-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 David Brown wrote: > Of course, any of the re-ordering (SCSI TCQ, or SATA NCQ) requires > filesystem and driver support of write barriers for reliability. > Write barriers are not implement in DM, hence LVM, so there is a Only the dm-mpath and dm-snap targets treat barrier bios specially (they return EOPNOTSUPP). Other dm targets pass the barriers on to the underlying devices unchanged. Regards, Bryn. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iD8DBQFGSB4y6YSQoMYUY94RApajAJ4kyrw+DDEjj3WiXPOysO5J6KKmOQCgxC0M oQrw2KA74j+ytiKFoMLPQdg= =CZvy -----END PGP SIGNATURE----- _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
