8:47 a.m.
Use the new backing store parser in the backing chain crawler. This
change needs one test change where information about the NBD image are
now parsed differently.
---
src/storage/storage_driver.c | 90 +-------------------------------------------
tests/virstoragetest.c | 14 ++++---
2 files changed, 9 insertions(+), 95 deletions(-)
diff --git a/src/storage/storage_driver.c b/src/storage/storage_driver.c
index 67882ce..a4518cb 100644
--- a/src/storage/storage_driver.c
+++ b/src/storage/storage_driver.c
@@ -3068,56 +3068,6 @@ virStorageFileAccess(virStorageSourcePtr src,
}
-/**
- * Given a starting point START (a directory containing the original
- * file, if the original file was opened via a relative path; ignored
- * if NAME is absolute), determine the location of the backing file
- * NAME (possibly relative), and compute the relative DIRECTORY
- * (optional) and CANONICAL (mandatory) location of the backing file.
- * Return 0 on success, negative on error.
- */
-static int ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(4)
-virFindBackingFile(const char *start, const char *path,
- char **directory, char **canonical)
-{
- /* FIXME - when we eventually allow non-raw network devices, we
- * must ensure that we handle backing files the same way as qemu.
- * For a qcow2 top file of gluster://server/vol/img, qemu treats
- * the relative backing file 'rel' as meaning
- * 'gluster://server/vol/rel', while the backing file '/abs' is
- * used as a local file. But we cannot canonicalize network
- * devices via canonicalize_file_name(), because they are not part
- * of the local file system. */
- char *combined = NULL;
- int ret = -1;
-
- if (*path == '/') {
- /* Safe to cast away const */
- combined = (char *)path;
- } else if (virAsprintf(&combined, "%s/%s", start, path) < 0) {
- goto cleanup;
- }
-
- if (directory && !(*directory = mdir_name(combined))) {
- virReportOOMError();
- goto cleanup;
- }
-
- if (!(*canonical = canonicalize_file_name(combined))) {
- virReportSystemError(errno,
- _("Can't canonicalize path '%s'"),
path);
- goto cleanup;
- }
-
- ret = 0;
-
- cleanup:
- if (combined != path)
- VIR_FREE(combined);
- return ret;
-}
-
-
/* Recursive workhorse for virStorageFileGetMetadata. */
static int
virStorageFileGetMetadataRecurse(virStorageSourcePtr src,
@@ -3126,7 +3076,6 @@ virStorageFileGetMetadataRecurse(virStorageSourcePtr src,
virHashTablePtr cycle)
{
int ret = -1;
- struct stat st;
const char *uniqueName;
char *buf = NULL;
ssize_t headerLen;
@@ -3178,46 +3127,9 @@ virStorageFileGetMetadataRecurse(virStorageSourcePtr src,
goto cleanup;
}
- if (VIR_ALLOC(backingStore) < 0)
+ if (!(backingStore = virStorageSourceNewFromBacking(src)))
goto cleanup;
- if (VIR_STRDUP(backingStore->relPath, src->backingStoreRaw) < 0)
- goto cleanup;
-
- if (virStorageIsFile(src->backingStoreRaw)) {
- backingStore->type = VIR_STORAGE_TYPE_FILE;
-
- if (virFindBackingFile(src->relDir,
- src->backingStoreRaw,
- &backingStore->relDir,
- &backingStore->path) < 0) {
- /* the backing file is (currently) unavailable, treat this
- * file as standalone:
- * backingStoreRaw is kept to mark broken image chains */
- VIR_WARN("Backing file '%s' of image '%s' is
missing.",
- src->backingStoreRaw, src->path);
- ret = 0;
- goto cleanup;
- }
-
- /* update the type for local storage */
- if (stat(backingStore->path, &st) == 0) {
- if (S_ISDIR(st.st_mode)) {
- backingStore->type = VIR_STORAGE_TYPE_DIR;
- backingStore->format = VIR_STORAGE_FILE_DIR;
- } else if (S_ISBLK(st.st_mode)) {
- backingStore->type = VIR_STORAGE_TYPE_BLOCK;
- }
- }
- } else {
- /* TODO: To satisfy the test case, copy the network URI as path. This
- * will be removed later. */
- backingStore->type = VIR_STORAGE_TYPE_NETWORK;
-
- if (VIR_STRDUP(backingStore->path, src->backingStoreRaw) < 0)
- goto cleanup;
- }
-
if (backingFormat == VIR_STORAGE_FILE_AUTO && !allow_probe)
backingStore->format = VIR_STORAGE_FILE_RAW;
else if (backingFormat == VIR_STORAGE_FILE_AUTO_SAFE)
diff --git a/tests/virstoragetest.c b/tests/virstoragetest.c
index 746bf63..29297ef 100644
--- a/tests/virstoragetest.c
+++ b/tests/virstoragetest.c
@@ -730,20 +730,22 @@ mymain(void)
/* Rewrite qcow2 to use an nbd: protocol as backend */
virCommandFree(cmd);
cmd = virCommandNewArgList(qemuimg, "rebase", "-u",
"-f", "qcow2",
- "-F", "raw", "-b",
"nbd:example.org:6000",
+ "-F", "raw", "-b",
"nbd:example.org:6000:exportname=blah",
"qcow2", NULL);
if (virCommandRun(cmd, NULL) < 0)
ret = -1;
- qcow2.expBackingStore = "nbd:example.org:6000";
- qcow2.expBackingStoreRaw = "nbd:example.org:6000";
+ qcow2.expBackingStore = "blah";
+ qcow2.expBackingStoreRaw = "nbd:example.org:6000:exportname=blah";
/* Qcow2 file with backing protocol instead of file */
testFileData nbd = {
- .pathRel = "nbd:example.org:6000",
- .pathAbs = "nbd:example.org:6000",
- .path = "nbd:example.org:6000",
+ .pathRel = "nbd:example.org:6000:exportname=blah",
+ .pathAbs = "nbd:example.org:6000:exportname=blah",
+ .path = "blah",
.type = VIR_STORAGE_TYPE_NETWORK,
.format = VIR_STORAGE_FILE_RAW,
+ .relDirRel = ".",
+ .relDirAbs = ".",
};
TEST_CHAIN(11, "qcow2", absqcow2, VIR_STORAGE_FILE_QCOW2,
(&qcow2, &nbd), EXP_PASS,
--
1.9.3