Neil Brown [neilb@xxxxxxx] wrote: > try blockdev --flushbufs > on the device before reading it. > Or issue the ioctl yourself. This should help. > Or use O_DIRECT to read. Can this help? He is reading from logical volume lv1 but the page cache exists for linear device fred01. Thanks, Malahal. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel