On Wed, Mar 24, 2010 at 06:39:20PM +0200, Pasi Kärkkäinen wrote: > Hello, > > What's the current status of Linux device mapper integrity (checksumming) features? > > iirc bio integrity extensions were integrated into Linux 2.6.27, but those are only > usable for SCSI disks that provide 520-bytes per sector support and also have the > hardware support for verifying the checksums, correct? Or then you need to have a HBA > or RAID-adapter with integrity support.. > > (bio integrity patches: http://kerneltrap.org/mailarchive/linux-kernel/2008/6/7/2056354) > > Is it possible to use 'normal' 512-bytes per sectors disks, and store the checksums > on them, and calculate/verify the checkcums in software in device mapper.. > this obviously gives you a bit less usable space, but would be suitable for sw-raid scenarios. > > I guess that sounds pretty much like dm-csum: > https://patchwork.kernel.org/patch/25245/ > > What's the status of all this nowadays? > Any comments about this? -- Pasi -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
