Do we include Samba in this? (I use Samba to host some PVCS archives and haven't seen any archive corruption. All access is "local" because I'm using the peer-to-peer PVCS stuff, not server stuff.)The latter, the sharing part, is where the real trouble begins. Ensuring reliable order of operations for various operations which would be "atomic" on a local filesystem is very very difficult (literally impossible in some cases) for shared network filesystems.
Is Ethernet then unreliable? Isn't the data integrity handled at the physical layer, with CRC's?Also of course there are potential data integrity issues with networked filesystems. The integrity checks in UDP are really quite lame. The integrity checks in TCP are not even all that great. Meanwhile SCSI parity checks are more reliable and the nature of how hardware errors can occur in something like a SCSI interface make those parity checks more likely to detect all errors.
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