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qemu-patch-raspberry4
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block: ignore flush requests when storage is clean 

Some guests (win2008 server for example) do a lot of unnecessary
flushing when underlying media has not changed. This adds additional
overhead on host when calling fsync/fdatasync.

This change introduces a write generation scheme in BlockDriverState.
Current write generation is checked against last flushed generation to
avoid unnessesary flushes.

The problem with excessive flushing was found by a performance test
which does parallel directory tree creation (from 2 processes).
Results improved from 0.424 loops/sec to 0.432 loops/sec.
Each loop creates 10^3 directories with 10 files in each.

This affected some blkdebug testcases that were expecting error logs from
failure-injected flushes which are now skipped entirely
(tests 026 071 089).

This also affects the performance of block jobs and thus BLOCK_JOB_READY
events for driver-mirror and active block-commit commands now arrives
faster, before QMP send successfully returns to caller (tests 141 144).

Signed-off-by: Evgeny Yakovlev <eyakovlev@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1468870792-7411-5-git-send-email-den@openvz.org
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Fam Zheng <famz@redhat.com>
CC: John Snow <jsnow@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
stable-2.7
Evgeny Yakovlev 2016-07-18 22:39:52 +03:00 committed by John Snow
parent 2dd7e10d7c
commit 3ff2f67a7c
9 changed files with 32 additions and 113 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
block.c
View File

@ -234,6 +234,8 @@ BlockDriverState *bdrv_new(void)
bs->refcnt = 1;
bs->aio_context = qemu_get_aio_context();
qemu_co_queue_init(&bs->flush_queue);
QTAILQ_INSERT_TAIL(&all_bdrv_states, bs, bs_list);
return bs;
@ -2472,6 +2474,7 @@ int bdrv_truncate(BlockDriverState *bs, int64_t offset)
ret = refresh_total_sectors(bs, offset >> BDRV_SECTOR_BITS);
bdrv_dirty_bitmap_truncate(bs);
bdrv_parent_cb_resize(bs);
++bs->write_gen;
}
return ret;
}

21
block/io.c
View File

@ -1303,6 +1303,7 @@ static int coroutine_fn bdrv_aligned_pwritev(BlockDriverState *bs,
}
bdrv_debug_event(bs, BLKDBG_PWRITEV_DONE);
++bs->write_gen;
bdrv_set_dirty(bs, start_sector, end_sector - start_sector);
if (bs->wr_highest_offset < offset + bytes) {
@ -2236,6 +2237,15 @@ int coroutine_fn bdrv_co_flush(BlockDriverState *bs)
tracked_request_begin(&req, bs, 0, 0, BDRV_TRACKED_FLUSH);
int current_gen = bs->write_gen;
/* Wait until any previous flushes are completed */
while (bs->flush_started_gen != bs->flushed_gen) {
qemu_co_queue_wait(&bs->flush_queue);
}
bs->flush_started_gen = current_gen;
/* Write back all layers by calling one driver function */
if (bs->drv->bdrv_co_flush) {
ret = bs->drv->bdrv_co_flush(bs);
@ -2256,6 +2266,11 @@ int coroutine_fn bdrv_co_flush(BlockDriverState *bs)
goto flush_parent;
}
/* Check if we really need to flush anything */
if (bs->flushed_gen == current_gen) {
goto flush_parent;
}
BLKDBG_EVENT(bs->file, BLKDBG_FLUSH_TO_DISK);
if (bs->drv->bdrv_co_flush_to_disk) {
ret = bs->drv->bdrv_co_flush_to_disk(bs);
@ -2286,6 +2301,7 @@ int coroutine_fn bdrv_co_flush(BlockDriverState *bs)
*/
ret = 0;
}
if (ret < 0) {
goto out;
}
@ -2296,6 +2312,10 @@ int coroutine_fn bdrv_co_flush(BlockDriverState *bs)
flush_parent:
ret = bs->file ? bdrv_co_flush(bs->file->bs) : 0;
out:
/* Notify any pending flushes that we have completed */
bs->flushed_gen = current_gen;
qemu_co_queue_restart_all(&bs->flush_queue);
tracked_request_end(&req);
return ret;
}
@ -2421,6 +2441,7 @@ int coroutine_fn bdrv_co_discard(BlockDriverState *bs, int64_t sector_num,
}
ret = 0;
out:
++bs->write_gen;
bdrv_set_dirty(bs, req.offset >> BDRV_SECTOR_BITS,
req.bytes >> BDRV_SECTOR_BITS);
tracked_request_end(&req);

5
include/block/block_int.h
View File

@ -439,6 +439,11 @@ struct BlockDriverState {
int copy_on_read; /* if nonzero, copy read backing sectors into image.
note this is a reference count */
CoQueue flush_queue; /* Serializing flush queue */
unsigned int write_gen; /* Current data generation */
unsigned int flush_started_gen; /* Generation for which flush has started */
unsigned int flushed_gen; /* Flushed write generation */
BlockDriver *drv; /* NULL means no media */
void *opaque;

50
tests/qemu-iotests/026.out
View File

@ -14,7 +14,6 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l1_update; errno: 5; imm: off; once: off; write
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
@ -23,7 +22,6 @@ This means waste of disk space, but no harm to data.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l1_update; errno: 5; imm: off; once: off; write -b
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
@ -42,7 +40,6 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l1_update; errno: 28; imm: off; once: off; write
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
@ -51,7 +48,6 @@ This means waste of disk space, but no harm to data.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l1_update; errno: 28; imm: off; once: off; write -b
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
@ -78,11 +74,7 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l2_load; errno: 5; imm: off; once: off; write
wrote 131072/131072 bytes at offset 0
128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
read failed: Input/output error
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
@ -90,11 +82,7 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l2_load; errno: 5; imm: off; once: off; write -b
wrote 131072/131072 bytes at offset 0
128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
read failed: Input/output error
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
@ -118,11 +106,7 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l2_load; errno: 28; imm: off; once: off; write
wrote 131072/131072 bytes at offset 0
128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
read failed: No space left on device
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
@ -130,11 +114,7 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l2_load; errno: 28; imm: off; once: off; write -b
wrote 131072/131072 bytes at offset 0
128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
read failed: No space left on device
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
@ -306,14 +286,12 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_load; errno: 5; imm: off; once: off; write
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_load; errno: 5; imm: off; once: off; write -b
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
@ -330,14 +308,12 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_load; errno: 28; imm: off; once: off; write
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_load; errno: 28; imm: off; once: off; write -b
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.
@ -354,14 +330,12 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_update_part; errno: 5; imm: off; once: off; write
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_update_part; errno: 5; imm: off; once: off; write -b
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
@ -378,14 +352,12 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_update_part; errno: 28; imm: off; once: off; write
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_update_part; errno: 28; imm: off; once: off; write -b
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.
@ -402,14 +374,12 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_alloc; errno: 5; imm: off; once: off; write
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_alloc; errno: 5; imm: off; once: off; write -b
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
@ -426,14 +396,12 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_alloc; errno: 28; imm: off; once: off; write
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_alloc; errno: 28; imm: off; once: off; write -b
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.
@ -450,15 +418,11 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: cluster_alloc; errno: 5; imm: off; once: off; write
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: cluster_alloc; errno: 5; imm: off; once: off; write -b
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
@ -474,15 +438,11 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: cluster_alloc; errno: 28; imm: off; once: off; write
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: cluster_alloc; errno: 28; imm: off; once: off; write -b
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.
@ -553,7 +513,6 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_alloc_write_blocks; errno: 28; imm: off; once: off; write
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
@ -562,7 +521,6 @@ This means waste of disk space, but no harm to data.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_alloc_write_blocks; errno: 28; imm: off; once: off; write -b
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
@ -581,7 +539,6 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_alloc_write_table; errno: 28; imm: off; once: off; write
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
@ -590,7 +547,6 @@ This means waste of disk space, but no harm to data.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_alloc_write_table; errno: 28; imm: off; once: off; write -b
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
@ -635,8 +591,6 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l1_grow_alloc_table; errno: 5; imm: off; once: off
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
@ -647,8 +601,6 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l1_grow_alloc_table; errno: 28; imm: off; once: off
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
@ -659,7 +611,6 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l1_grow_write_table; errno: 5; imm: off; once: off
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
@ -671,7 +622,6 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l1_grow_write_table; errno: 28; imm: off; once: off
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.

50
tests/qemu-iotests/026.out.nocache
View File

@ -14,7 +14,6 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l1_update; errno: 5; imm: off; once: off; write
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
@ -23,7 +22,6 @@ This means waste of disk space, but no harm to data.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l1_update; errno: 5; imm: off; once: off; write -b
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
@ -42,7 +40,6 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l1_update; errno: 28; imm: off; once: off; write
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
@ -51,7 +48,6 @@ This means waste of disk space, but no harm to data.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l1_update; errno: 28; imm: off; once: off; write -b
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
@ -78,11 +74,7 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l2_load; errno: 5; imm: off; once: off; write
wrote 131072/131072 bytes at offset 0
128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
read failed: Input/output error
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
@ -90,11 +82,7 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l2_load; errno: 5; imm: off; once: off; write -b
wrote 131072/131072 bytes at offset 0
128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
read failed: Input/output error
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
@ -118,11 +106,7 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l2_load; errno: 28; imm: off; once: off; write
wrote 131072/131072 bytes at offset 0
128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
read failed: No space left on device
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
@ -130,11 +114,7 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l2_load; errno: 28; imm: off; once: off; write -b
wrote 131072/131072 bytes at offset 0
128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
read failed: No space left on device
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
@ -314,14 +294,12 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_load; errno: 5; imm: off; once: off; write
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_load; errno: 5; imm: off; once: off; write -b
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
@ -338,14 +316,12 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_load; errno: 28; imm: off; once: off; write
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_load; errno: 28; imm: off; once: off; write -b
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.
@ -362,14 +338,12 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_update_part; errno: 5; imm: off; once: off; write
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_update_part; errno: 5; imm: off; once: off; write -b
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
@ -386,14 +360,12 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_update_part; errno: 28; imm: off; once: off; write
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_update_part; errno: 28; imm: off; once: off; write -b
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.
@ -410,14 +382,12 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_alloc; errno: 5; imm: off; once: off; write
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_alloc; errno: 5; imm: off; once: off; write -b
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
@ -434,14 +404,12 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_alloc; errno: 28; imm: off; once: off; write
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_alloc; errno: 28; imm: off; once: off; write -b
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.
@ -458,15 +426,11 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: cluster_alloc; errno: 5; imm: off; once: off; write
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: cluster_alloc; errno: 5; imm: off; once: off; write -b
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
@ -482,15 +446,11 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: cluster_alloc; errno: 28; imm: off; once: off; write
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: cluster_alloc; errno: 28; imm: off; once: off; write -b
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.
@ -561,7 +521,6 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_alloc_write_blocks; errno: 28; imm: off; once: off; write
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
@ -570,7 +529,6 @@ This means waste of disk space, but no harm to data.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_alloc_write_blocks; errno: 28; imm: off; once: off; write -b
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
@ -589,7 +547,6 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_alloc_write_table; errno: 28; imm: off; once: off; write
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
@ -598,7 +555,6 @@ This means waste of disk space, but no harm to data.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: refblock_alloc_write_table; errno: 28; imm: off; once: off; write -b
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
@ -643,8 +599,6 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l1_grow_alloc_table; errno: 5; imm: off; once: off
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
@ -655,8 +609,6 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l1_grow_alloc_table; errno: 28; imm: off; once: off
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
@ -667,7 +619,6 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l1_grow_write_table; errno: 5; imm: off; once: off
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
write failed: Input/output error
No errors were found on the image.
@ -679,7 +630,6 @@ No errors were found on the image.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
Event: l1_grow_write_table; errno: 28; imm: off; once: off
Failed to flush the L2 table cache: No space left on device
Failed to flush the refcount block cache: No space left on device
write failed: No space left on device
No errors were found on the image.

8
tests/qemu-iotests/071.out
View File

@ -30,14 +30,10 @@ blkverify: read sector_num=0 nb_sectors=1 contents mismatch in sector 0
=== Testing blkdebug through filename ===
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
read failed: Input/output error
=== Testing blkdebug through file blockref ===
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
read failed: Input/output error
=== Testing blkdebug on existing block device ===
@ -51,8 +47,6 @@ read failed: Input/output error
{"return": ""}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN"}
QEMU_PROG: Failed to flush the L2 table cache: Input/output error
QEMU_PROG: Failed to flush the refcount block cache: Input/output error
=== Testing blkverify on existing block device ===
@ -92,7 +86,5 @@ read failed: Input/output error
{"return": ""}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN"}
QEMU_PROG: Failed to flush the L2 table cache: Input/output error
QEMU_PROG: Failed to flush the refcount block cache: Input/output error
*** done

2
tests/qemu-iotests/089.out
View File

@ -24,8 +24,6 @@ read 512/512 bytes at offset 0
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
wrote 512/512 bytes at offset 229376
512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Failed to flush the L2 table cache: Input/output error
Failed to flush the refcount block cache: Input/output error
read failed: Input/output error
=== Testing qemu-img info output ===

4
tests/qemu-iotests/141.out
View File

@ -18,8 +18,8 @@ Formatting 'TEST_DIR/o.IMGFMT', fmt=IMGFMT size=1048576 backing_file=TEST_DIR/t.
{"return": {}}
Formatting 'TEST_DIR/o.IMGFMT', fmt=IMGFMT size=1048576 backing_file=TEST_DIR/t.IMGFMT backing_fmt=IMGFMT
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "drv0", "len": 0, "offset": 0, "speed": 0, "type": "mirror"}}
{"return": {}}
{"error": {"class": "GenericError", "desc": "Node 'drv0' is busy: block device is in use by block job: mirror"}}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "drv0", "len": 0, "offset": 0, "speed": 0, "type": "mirror"}}
@ -27,9 +27,9 @@ Formatting 'TEST_DIR/o.IMGFMT', fmt=IMGFMT size=1048576 backing_file=TEST_DIR/t.
=== Testing active block-commit ===
{"return": {}}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "drv0", "len": 0, "offset": 0, "speed": 0, "type": "commit"}}
{"return": {}}
{"error": {"class": "GenericError", "desc": "Node 'drv0' is busy: block device is in use by block job: commit"}}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "drv0", "len": 0, "offset": 0, "speed": 0, "type": "commit"}}

2
tests/qemu-iotests/144.out
View File

@ -12,9 +12,9 @@ Formatting 'TEST_DIR/tmp.qcow2', fmt=qcow2 size=536870912 backing_file=TEST_DIR/
=== Performing block-commit on active layer ===
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "virtio0", "len": 0, "offset": 0, "speed": 0, "type": "commit"}}
{"return": {}}
{"return": {}}
{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "virtio0", "len": 0, "offset": 0, "speed": 0, "type": "commit"}}
=== Performing Live Snapshot 2 ===