Scott Long <scottl_at_freebsd.org> writes: > On Mon, 26 Jul 2004, Brian Fundakowski Feldman wrote: >> SoftUpdates guarantess that your file systems will not get corrupt. > This isn't entirely correct. Softupdates guarantees that you won't get > corruption due to metadata pointing to invalid or stale data blocks. > That's not the same as guaranteeing that there won't be any corruption. > Write caching on the drive combined with an in-opportune power loss or > other failure can easily leave you with corrupt or incomplete metadata > and/or data blocks. I've had a SCS HDD lock up (1997 Micropolis 4345WS showing its age and bad interaction with an Adaptec 2940UW Pro[*]) while softdep was writing to the drive and suffered *SEVERE* file system corruption, which tore down my /var/db/pkg and other stuff. [*] The same adaptor used to lock up every other week in a different hardware environment. I haven't seen this kind of trouble with the Tekram DC-390U I used to use, but I was too lazy to replace the Tekram until now. -- Matthias Andree Encrypted mail welcome: my GnuPG key ID is 0x052E7D95 (PGP/MIME preferred)Received on Mon Jul 26 2004 - 20:35:06 UTC
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