diff options
| author | Karel Zak | 2017-07-12 14:35:53 +0200 |
|---|---|---|
| committer | Karel Zak | 2017-07-12 14:35:53 +0200 |
| commit | 884659b32a8c632658e00700264570fb027a44d9 (patch) | |
| tree | f6e4609617ae2a2d0c2bb29117105c50166c0d58 /libblkid/src/probe.c | |
| parent | tests: don't use errno in output (diff) | |
| download | kernel-qcow2-util-linux-884659b32a8c632658e00700264570fb027a44d9.tar.gz kernel-qcow2-util-linux-884659b32a8c632658e00700264570fb027a44d9.tar.xz kernel-qcow2-util-linux-884659b32a8c632658e00700264570fb027a44d9.zip | |
libblkid: don't use CDROM_GET_CAPABILITY ioctl for DM devices
For some reason kernel commit e980f62353c697cbf0c4325e43df6e44399aeb64
add extra warning when the ioctl is used for DM devices. It seems we
can avoid this ioctl when the device has dm/uuid.
Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=1469532
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'libblkid/src/probe.c')
| -rw-r--r-- | libblkid/src/probe.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/libblkid/src/probe.c b/libblkid/src/probe.c index 9f56f528f..21cd790e9 100644 --- a/libblkid/src/probe.c +++ b/libblkid/src/probe.c @@ -862,6 +862,7 @@ int blkid_probe_set_device(blkid_probe pr, int fd, { struct stat sb; uint64_t devsiz = 0; + char *dm_uuid = NULL; blkid_reset_probe(pr); blkid_probe_reset_buffers(pr); @@ -925,7 +926,8 @@ int blkid_probe_set_device(blkid_probe pr, int fd, if (pr->size <= 1440 * 1024 && !S_ISCHR(sb.st_mode)) pr->flags |= BLKID_FL_TINY_DEV; - if (S_ISBLK(sb.st_mode) && sysfs_devno_is_lvm_private(sb.st_rdev)) { + if (S_ISBLK(sb.st_mode) && + sysfs_devno_is_lvm_private(sb.st_rdev, &dm_uuid)) { DBG(LOWPROBE, ul_debug("ignore private LVM device")); pr->flags |= BLKID_FL_NOSCAN_DEV; } @@ -933,6 +935,7 @@ int blkid_probe_set_device(blkid_probe pr, int fd, #ifdef CDROM_GET_CAPABILITY else if (S_ISBLK(sb.st_mode) && !blkid_probe_is_tiny(pr) && + !dm_uuid && blkid_probe_is_wholedisk(pr) && ioctl(fd, CDROM_GET_CAPABILITY, NULL) >= 0) { @@ -940,6 +943,7 @@ int blkid_probe_set_device(blkid_probe pr, int fd, cdrom_size_correction(pr); } #endif + free(dm_uuid); DBG(LOWPROBE, ul_debug("ready for low-probing, offset=%"PRIu64", size=%"PRIu64"", pr->off, pr->size)); |