lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Thu, 22 Jul 2010 15:18:11 -0400 From: "John Stoffel" <john@...ffel.org> To: Jeremy Allison <jra@...ba.org> Cc: Trond Myklebust <trond.myklebust@....uio.no>, Linus Torvalds <torvalds@...ux-foundation.org>, Volker.Lendecke@...net.de, David Howells <dhowells@...hat.com>, Jan Engelhardt <jengelh@...ozas.de>, linux-cifs@...r.kernel.org, linux-nfs@...r.kernel.org, samba-technical@...ts.samba.org, linux-kernel@...r.kernel.org, viro@...iv.linux.org.uk, linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org Subject: Re: [PATCH 02/18] xstat: Add a pair of system calls to make extended file stats available [ver #6] >>>>> "Jeremy" == Jeremy Allison <jra@...ba.org> writes: Jeremy> On Thu, Jul 22, 2010 at 12:58:50PM -0400, Trond Myklebust wrote: >> >> That would make it impossible to export the filesystem with NFSv2 and >> v3. They do rely on ctime checking for certain operations (e.g. deciding >> when to invalidate access and acl caches). NFSv4 needs this too if the >> filesystem has no dedicated change attribute. >> >> Still, I suppose the market for exporting the same filesystem with both >> NFS and Samba is limited... Jeremy> Ask NetApp about that :-). They have built a rather large Jeremy> business on just that fact :-). And it does work, as long as you also go with either unix or windows semantics for the security and permissions bits. If you try to use the mixed-mode, you're in for a world of hurt. Oh yeah, Netapp still uses dump/restore for it's backups. :] Though whether it's still dependent on the optimization of ctime being used to know whether to just dump the inode only or not, I can't say. John -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists