truncate' and 'ftruncate' share some code and inodelk() was always made against the inode inside the loc_t structure instead of that of fd_t. Since ftruncate has the loc initialized to NULL, this fop was executed without any lock, allowing some concurrent modifications in the file size. Also changed the way in which 'fop' and 'ffop' are differentiated in shared code. Now it uses 'id' field instead of checking if 'fd' is NULL. This is a backport of http://review.gluster.org/8695/ Change-Id: Ibd18accf2652193b395a841b9029729e5f4867c6 BUG: 1140847 Signed-off-by: Xavier Hernandez <xhernandez@datalab.es> Reviewed-on: http://review.gluster.org/8780 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* ec: Optimize read/write performanceXavier Hernandez2014-09-1613-268/+706
| | | | | | | | | | | | | | | | | | | | This patch significantly improves performance of read/write operations on a dispersed volume by reusing previous inodelk/ entrylk operations on the same inode/entry. This reduces the latency of each individual operation considerably. Inode version and size are also updated when needed instead of on each request. This gives an additional boost. This is a backport of http://review.gluster.org/8369/ Change-Id: I4b98d5508c86b53032e16e295f72a3f83fd8fcac BUG: 1140844 Signed-off-by: Xavier Hernandez <xhernandez@datalab.es> Reviewed-on: http://review.gluster.org/8746 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com>
* ec: Only heal data/metadata when inode has enough informationXavier Hernandez2014-09-161-0/+8
| | | | | | | | | | | | | | | | Sometimes loc_t structure in a heal request doesn't contain enough information to do an inodelk call (basically the gfid is missing). In these cases, self heal only recovers entry information. This is a backport of http://review.gluster.org/8368/ Change-Id: I459990c7df728ff4baf164df046672ddcde3efa5 BUG: 1140626 Signed-off-by: Xavier Hernandez <xhernandez@datalab.es> Reviewed-on: http://review.gluster.org/8747 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com>
* ec: Do not destroy inode context on inode invalidationXavier Hernandez2014-09-121-28/+13
| | | | | | | | | | | | | | Currently there is no need to handle inode invalidation requests, so this callback has been removed. This is a backport of http://review.gluster.org/8420/ Change-Id: I0ac2e47679bf62b1493e0403178305923bc036e8 BUG: 1140846 Signed-off-by: Xavier Hernandez <xhernandez@datalab.es> Reviewed-on: http://review.gluster.org/8702 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* ec: Removed SSE2 dependencyXavier Hernandez2014-09-127-10271/+11684
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements the Galois Field multiplications using pure C code without any assembler support. This makes the ec xlator portable to other architectures. In the future it will be possible to use an optimized implementation of the multiplications using architecture dependent facilities (it will be automatically detected and configured). To allow bricks with different machine word sizes to be able to work seamlessly in the same volume, the minimum fragment length to be stored in any brick has been fixed to 512 bytes. Otherwise, different implementations will corrupt the data (SSE2 used 128 bytes, while new implementation would have used 64). This patch also removes the '-msse2' option added on patch http://review.gluster.org/8396/ This is a backport of http://review.gluster.org/8413/ Change-Id: Iaf6e4ef3dcfda6c68f48f16ca46fc4fb61a215f4 BUG: 1140845 Signed-off-by: Xavier Hernandez <xhernandez@datalab.es> Reviewed-on: http://review.gluster.org/8701 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cluster/ec: Fix incorrect management of NFS requestsXavier Hernandez2014-08-113-89/+51
| | | | | | | | | | | | | | | | | | | | | | Some operations, specially those comming from NFS, do not use a regular fd and use an anonymous fd (i.e. a previous open call has not been sent). Any context information created during open or create will not be present on these fd's, so we simply return NULL for contexts of those fd. Also it seems that NFS can send write requests with a very big buffer (higher that the default value of 128 KB). Some changes have been made to correctly handle these large buffers. This is a backport of http://review.gluster.org/8367. Change-Id: I281476bd0d2cbaad231822248d6a616fcf5d4003 BUG: 1126734 Signed-off-by: Xavier Hernandez <xhernandez@datalab.es> Reviewed-on: http://review.gluster.org/8367 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com> Reviewed-on: http://review.gluster.org/8416
* ec: Add -msse2 option to avoid fedora/rawhide compilation errorsXavier Hernandez2014-08-031-1/+1
| | | | | | | | | | | | | | | | | | | This solves a compilation error on some compiler versions. To avoid compilation issues on non-Intel architectures, patch http://review.gluster.org/8381/ has already been merged. It disables ec on those architectures. These modifications are temporary patches until a proper solution for bug #1125166 is ready. This is a backport of http://review.gluster.org/8395/ Change-Id: I74d0b79e84601cc4f86ad08ce0f8102b99a79a68 BUG: 1125277 Signed-off-by: Xavier Hernandez <xhernandez@datalab.es> Reviewed-on: http://review.gluster.org/8396 Reviewed-by: Niels de Vos <ndevos@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* ec: Fixed coverity scan issuesXavier Hernandez2014-08-039-39/+66
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CID list: 1226163 Logically dead code 1226166 Missing break in switch 1226167 Missing break in switch 1226168 Missing break in switch 1226169 Missing break in switch 1226170 Missing break in switch 1226171 Missing break in switch 1226172 Missing break in switch 1226173 Missing break in switch 1226174 Missing break in switch 1226175 Missing break in switch 1226176 Missing break in switch 1226177 Missing break in switch 1226178 Data race condition 1226179 Data race condition 1226180 Data race condition 1226181 Thread deadlock 1226182 Uninitialized pointer read 1226183 Uninitialized pointer read 1226184 Read from pointer after free Change-Id: I4d33aa42289371927175c43bb29e018df64fb943 BUG: 1122834 Signed-off-by: Xavier Hernandez <xhernandez@datalab.es> Reviewed-on: http://review.gluster.org/8372 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* porting: include compat-errno.h for errno'sHarshavardhana2014-07-241-0/+1
| | | | | | | | | | | | | | disperse module fails to compile since ENODATA is non-existent on FreeBSD/Darwin Use errno conversion in compat-errno.h to avoid build issues. Change-Id: I0126224f06365e0b8fac16c205f1294863dc2bc4 BUG: 1111774 Signed-off-by: Harshavardhana <harsha@harshavardhana.net> Reviewed-on: http://review.gluster.org/8350 Tested-by: Gluster Build System <jenkins@build.gluster.com>
* porting: use __builtin_ffsll() instead of ffsll()Harshavardhana2014-07-161-0/+4
| | | | | | | | | | | | | - NetBSD/Darwin doesn't implement ffsll() - use Compiler builtin Change-Id: Iee78b4b81747b0bd3877fd2fcb98746f642ce080 BUG: 764655 Signed-off-by: Harshavardhana <harsha@harshavardhana.net> Reviewed-on: http://review.gluster.org/8308 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Xavier Hernandez <xhernandez@datalab.es> Reviewed-by: Justin Clift <justin@gluster.org>
* cluster/ec: Added erasure code translatorXavier Hernandez2014-07-1124-0/+26028
Change-Id: I293917501d5c2ca4cdc6303df30cf0b568cea361 BUG: 1118629 Signed-off-by: Xavier Hernandez <xhernandez@datalab.es> Reviewed-on: http://review.gluster.org/7749 Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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