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* BD Backend: CLI to create a full/linked clone of a imageM. Mohan Kumar2012-11-291-9/+97
| | | | | | | | | | | | | | | | A new CLI command added to support cloning/snapshotting of a LV device Syntax is: $ gluster bd clone <volname>:<vg>/<lv> <newlv> $ gluster bd snapshot <volname>:<vg>/<lv> <snap_lv> <size> BUG: 805138 Change-Id: Idc2ac14525a3998329c742bf85a06326cac8cd54 Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Reviewed-on: http://review.gluster.org/3719 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* BD Backend: CLI commands to create/delete imageM. Mohan Kumar2012-11-291-76/+292
| | | | | | | | | | | | | | | | | Cli commands added to create/delete a LV device. The following command creates lv in a given vg. $ gluster bd create <volname>:<vgname>/<lvname> <size> The following command deletes lv in a given vg. $ gluster bd delete <volname>:<vgname>/<lvname> BUG: 805138 Change-Id: Ie4e100eca14e2ee32cf2bb4dd064b17230d673bf Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Reviewed-on: http://review.gluster.org/3718 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* BD Backend: Rename LVM. Mohan Kumar2012-11-291-0/+94
| | | | | | | | | BUG: 805138 Change-Id: I18c64435e66ede148c58d412a0639f45554209c8 Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Reviewed-on: http://review.gluster.org/3558 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* BD Backend: Extend size of file (LV)M. Mohan Kumar2012-11-291-6/+104
| | | | | | | | | | | | | | Use the truncate interface to increase the size of file (LV). FIXME: lvm2 library does not provide any interface to extend size of LV. So lvextend binary is forked to achieve the same BUG: 805138 Change-Id: If4c0bd112364437b89e091b7f53764b8e6e01a28 Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Reviewed-on: http://review.gluster.org/3557 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* BD Backend: Full clone and linked cloneM. Mohan Kumar2012-11-291-16/+348
| | | | | | | | | | | | FIXME: There is no lvm2 api to create a LV snapshot. This patch forks lvcreate binary to achieve the same. BUG: 805138 Change-Id: Icdbead16f797162fe6a31a672b619ce6a0391235 Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Reviewed-on: http://review.gluster.org/3556 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* BD Backend: Unlink a file (LV)M. Mohan Kumar2012-11-291-0/+96
| | | | | | | | | BUG: 805138 Change-Id: I53d8a4bc09cbd9766ba937887cadd7ac475017ba Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Reviewed-on: http://review.gluster.org/3555 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* BD Backend: Create a new file (LV)M. Mohan Kumar2012-11-291-8/+254
| | | | | | | | | | | | | | Add support to create a new file (LV) under a directory (VG). By default created LV is of one logical extent size. Also setattr/fsetattr interfaces added as part of this patch. BUG: 805138 Change-Id: I51752b707b3766ab277d623ce574537346f376c9 Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Reviewed-on: http://review.gluster.org/3554 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* BD Backend: Write supportM. Mohan Kumar2012-11-291-0/+243
| | | | | | | | | BUG: 805138 Change-Id: I4a672fc58ee61dead99e0adcd46d7771f3fdd730 Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Reviewed-on: http://review.gluster.org/3553 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* BD Backend: Open,read and related calls support for LVM. Mohan Kumar2012-11-291-0/+271
| | | | | | | | | BUG: 805138 Change-Id: I811c179d4244342537dbedb8a24fd2ec628942ed Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Reviewed-on: http://review.gluster.org/3552 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* xlators: Add Block Device(BD) backend translatorM. Mohan Kumar2012-11-291-0/+896
Add a new server storage xlator 'bd mapper'. Intention of this xlator is to add block device backend support to gluster. It exports block devices as regular files to the gluster client. The immediate goal of this translator is to use logical volumes to store VM images and expose them as files to QEMU/KVM. Given Volume group is represented as directory and its logical volumes as files. By exporting LUNs/LVs as regular files, it becomes possible to: * Associate each VM to a LV/LUN * Use file system commands like cp to take copy of VM images * Create linked clones of VM by doing LV snapshot at server side * Implement thin provisioning by developing a qcow2 translator As of now this patchset maps only logical volumes. BD Mapper volume file specifies which Volume group to export to the client. BD xlator exports the volume group as a directory and all logical volumes under that as regular files. BD xlator uses lvm2-devel APIs for getting the list of Volume Groups and Logical Volumes in the system. The eventual goal of this work is to support thin provisioning, snapshot, copy etc of VM images seamlessly in glusterfs storage environment BUG: 805138 Change-Id: I13b69d39d7fd199c101c8e9e4f2cf10772bdc3dd Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Reviewed-on: http://review.gluster.org/3551 Reviewed-by: Vijay Bellur <vbellur@redhat.com> Tested-by: Vijay Bellur <vbellur@redhat.com>
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