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storage: Flush host cache after write

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Although we are flushing cache after some critical writes (e.g.
volume creation), after some others we do not (e.g. volume cloning).
This patch fix this issue. That is for volume cloning, writing
header of logical volume, and storage wipe.
This commit is contained in:
Michal Privoznik 2011-08-18 14:40:03 +02:00
parent 74c7567133
commit b32f8b1989
3 changed files with 23 additions and 0 deletions
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8
src/storage/storage_backend.c
View File

@ -208,6 +208,14 @@ virStorageBackendCopyToFD(virStorageVolDefPtr vol,
} while ((amtleft -= interval) > 0);
}
if (fdatasync(fd) < 0) {
ret = -errno;
virReportSystemError(errno, _("cannot sync data to file '%s'"),
vol->target.path);
goto cleanup;
}
if (VIR_CLOSE(inputfd) < 0) {
ret = -errno;
virReportSystemError(errno,

7
src/storage/storage_backend_logical.c
View File

@ -424,6 +424,13 @@ virStorageBackendLogicalBuildPool(virConnectPtr conn ATTRIBUTE_UNUSED,
VIR_FORCE_CLOSE(fd);
goto cleanup;
}
if (fsync(fd) < 0) {
virReportSystemError(errno,
_("cannot flush header of device'%s'"),
pool->def->source.devices[i].path);
VIR_FORCE_CLOSE(fd);
goto cleanup;
}
if (VIR_CLOSE(fd) < 0) {
virReportSystemError(errno,
_("cannot close device '%s'"),

8
src/storage/storage_driver.c
View File

@ -1777,6 +1777,14 @@ storageWipeExtent(virStorageVolDefPtr vol,
remaining -= written;
}
if (fdatasync(fd) < 0) {
ret = -errno;
virReportSystemError(errno,
_("cannot sync data to volume with path '%s'"),
vol->target.path);
goto out;
}
VIR_DEBUG("Wrote %zu bytes to volume with path '%s'",
*bytes_wiped, vol->target.path);