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a12a712a7d
qemu/block
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Paolo Bonzini a12a712a7d nbd-client: fix handling of hungup connections 
After the switch to reading replies in a coroutine, nothing is
reentering pending receive coroutines if the connection hangs.
Move nbd_recv_coroutines_enter_all to the reply read coroutine,
which is the place where hangups are detected.  nbd_teardown_connection
can simply wait for the reply read coroutine to detect the hangup
and clean up after itself.

This wouldn't be enough though because nbd_receive_reply returns 0
(rather than -EPIPE or similar) when reading from a hung connection.
Fix the return value check in nbd_read_reply_entry.

This fixes qemu-iotests 083.

Reported-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20170314111157.14464-1-pbonzini@redhat.com
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-03-27 16:50:36 +02:00
..
accounting.c block: Clean up includes 2016-01-20 13:36:23 +01:00
backup.c backup: React to bdrv_is_allocated() errors 2017-03-13 12:49:33 +01:00
blkdebug.c block: Request child permissions in filter drivers 2017-02-28 20:40:36 +01:00
blkreplay.c block: Request child permissions in filter drivers 2017-02-28 20:40:36 +01:00
blkverify.c block: Request child permissions in filter drivers 2017-02-28 20:40:36 +01:00
block-backend.c block-backend: add drained_begin / drained_end ops 2017-03-22 13:26:27 -04:00
bochs.c block: Request child permissions in format drivers 2017-02-28 20:40:36 +01:00
cloop.c block: Request child permissions in format drivers 2017-02-28 20:40:36 +01:00
commit.c commit: Implement .bdrv_refresh_filename 2017-03-13 12:49:33 +01:00
crypto.c block: Request child permissions in format drivers 2017-02-28 20:40:36 +01:00
curl.c curl: fix compilation on OpenBSD 2017-03-17 18:27:14 +00:00
dirty-bitmap.c block: More operations for meta dirty bitmap 2016-10-24 17:56:07 +02:00
dmg-bz2.c dmg: Move libbz2 code to dmg-bz2.so 2016-10-07 14:14:06 +02:00
dmg.c block: Request child permissions in format drivers 2017-02-28 20:40:36 +01:00
dmg.h dmg: Move libbz2 code to dmg-bz2.so 2016-10-07 14:14:06 +02:00
file-posix.c file-posix: Don't leak fd in hdev_get_max_segments 2017-03-17 12:54:06 +01:00
file-win32.c block: Rename raw-{posix,win32} to file-*.c 2017-01-09 13:30:53 +01:00
gluster.c qapi-schema: Rename SocketAddressFlat's variant tcp to inet 2017-03-07 14:53:29 +01:00
io.c block: Request block status from *file for BDRV_BLOCK_RAW 2017-03-13 12:49:33 +01:00
iscsi-opts.c block/iscsi: statically link qemu_iscsi_opts 2017-01-27 18:07:58 +01:00
iscsi.c iscsi: fix missing unlock 2017-03-03 16:41:20 +01:00
linux-aio.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
Makefile.objs block: Drop unmaintained 'archipelago' driver 2017-03-13 12:49:33 +01:00
mirror.c trace: Fix backwards mirror_yield parameters 2017-03-24 09:21:42 +00:00
nbd-client.c nbd-client: fix handling of hungup connections 2017-03-27 16:50:36 +02:00
nbd-client.h nbd: convert to use qio_channel_yield 2017-02-21 11:14:08 +00:00
nbd.c qapi: Drop unused non-strict qobject input visitor 2017-03-05 09:14:19 +01:00
nfs.c qapi: Drop unused non-strict qobject input visitor 2017-03-05 09:14:19 +01:00
null.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
parallels.c parallels: fix default options parsing 2017-03-21 10:02:36 +00:00
qapi.c block: Don't bother asserting type of output visitor's output 2017-02-22 19:52:20 +01:00
qcow2-cache.c qcow2: Remove stale comment 2016-11-25 13:51:30 +01:00
qcow2-cluster.c coroutine-lock: add mutex argument to CoQueue APIs 2017-02-21 11:39:40 +00:00
qcow2-refcount.c block: Pass BdrvChild to bdrv_truncate() 2017-02-24 16:09:23 +01:00
qcow2-snapshot.c block: Convert bdrv_pwrite(v/_sync) to BdrvChild 2016-07-05 16:46:27 +02:00
qcow2.c block: Add BDRV_O_RESIZE for blk_new_open() 2017-02-28 20:40:36 +01:00
qcow2.h qcow2: Optimize the refcount-block overlap check 2017-02-12 00:47:43 +01:00
qcow.c block: Add BDRV_O_RESIZE for blk_new_open() 2017-02-28 20:40:36 +01:00
qed-check.c qed: Use DIV_ROUND_UP 2016-06-07 18:19:24 +03:00
qed-cluster.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
qed-gencb.c block: Clean up includes 2016-01-20 13:36:23 +01:00
qed-l2-cache.c block: Clean up includes 2016-01-20 13:36:23 +01:00
qed-table.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
qed.c block: Add BDRV_O_RESIZE for blk_new_open() 2017-02-28 20:40:36 +01:00
qed.h block: explicitly acquire aiocontext in timers that need it 2017-02-21 11:14:08 +00:00
quorum.c block: Request child permissions in filter drivers 2017-02-28 20:40:36 +01:00
raw-format.c block: Request child permissions in filter drivers 2017-02-28 20:40:36 +01:00
rbd.c block/rbd: add support for 'mon_host', 'auth_supported' via QAPI 2017-03-01 22:39:25 -05:00
replication.c replication: clarify permissions 2017-03-17 12:54:06 +01:00
sheepdog.c sheepdog: Implement bdrv_parse_filename() 2017-03-07 14:53:28 +01:00
snapshot.c error: Remove NULL checks on error_propagate() calls 2016-06-20 16:38:13 +02:00
ssh.c qapi: Drop unused non-strict qobject input visitor 2017-03-05 09:14:19 +01:00
stream.c block: Add Error parameter to bdrv_set_backing_hd() 2017-02-28 20:47:51 +01:00
throttle-groups.c coroutine-lock: add mutex argument to CoQueue APIs 2017-02-21 11:39:40 +00:00
trace-events trace: clean up trace-events files 2017-01-31 17:12:15 +00:00
vdi.c block: Add BDRV_O_RESIZE for blk_new_open() 2017-02-28 20:40:36 +01:00
vhdx-endian.c vhdx: Use QEMU UUID API 2016-09-23 11:42:52 +08:00
vhdx-log.c block: Pass BdrvChild to bdrv_truncate() 2017-02-24 16:09:23 +01:00
vhdx.c block: Add BDRV_O_RESIZE for blk_new_open() 2017-02-28 20:40:36 +01:00
vhdx.h block: vhdx - update PAYLOAD_BLOCK_UNMAPPED value to match 1.00 spec 2014-12-12 15:42:22 +00:00
vmdk.c block: Add BDRV_O_RESIZE for blk_new_open() 2017-02-28 20:40:36 +01:00
vpc.c block: Add BDRV_O_RESIZE for blk_new_open() 2017-02-28 20:40:36 +01:00
vvfat.c vvfat: React to bdrv_is_allocated() errors 2017-03-13 12:49:33 +01:00
win32-aio.c block: explicitly acquire aiocontext in aio callbacks that need it 2017-02-21 11:39:39 +00:00
write-threshold.c block: use bdrv_add_before_write_notifier 2016-10-07 13:34:07 +02:00