| diff --git a/src/trace.c b/src/trace.c |
| index bb4d696..16e7b53 100644 |
| --- a/src/trace.c |
| +++ b/src/trace.c |
| @@ -665,8 +665,16 @@ trace_file (const void *parent, |
| * obviously won't work for virtual devices and the like, so |
| * default to TRUE for now. |
| */ |
| - filename = NIH_MUST (nih_sprintf (NULL, "/sys/dev/block/%d:0/queue/rotational", |
| - major (dev))); |
| + filename = NIH_MUST (nih_sprintf (NULL, "/sys/dev/block/%d:%d/queue/rotational", |
| + major (dev), minor (dev))); |
| + if (access (filename, R_OK) < 0) { |
| + /* For devices managed by the scsi stack, the minor device number has to be |
| + * masked to find the queue/rotational file. |
| + */ |
| + nih_free (filename); |
| + filename = NIH_MUST (nih_sprintf (NULL, "/sys/dev/block/%d:%d/queue/rotational", |
| + major (dev), minor (dev) & 0xffff0)); |
| + } |
| |
| if (get_value (AT_FDCWD, filename, &rotational) < 0) { |
| NihError *err; |
