From f68ec8379e88502b4841a110c070e9b118d3151c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andreas=20F=C3=A4rber?= Date: Wed, 5 Jun 2013 15:17:57 +0200 Subject: ide: Set BSY bit during FLUSH MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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) Signed-off-by: Andreas Färber Signed-off-by: Kevin Wolf Signed-off-by: Stefan Hajnoczi --- hw/ide/core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/ide/core.c b/hw/ide/core.c index c7a80413be..9926d9202b 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); } -- cgit v1.2.1