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| author | Paolo Bonzini <pbonzini@redhat.com> | 2012-08-09 16:07:21 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2012-08-10 10:25:12 +0200 |
| commit | 1f212b9d3edd8679bafd3bcf0301795206438724 (patch) | |
| tree | 1a15edf9d7477d98862a3f68f3247ce60ba05e26 /blockdev.c | |
| parent | 9315cbfd8d7074eca44fbc5f93902e97b27d5240 (diff) | |
| download | qemu-1f212b9d3edd8679bafd3bcf0301795206438724.tar.gz qemu-1f212b9d3edd8679bafd3bcf0301795206438724.tar.bz2 qemu-1f212b9d3edd8679bafd3bcf0301795206438724.zip | |
blockdev: flip default cache mode from writethrough to writeback
Now all major device models (IDE, SCSI, virtio) can choose between
writethrough and writeback at run-time, and virtio will even revert
to writethrough if the guest is not capable of sending flushes. So
we can change the default to writeback at last.
Tested, for lack of a better idea, with a breakpoint on bdrv_open
and all cache choices one by one.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'blockdev.c')
| -rw-r--r-- | blockdev.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/blockdev.c b/blockdev.c index 8669142704..7c83baa353 100644 --- a/blockdev.c +++ b/blockdev.c @@ -377,6 +377,7 @@ DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi) } } + bdrv_flags |= BDRV_O_CACHE_WB; if ((buf = qemu_opt_get(opts, "cache")) != NULL) { if (bdrv_parse_cache_flags(buf, &bdrv_flags) != 0) { error_report("invalid cache option"); |