Commit Graph

10 Commits

Author SHA1 Message Date
Peter Maydell d38ea87ac5 all: Clean up includes
Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1454089805-5470-16-git-send-email-peter.maydell@linaro.org
2016-02-04 17:41:30 +00:00
Max Reitz 741cc43133 nbd: Switch from close to eject notifier
The NBD code uses the BDS close notifier to determine when a medium is
ejected. However, now it should use the BB's BDS removal notifier for
that instead of the BDS's close notifier.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-02 17:50:46 +01:00
Max Reitz d3780c2dce nbd: client_close on error in nbd_co_client_start
Use client_close() if an error in nbd_co_client_start() occurs instead
of manually inlining parts of it. This fixes an assertion error on the
server side if nbd_negotiate() fails.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-02 17:49:42 +01:00
Peter Maydell ba3fb2f023 * chardev support for TLS and leak fix
* NBD fix from Denis
 * condvar fix from Dave
 * kvm_stat and dump-guest-memory almost rewrite
 * mem-prealloc fix from Luiz
 * manpage style improvement
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* chardev support for TLS and leak fix
* NBD fix from Denis
* condvar fix from Dave
* kvm_stat and dump-guest-memory almost rewrite
* mem-prealloc fix from Luiz
* manpage style improvement

# gpg: Signature made Tue 26 Jan 2016 14:58:18 GMT using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"

* remotes/bonzini/tags/for-upstream: (49 commits)
  scripts/dump-guest-memory.py: Fix module docstring
  scripts/dump-guest-memory.py: Introduce multi-arch support
  scripts/dump-guest-memory.py: Cleanup functions
  scripts/dump-guest-memory.py: Improve python 3 compatibility
  scripts/dump-guest-memory.py: Make methods functions
  scripts/dump-guest-memory.py: Move constants to the top
  nbd: add missed aio_context_acquire in nbd_export_new
  memory: exit when hugepage allocation fails if mem-prealloc
  cpus: use broadcast on qemu_pause_cond
  scripts/kvm/kvm_stat: Add optparse description
  scripts/kvm/kvm_stat: Add interactive filtering
  scripts/kvm/kvm_stat: Fixup filtering
  scripts/kvm/kvm_stat: Fix rlimit for unprivileged users
  scripts/kvm/kvm_stat: Read event values as u64
  scripts/kvm/kvm_stat: Cleanup and pre-init perf_event_attr
  scripts/kvm/kvm_stat: Fix output formatting
  scripts/kvm/kvm_stat: Make tui function a class
  scripts/kvm/kvm_stat: Remove unneeded X86_EXIT_REASONS
  scripts/kvm/kvm_stat: Group arch specific data
  scripts/kvm/kvm_stat: Cleanup of Event class
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-01-26 15:09:13 +00:00
Denis V. Lunev e5f3e12e84 nbd: add missed aio_context_acquire in nbd_export_new
blk_invalidate_cache() can call qcow2_invalidate_cache which performs
IO inside.

Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1453273940-15382-3-git-send-email-den@openvz.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-26 15:58:14 +01:00
Kevin Wolf 04c01a5c8f block: Rename BDRV_O_INCOMING to BDRV_O_INACTIVE
Instead of covering only the state of images on the migration
destination before the migration is completed, the flag will also cover
the state of images on the migration source after completion. This
common state implies that the image is technically still open, but no
writes will happen and any cached contents will be reloaded from disk if
and when the image leaves this state.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2016-01-20 13:36:23 +01:00
Paolo Bonzini f1c17521e7 nbd-server: do not exit on failed memory allocation
The amount of memory allocated in nbd_co_receive_request is driven by the
NBD client (possibly a virtual machine).  Parallel I/O can cause the
server to allocate a large amount of memory; check for failures and
return ENOMEM in that case.

Cc: qemu-block@nongnu.org
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-15 18:58:02 +01:00
Paolo Bonzini eb38c3b670 nbd-server: do not check request length except for reads and writes
Only reads and writes need to allocate memory correspondent to the
request length.  Other requests can be sent to the storage without
allocating any memory, and thus any request length is acceptable.

Reported-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Cc: qemu-block@nongnu.org
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-15 18:58:02 +01:00
Fam Zheng 1a6245a5b0 nbd-server: Coroutine based negotiation
Create a coroutine in nbd_client_new, so that nbd_send_negotiate doesn't
need qemu_set_block().

Handlers need to be set temporarily for csock fd in case the coroutine
yields during I/O.

With this, if the other end disappears in the middle of the negotiation,
we don't block the whole event loop.

To make the code clearer, unify all function names that belong to
negotiate, so they are less likely to be misused. This is important
because we rely on negotiation staying in main loop, as commented in
nbd_negotiate_read/write().

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <1452760863-25350-4-git-send-email-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-15 18:58:02 +01:00
Fam Zheng 798bfe0006 nbd: Split nbd.c
We have NBD server code and client code, all mixed in a file. Now split
them into separate files under nbd/, and update MAINTAINERS.

filter_nbd for iotest 083 is updated to keep the log filtered out.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <1452760863-25350-3-git-send-email-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-01-15 18:58:02 +01:00