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Objects allocated from a per-thread memory pool keep a reference to it
to be able to return the object to the pool when not used anymore. The
object holding this reference can have a long life cycle that could
survive a glfs_fini() call.
This means that it's unsafe to destroy memory pools from glfs_fini().
Another side effect of destroying memory pools from glfs_fini() is that
the TLS variable that points to one of those pools cannot be reset for
all alive threads. This means that any attempt to allocate memory from
those threads will access already free'd memory, which is very
dangerous.
To fix these issues, mem_pools_fini() doesn't destroy pool lists
anymore. They should be destroyed when the library is unloaded or the
process is terminated, but this cannot be done right now because
gluster doesn't stop other threads before calling exit(), which could
cause some races.
This patch is the backport of 2 master patches:
> Change-Id: Ib189a5510ab6bdac78983c6c65a022e9634b0965
> Fixes: bz#1801684
> Signed-off-by: Xavi Hernandez <xhernandez@redhat.com>
>
> Change-Id: Id7cfb4407fcf208e28f03a7c3cdc3ef9c1f3bf9b
> Fixes: bz#1801684
> Signed-off-by: Xavi Hernandez <xhernandez@redhat.com>
Change-Id: Id7cfb4407fcf208e28f03a7c3cdc3ef9c1f3bf9b
Fixes: bz#1805671
Signed-off-by: Xavi Hernandez <xhernandez@redhat.com>
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Some interdependencies between logging and memory management functions
make it impossible to use the logging framework before initializing
memory subsystem because they both depend on Thread Local Storage
allocated through pthread_key_create() during initialization.
This causes a crash when we try to log something very early in the
initialization phase.
To prevent this, several dynamically allocated TLS structures have
been replaced by static TLS reserved at compile time using '__thread'
keyword. This also reduces the number of error sources, making
initialization simpler.
Backport of:
> BUG: 1193929
> Change-Id: I8ea2e072411e30790d50084b6b7e909c7bb01d50
> Signed-off-by: Xavi Hernandez <xhernandez@redhat.com>
Updates: bz#1724210
Change-Id: I8ea2e072411e30790d50084b6b7e909c7bb01d50
Signed-off-by: Xavi Hernandez <xhernandez@redhat.com>
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Problem: commit 5a152a changed the mechansim of computing the
checksum. In heterogeneous cluster, peers are running into
rejected state because we have different cksum computation
mechansims in upgraded and non-upgraded nodes.
Solution: add a check for op-version so that all the nodes
in the cluster follow the same mechanism for computing the
cksum.
fixes: bz#1684029
> Change-Id: I1508f000e8c9895588b6011b8b6cc0eda7102193
> BUG: bz#1685120
> Signed-off-by: Sanju Rakonde <srakonde@redhat.com>
> (cherry picked from commit 073444b693b7a91c42963512e0fdafb57ad46670)
Change-Id: I1508f000e8c9895588b6011b8b6cc0eda7102193
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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>
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