From 5d93906d3a51691be4c0d3cf29d4650f090cc0e1 Mon Sep 17 00:00:00 2001 Message-Id: <5d93906d3a51691be4c0d3cf29d4650f090cc0e1@dist-git> From: John Ferlan Date: Tue, 12 Mar 2019 13:55:57 -0400 Subject: [PATCH] storage: Rework virStorageBackendSCSISerial MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit https://bugzilla.redhat.com/show_bug.cgi?id=1687715 (7.6.z) https://bugzilla.redhat.com/show_bug.cgi?id=1657468 (7.7.0) Alter the code to use the virStorageFileGetSCSIKey helper to fetch the unique key for the SCSI disk. Alter the logic to follow the former code which would return a duplicate of @dev when either the virCommandRun succeeded, but returned an empty string or when WITH_UDEV was not true. Signed-off-by: John Ferlan ACKed-by: Michal Privoznik Reviewed-by: Ján Tomko (cherry picked from commit 8bf89dc83729aaa0388f89e972a4847fd1e267c6) Managed conflict in src/locking/lock_driver_lockd.c as a result of commit e9e904b3b70533982954ab39ccb81122e8dad338 which changed from using "goto error" to using "goto cleanup" by using the error label. Signed-off-by: John Ferlan Message-Id: <20190312175559.13583-3-jferlan@redhat.com> Reviewed-by: Ján Tomko --- src/locking/lock_driver_lockd.c | 2 +- src/storage/storage_util.c | 33 +++++++-------------------------- src/util/virstoragefile.c | 10 +++++++--- src/util/virstoragefile.h | 3 ++- 4 files changed, 17 insertions(+), 31 deletions(-) diff --git a/src/locking/lock_driver_lockd.c b/src/locking/lock_driver_lockd.c index 957a963a7b..1b9341ceba 100644 --- a/src/locking/lock_driver_lockd.c +++ b/src/locking/lock_driver_lockd.c @@ -517,7 +517,7 @@ static int virLockManagerLockDaemonAddResource(virLockManagerPtr lock, if (STRPREFIX(name, "/dev") && driver->scsiLockSpaceDir) { VIR_DEBUG("Trying to find an SCSI ID for %s", name); - if (virStorageFileGetSCSIKey(name, &newName) < 0) + if (virStorageFileGetSCSIKey(name, &newName, false) < 0) goto error; if (newName) { diff --git a/src/storage/storage_util.c b/src/storage/storage_util.c index 5dc22d3182..d1659c0c8d 100644 --- a/src/storage/storage_util.c +++ b/src/storage/storage_util.c @@ -3696,36 +3696,17 @@ virStorageBackendRefreshLocal(virStoragePoolObjPtr pool) static char * virStorageBackendSCSISerial(const char *dev) { + int rc; char *serial = NULL; -#ifdef WITH_UDEV - virCommandPtr cmd = virCommandNewArgList( - "/lib/udev/scsi_id", - "--replace-whitespace", - "--whitelisted", - "--device", dev, - NULL - ); - /* Run the program and capture its output */ - virCommandSetOutputBuffer(cmd, &serial); - if (virCommandRun(cmd, NULL) < 0) - goto cleanup; -#endif + rc = virStorageFileGetSCSIKey(dev, &serial, true); + if (rc == 0 && serial) + return serial; - if (serial && STRNEQ(serial, "")) { - char *nl = strchr(serial, '\n'); - if (nl) - *nl = '\0'; - } else { - VIR_FREE(serial); - ignore_value(VIR_STRDUP(serial, dev)); - } - -#ifdef WITH_UDEV - cleanup: - virCommandFree(cmd); -#endif + if (rc == -2) + return NULL; + ignore_value(VIR_STRDUP(serial, dev)); return serial; } diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c index ed7266619d..56d38b467e 100644 --- a/src/util/virstoragefile.c +++ b/src/util/virstoragefile.c @@ -1438,6 +1438,7 @@ int virStorageFileGetLVMKey(const char *path, /* virStorageFileGetSCSIKey * @path: Path to the SCSI device * @key: Unique key to be returned + * @ignoreError: Used to not report ENOSYS * * Using a udev specific function, query the @path to get and return a * unique @key for the caller to use. @@ -1450,7 +1451,8 @@ int virStorageFileGetLVMKey(const char *path, */ int virStorageFileGetSCSIKey(const char *path, - char **key) + char **key, + bool ignoreError ATTRIBUTE_UNUSED) { int status; virCommandPtr cmd = virCommandNewArgList( @@ -1491,9 +1493,11 @@ virStorageFileGetSCSIKey(const char *path, } #else int virStorageFileGetSCSIKey(const char *path, - char **key ATTRIBUTE_UNUSED) + char **key ATTRIBUTE_UNUSED, + bool ignoreError) { - virReportSystemError(ENOSYS, _("Unable to get SCSI key for %s"), path); + if (!ignoreError) + virReportSystemError(ENOSYS, _("Unable to get SCSI key for %s"), path); return -1; } #endif diff --git a/src/util/virstoragefile.h b/src/util/virstoragefile.h index 991098e6c6..bbb0b8b3c1 100644 --- a/src/util/virstoragefile.h +++ b/src/util/virstoragefile.h @@ -384,7 +384,8 @@ bool virStorageIsRelative(const char *backing); int virStorageFileGetLVMKey(const char *path, char **key); int virStorageFileGetSCSIKey(const char *path, - char **key); + char **key, + bool ignoreError); void virStorageAuthDefFree(virStorageAuthDefPtr def); virStorageAuthDefPtr virStorageAuthDefCopy(const virStorageAuthDef *src); -- 2.21.0