Date: Mon, 2 May 2005 12:31:28 +0000 (UTC) From: c0ldbyte <c0ldbyte@myrealbox.com> To: Steven Hartland <killing@multiplay.co.uk> Cc: Kris Kennaway <kris@obsecurity.org> Subject: Re: 5.4-STABLE corrupting fs on shutdown -p now? Message-ID: <20050502123018.U72118@eleanor.us1.wmi.uvac.net> In-Reply-To: <001701c54ecc$921546d0$b3db87d4@multiplay.co.uk> References: <007901c54ec0$14bb3e30$b3db87d4@multiplay.co.uk> <001c01c54ec4$1f58d880$b3db87d4@multiplay.co.uk> <001701c54ecc$921546d0$b3db87d4@multiplay.co.uk>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Mon, 2 May 2005, Steven Hartland wrote: > Kris Kennaway wrote:: >>> Surely thats what the buffer sync is doing. Watching the console both >>> these actions appear to be doing identical things but the end results >>> are quite different :( buffers are always under 5 usually 2 and its not >>> like there's been a great deal of activity. The last test I did was just a >>> boot, login, shutdown ( result was / not clean but all the others ok ). >> >> Modern IDE drives sometimes lie about having finished writing out the >> data, when in fact it's still only in cache. You should be able to >> disable this behaviour to test (try the BIOS). > > I have a "HDD Post Write Buffer" in the BIOS according to the MB manual > although the disks aren't connected to the MB controllers they are on RAID 5 > set off a PCI-X card. Will give it a go tomorrow ( drag the monitor > back to the rack ). Will this have any performance penalties? I could > just avoid using shutdown -p but it seems a bit dodgy what its doing. > If this machine where miles away without remote console it would have > caused major amounts of pain. > > Steve > Why would you use shutdown -p on a remote machine anyway. I could see possibly a shutdown -r but -p come on. - -- ( When in doubt, use brute force. -- Ken Thompson 1998 ) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) Comment: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xF7DF979F Comment: Fingerprint = D1DC 0AA4 1C4E EAD4 24EB 7E77 B261 50BA F7DF 979F iD8DBQFCdh2ksmFQuvffl58RAmIGAJ9vc33q+QOAf8dSQvGB4bb5fMIB3QCdElTv 0Ih2mcy2eOMAEvb+ObhX2Pw= =N5SZ -----END PGP SIGNATURE-----
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