On Wed, Jan 20, 2010 at 12:24 AM, Karel Zak <kzak@xxxxxxxxxx> wrote: > On Tue, Jan 19, 2010 at 07:00:03PM +0100, Aleksander Adamowski wrote: >> Concerning the recent rollout of HDDs with 4 kb physical sectors and > > install kernel >= 2.6.31, util-linux-ng 2.17, and use fdisk. Considering the various customizations/patches that distributors do to packaged kernels, is there a universal method to verify whether the given kernel supports the necessary functionality (regardless of reported version)? Ideally, the method should employ the same syscalls that the new fdisk and parted would use. Is using sg_readcap like below sufficient? $ sudo sg_readcap -l /dev/sdc Read Capacity results: ..... Logical block length=512 bytes Logical blocks per physical block=3 (log base 2) [actual=8] AFAIU, sg_readcap would not report logical blocks per physical block on older kernels? -- Best Regards, Aleksander Adamowski http://olo.org.pl -- To unsubscribe from this list: send the line "unsubscribe util-linux-ng" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
