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| author | Andreas Färber <afaerber@suse.de> | 2013-06-05 15:17:57 +0200 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2013-06-06 11:27:27 +0200 |
| commit | f68ec8379e88502b4841a110c070e9b118d3151c (patch) | |
| tree | 601030fb6c187870463d315b13228c5bab64bdac /hw/ide | |
| parent | c27d565604038c1572b16dd1cd06e277e6ef02e2 (diff) | |
| download | qemu-f68ec8379e88502b4841a110c070e9b118d3151c.zip qemu-f68ec8379e88502b4841a110c070e9b118d3151c.tar.gz qemu-f68ec8379e88502b4841a110c070e9b118d3151c.tar.bz2 | |
ide: Set BSY bit during FLUSH
The implementation of the ATA FLUSH command invokes a flush at the block
layer, which may on raw files on POSIX entail a synchronous fdatasync().
This may in some cases take so long that the SLES 11 SP1 guest driver
reports I/O errors and filesystems get corrupted or remounted read-only.
Avoid this by setting BUSY_STAT, so that the guest is made aware we are
in the middle of an operation and no ATA commands are attempted to be
processed concurrently.
Addresses BNC#637297.
Suggested-by: Gonglei (Arei) <arei.gonglei@huawei.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'hw/ide')
| -rw-r--r-- | hw/ide/core.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/ide/core.c b/hw/ide/core.c index c7a8041..9926d92 100644 --- a/hw/ide/core.c +++ b/hw/ide/core.c @@ -814,6 +814,7 @@ void ide_flush_cache(IDEState *s) return; } + s->status |= BUSY_STAT; bdrv_acct_start(s->bs, &s->acct, 0, BDRV_ACCT_FLUSH); bdrv_aio_flush(s->bs, ide_flush_cb, s); } |