OpenE2K/qemu-e2k
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341e0b5658
qemu-e2k/block
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Stefan Hajnoczi 341e0b5658 throttle-groups: forget timer and schedule next TGM on detach 
tg->any_timer_armed[] must be cleared when detaching pending timers from
the AioContext.  Failure to do so leads to hung I/O because it looks
like there are still timers pending when in fact they have been removed.

Other ThrottleGroupMembers might have requests pending too so it's
necessary to schedule the next TGM so it can set a timer.

This patch fixes hung I/O when QEMU is launched with drives that are in
the same throttling group:

  (guest)$ dd if=/dev/zero of=/dev/vdb oflag=direct bs=512 &
  (guest)$ dd if=/dev/zero of=/dev/vdc oflag=direct bs=512 &
  (qemu) stop
  (qemu) cont
  ...I/O is stuck...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20171116112150.27607-1-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-11-16 14:12:57 +00:00
..
accounting.c
backup.c dirty-bitmap: Change bdrv_dirty_iter_next() to report byte offset 2017-10-06 16:28:58 +02:00
blkdebug.c block: Align block status requests 2017-10-26 14:45:57 +02:00
blkreplay.c
blkverify.c
block-backend.c block: Leave valid throttle timers when removing a BDS from a backend 2017-11-13 15:43:49 +00:00
bochs.c
cloop.c
commit.c commit: Remove overlay_bs 2017-10-06 16:28:58 +02:00
crypto.c block: support passthrough of BDRV_REQ_FUA in crypto driver 2017-10-06 16:30:47 +02:00
crypto.h
curl.c
dirty-bitmap.c dirty-bitmap: Convert internal hbitmap size/granularity 2017-10-06 16:28:58 +02:00
dmg-bz2.c
dmg.c
dmg.h
file-posix.c file-posix: Clear out first sector in hdev_create 2017-09-26 14:46:23 +02:00
file-win32.c qapi: Change data type of the FOO_lookup generated for enum FOO 2017-09-04 13:09:13 +02:00
gluster.c qapi: Change data type of the FOO_lookup generated for enum FOO 2017-09-04 13:09:13 +02:00
io.c block: Reduce bdrv_aligned_preadv() rounding 2017-10-26 14:45:57 +02:00
iscsi-opts.c
iscsi.c scsi: move block/scsi.h to include/scsi/constants.h 2017-09-19 14:09:31 +02:00
linux-aio.c
Makefile.objs block: add throttle block filter driver 2017-09-06 10:12:02 +02:00
mirror.c block: Convert bdrv_get_block_status_above() to bytes 2017-10-26 14:45:57 +02:00
nbd-client.c nbd-client: Stricter enforcing of structured reply spec 2017-11-09 10:22:26 -06:00
nbd-client.h nbd: Minimal structured read for client 2017-10-30 21:48:41 +01:00
nbd.c
nfs.c qapi: Mechanically convert FOO_lookup[...] to FOO_str(...) 2017-09-04 13:09:13 +02:00
null.c
parallels.c block/parallels: add migration blocker 2017-11-14 18:06:26 +01:00
qapi.c block: move ThrottleGroup membership to ThrottleGroupMember 2017-09-05 16:47:51 +02:00
qcow2-bitmap.c qcow2: Switch store_bitmap_data() to byte-based iteration 2017-10-06 16:28:58 +02:00
qcow2-cache.c qcow2: add qcow2_cache_discard 2017-09-26 15:00:32 +02:00
qcow2-cluster.c qcow2: Prevent allocating L2 tables at offset 0 2017-11-14 18:06:25 +01:00
qcow2-refcount.c qcow2: Prevent allocating compressed clusters at offset 0 2017-11-14 18:06:25 +01:00
qcow2-snapshot.c
qcow2.c qcow2: Assert that the crypto header does not overlap other metadata 2017-11-14 18:06:25 +01:00
qcow2.h qcow2: truncate the tail of the image file after shrinking the image 2017-10-06 16:30:48 +02:00
qcow.c block: convert qcrypto_block_encrypt|decrypt to take bytes offset 2017-10-06 16:30:47 +02:00
qed-check.c
qed-cluster.c
qed-l2-cache.c
qed-table.c
qed.c block: rename bdrv_co_drain to bdrv_co_drain_begin 2017-10-13 12:38:41 +01:00
qed.h
quorum.c qapi: Change data type of the FOO_lookup generated for enum FOO 2017-09-04 13:09:13 +02:00
raw-format.c block: remove unused bdrv_media_changed 2017-09-04 18:31:13 +02:00
rbd.c qapi: Mechanically convert FOO_lookup[...] to FOO_str(...) 2017-09-04 13:09:13 +02:00
replication.c block: Add reopen_queue to bdrv_child_perm() 2017-09-26 14:46:23 +02:00
sheepdog.c Merge QEMU I/O 2017/09/05 v2 2017-09-05 14:14:33 +01:00
snapshot.c block/snapshot: dirty all dirty bitmaps on snapshot-switch 2017-11-14 18:06:25 +01:00
ssh.c util: remove the obsolete non-blocking connect 2017-09-05 13:21:58 +01:00
stream.c
throttle-groups.c throttle-groups: forget timer and schedule next TGM on detach 2017-11-16 14:12:57 +00:00
throttle.c block/throttle.c: add bdrv_co_drain_begin/end callbacks 2017-10-13 12:38:41 +01:00
trace-events block: Make bdrv_round_to_clusters() signature more useful 2017-10-26 14:45:57 +02:00
vdi.c
vhdx-endian.c
vhdx-log.c
vhdx.c block/vhdx.c: Don't blindly update the header 2017-11-14 18:06:25 +01:00
vhdx.h
vmdk.c
vpc.c
vvfat.c block: Add reopen_queue to bdrv_child_perm() 2017-09-26 14:46:23 +02:00
vxhs.c
win32-aio.c
write-threshold.c