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qemu-block xlator is not used by anyone, or so I'm told.
It's also substantially out of date. There's little reason to keep
it in our sources. (And FedoraProject doesn't like bundled software
either.)
Change-Id: I4aeb2fdfd962ec6d93de6bae126874121272220a
Signed-off-by: Kaleb S KEITHLEY <kkeithle@redhat.com>
Reviewed-on: http://review.gluster.org/13473
Smoke: Gluster Build System <jenkins@build.gluster.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
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This fixes an assumption that sizeof(size_t) == sizeof(uint64_t), which
is not guaranteed. At least on NetBSD/i386, size_t is 32 bit long.
Caught by tests/basics/file-snapshot.t
BUG: 764655
Change-Id: Ib7620a2ffe8758521886af37bc280101a040d860
Signed-off-by: Emmanuel Dreyfus <manu@netbsd.org>
Reviewed-on: http://review.gluster.org/8441
Reviewed-by: Humble Devassy Chirammal <humble.devassy@gmail.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Dan Lambright <dlambrig@redhat.com>
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The current coroutine model, mapping synctasks 1-1 with qemu internal
Coroutines, has some unresolved raciness issues. This problem usually
manifests as lifecycle mismatches between top-level (gluster created)
synctasks and the subsequently created internal coroutines from that
context. Qemu's internal queueing (and locking) can cause situations
where the top-level synctask is destroyed before the internal scheduler
has released references to memory, leading to use after free crashes
and asserts.
Simplify the coroutine model to use a single synctask as a coroutine
processor and rely on the existing native ucontext coroutine
implementation. The syncenv thread is donated to qemu and ensures a
single top-level coroutine is processed at a time. Qemu now has
complete control over coroutine scheduling.
BUG: 986775
Change-Id: I38223479a608d80353128e390f243933fc946fd6
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-on: http://review.gluster.org/6110
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Add basic backing image support to the block-format mechanism. This
is a functionality checkpoint that enables the raw mechanism
required to support client driven "snapshot" and "clone" requests.
This change enhances the block-format setxattr command to support
an additional and optional backing image reference. For example:
setxattr -n trusted.glusterfs.block-format -v "qcow2:10GB:<bimg>" ./newimage
... where <bimg> refers to the backing image for unallocated blocks
in newimage. <bimg> can be provided in one of two formats:
- a gfid string in the following format (assuming a valid gfid):
<gfid:00000000-0000-0000-0000-000000000000>
- or a filename that must be resident in the same directory as the
new clone file being formatted. E.g.,
setxattr -n trusted.glusterfs.block-format -v "qcow2:10GB:baseimg" ./newimage
This latter format is more restrictive, simply provided for
convenience or until something more refined is available.
This change makes no assumptions about the backing image file and
affords no additional protection. It is up to the user/client to
recognize the relationship between the files and manage them
appropriately (i.e., no writes to the backing image, etc.).
BUG: 986775
Change-Id: I7aff7bdc59b85a6459001a6bfeae4db6bf74f703
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-on: http://review.gluster.org/5967
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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This patch adds support for internals snapshots using QCOW2 and
general framework for external snapshots (next patch) with
QCOW2 and QED.
For internal snapshots, the file must be "initialized" or
"formatted" into QCOW2 format, and specify a file size.
Snapshots can be created, deleted, and applied ("goto").
e.g:
// Format and Initialize
sh# setfattr -n trusted.glusterfs.block-format -v qcow2:10GB /mnt/imgfile
sh# ls -l /mnt/imgfile
-rw-r--r-- 1 root root 10G Jul 18 21:20 imgfile
// Create a snapshot
sh# setfattr -n trusted.glusterfs.block-snapshot-create -v name1 imgfile
// Apply a snapshot
sh# setfattr -n trusted.gluterfs.block-snapshot-goto -v name1 imgfile
Change-Id: If993e057a9455967ba3fa9dcabb7f74b8b2cf4c3
BUG: 986775
Signed-off-by: Anand Avati <avati@redhat.com>
Reviewed-on: http://review.gluster.org/5367
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
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