On recent Debian, /etc/blkid.tab is now a symlink to /dev/.blkid.tab.
Rather than chasing the cache file around (it may move to /run in future)
use the -c /dev/null option to stop blkid from reading the cache.
(cherry picked from commit
1d0f398d8e3c74ce6a70cbbb8d9b8ae07c6d7ef6)
- /* Kill the cache file, forcing blkid to reread values from the
- * original filesystems. In blkid there is a '-p' option which is
- * supposed to do this, but (a) it doesn't work and (b) that option
- * is not supported in RHEL 5.
- */
- unlink ("/etc/blkid/blkid.tab"); /* Red Hat, Fedora */
- unlink ("/etc/blkid.tab"); /* Debian */
-
r = commandr (&out, &err,
r = commandr (&out, &err,
- "blkid", "-o", "value", "-s", tag, device, NULL);
+ "blkid",
+ /* Adding -c option kills all caching, even on RHEL 5. */
+ "-c", "/dev/null",
+ "-o", "value", "-s", tag, device, NULL);
if (r != 0 && r != 2) {
if (r >= 0)
reply_with_error ("%s: %s (blkid returned %d)", device, err, r);
if (r != 0 && r != 2) {
if (r >= 0)
reply_with_error ("%s: %s (blkid returned %d)", device, err, r);