On 2010-07-08, at 06:21, Neil Brown wrote: > On Thu, 08 Jul 2010 16:10:09 +0530 > "Aneesh Kumar K. V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx> wrote: >> How about adding mnt_id to the handle ? Documentation file says it is unique >> >> (1) mount ID: unique identifier of the mount (may be reused after umount) But this value is not persistent across a reboot, or even an umount/mount so it is not useful as an identifier. I suppose one way to resolve this issue is to just allow the underlying filesystem to supply a completely opaque filehandle to userspace. For local filesystems that don't care about persistence or uniqueness between nodes they can use something like mount_id, and for distributed/clustered filesystems they can include a globally-unique identifier. Cheers, Andreas -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
