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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> |
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| .. | ||
| ahci.c | ||
| ahci.h | ||
| atapi.c | ||
| cmd646.c | ||
| core.c | ||
| ich.c | ||
| internal.h | ||
| isa.c | ||
| macio.c | ||
| Makefile.objs | ||
| microdrive.c | ||
| mmio.c | ||
| pci.c | ||
| pci.h | ||
| piix.c | ||
| qdev.c | ||
| via.c | ||