Re: [zfs-discuss] Access to ZFS checksums would be nice and very useful feature

2006-09-15 Thread Ceri Davies
On Thu, Sep 14, 2006 at 05:08:18PM -0500, Nicolas Williams wrote: On Thu, Sep 14, 2006 at 10:32:59PM +0200, Henk Langeveld wrote: Bady, Brant RBCM:EX wrote: Part of the archiving process is to generate checksums (I happen to use MD5), and store them with other metadata about the digital

Re: [zfs-discuss] Access to ZFS checksums would be nice and very useful feature

2006-09-15 Thread Luke Scharf
Luke Scharf wrote: It sounded to me like he wanted to implement tripwire, but save some time and CPU power by querying the checksumming-work that was already done by ZFS. Nevermind. The e-mail client that I chose to use broke up the thread, and I didn't see that the issue had already been

Re: [zfs-discuss] Access to ZFS checksums would be nice and very useful feature

2006-09-15 Thread Nicolas Williams
On Fri, Sep 15, 2006 at 09:31:04AM +0100, Ceri Davies wrote: On Thu, Sep 14, 2006 at 05:08:18PM -0500, Nicolas Williams wrote: Yes, but the checksum is stored with the pointer. So then, for each file/directory there's a dnode, and that dnode has several block pointers to data blocks or

[zfs-discuss] Access to ZFS checksums would be nice and very useful feature

2006-09-14 Thread Bady, Brant RBCM:EX
Title: Access to ZFS checksums would be nice and very useful feature I am working in the area of archiving (in the true send of the word - e.g. using the OAIS reference model) electronic data for long term preservation and access. ZFS now makes magnetic disk arrays a bit more suitable for

Re: [zfs-discuss] Access to ZFS checksums would be nice and very useful feature

2006-09-14 Thread Chad Lewis
On Sep 14, 2006, at 1:32 PM, Henk Langeveld wrote: Bady, Brant RBCM:EX wrote: Part of the archiving process is to generate checksums (I happen to use MD5), and store them with other metadata about the digital object in order to verify data integrity and demonstrate the authenticity of the

Re: [zfs-discuss] Access to ZFS checksums would be nice and very useful feature

2006-09-14 Thread James C. McPherson
Bady, Brant RBCM:EX wrote: I am working in the area of archiving (in the true send of the word - e.g. using the OAIS reference model) electronic data for long term preservation and access. ZFS now makes magnetic disk arrays a bit more suitable for that. Part of the archiving process is to

RE: [zfs-discuss] Access to ZFS checksums would be nice and very useful feature

2006-09-14 Thread Bady, Brant RBCM:EX
] -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Thursday, September 14, 2006 1:46 PM To: Henk Langeveld Cc: Bady, Brant RBCM:EX; zfs-discuss@opensolaris.org Subject: Re: [zfs-discuss] Access to ZFS checksums would be nice and very useful feature On Sep 14, 2006, at 1:32

Re: [zfs-discuss] Access to ZFS checksums would be nice and very useful feature

2006-09-14 Thread Nicolas Williams
On Thu, Sep 14, 2006 at 10:32:59PM +0200, Henk Langeveld wrote: Bady, Brant RBCM:EX wrote: Part of the archiving process is to generate checksums (I happen to use MD5), and store them with other metadata about the digital object in order to verify data integrity and demonstrate the

Re: [zfs-discuss] Access to ZFS checksums would be nice and very useful feature

2006-09-14 Thread Mike Gerdts
On 9/14/06, Chad Lewis [EMAIL PROTECTED] wrote: Better still would be the forthcoming cryptographic extensions in some kind of digital-signature mode. When I first saw extended attributes I thought that would be a great place to store a digital signature of the file. I'm not saying that it is

Re: [zfs-discuss] Access to ZFS checksums would be nice and very useful feature

2006-09-14 Thread Nicolas Williams
On Thu, Sep 14, 2006 at 06:26:46PM -0500, Mike Gerdts wrote: On 9/14/06, Chad Lewis [EMAIL PROTECTED] wrote: Better still would be the forthcoming cryptographic extensions in some kind of digital-signature mode. When I first saw extended attributes I thought that would be a great place to

Re: [zfs-discuss] Access to ZFS checksums would be nice and very useful feature

2006-09-14 Thread Matthew Ahrens
Bady, Brant RBCM:EX wrote: Actually to clarify - what I want to do is to be able to read the associated checksums ZFS creates for a file and then store them in an external system e.g. an oracle database most likely Rather than storing the checksum externally, you could simply let ZFS verify