[libvirt] [PATCH v3 6/6] storage: Ignore block devices that fail format detection

https://bugzilla.redhat.com/show_bug.cgi?id=1276198 Prior to commit id '98322052' failure to saferead the block device would cause an error to be logged and the device to be skipped while attempting to discover/create a stable target path for a new LUN (NPIV). This was because virStorageBackendSCSIFindLUs ignored errors from processLU and virStorageBackendSCSINewLun. Ignoring the failure allowed a multipath device with an "active" and "ghost" to be present on the host with the "ghost" block device being ignored. This patch will return a -2 to the caller indicating the desire to ignore the block device since it cannot be used directly rather than fail the pool startup. Signed-off-by: John Ferlan <jferlan(a)redhat.com&gt; --- src/storage/storage_backend_scsi.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/src/storage/storage_backend_scsi.c b/src/storage/storage_backend_scsi.c index cc2c5d7..670cc4d 100644 --- a/src/storage/storage_backend_scsi.c +++ b/src/storage/storage_backend_scsi.c @@ -224,8 +224,10 @@ virStorageBackendSCSINewLun(virStoragePoolObjPtr pool, goto cleanup; } - if (virStorageBackendUpdateVolInfo(vol, true, - VIR_STORAGE_VOL_OPEN_DEFAULT, 0) < 0) + /* Allow a volume read failure to ignore or skip this block file */ + if ((retval = virStorageBackendUpdateVolInfo(vol, true, + VIR_STORAGE_VOL_OPEN_DEFAULT, + VIR_STORAGE_VOL_READ_NOERROR)) < 0) goto cleanup; if (!(vol->key = virStorageBackendSCSISerial(vol->target.path))) -- 2.5.0