Issue #3099 has been updated by liweitianux. Status changed from In Progress to Resolved
Committed in 0a31961570a4f5b0eff99d4c2e54d7bc722c8c2f ---------------------------------------- Submit #3099: disklabel64: Fix partition 1MiB phsycial alignment; with other minor updates and cleanups http://bugs.dragonflybsd.org/issues/3099#change-13387 * Author: liweitianux * Status: Resolved * Priority: Normal * Assignee: dillon * Category: Kernel * Target version: ---------------------------------------- Hello, According to disklabel64(8), the partitions within a slice are physically aligned to 1MiB (PALIGN_SIZE). However, there is a mistake in l64_makevirginlabel() in kern/subr_disklabel64.c, which causes the partitions are actually only 32KiB aligned. The proposed patches here fix this issue, and introduce some more updates and cleanups: * Calculate d_pbase and d_pstop to make them both physically aligned to 1MiB; * Defined BOOT2SIZE64 in sys/disklabel64.h to replace the use of 32768; * Reserve space for the backup label at the slice end (after d_pstop), though the backup functionality not implemented; * Make the "auto" disk type optional, since the disk type support is not implement; * Update several comments, displayed disklabel descriptions; * Fix two compilation warnings due to the mismatched type in strncpy(); * Add "static" keyword; cleanup unused variables and definitions. I also pushed these patches to my GitHub at: https://github.com/liweitianux/dragonflybsd/tree/disklabel Here is a comparison of the virgin labels generated: diskinfo: /dev/ad4s1 blksize=512 offset=0x000000007e00 size=0x002543158200 149.05 GB Before: ------------------------------------------------------------------------------ # boot space: 1044992 bytes # data space: 156287323 blocks # 152624.34 MB (160038219264 bytes) boot2 data base: 0x000000001000 partitions data base: 0x000000100200 partitions data stop: 0x002543157000 backup label: 0x002543157000 total size: 0x002543158200 # 152625.34 MB ------------------------------------------------------------------------------ After: ------------------------------------------------------------------------------ # boot space: 1012224 bytes # data space: 156286976 blocks # 152624.00 MB (160037863424 bytes) boot2 data base: 0x000000001000 partitions data base: 0x0000000f8200 partitions data stop: 0x0025430f8200 backup label: 0x0025430f8200 total size: 0x002543158200 # 152625.34 MB ------------------------------------------------------------------------------ Thanks for reviewing these patches. Aly -- You have received this notification because you have either subscribed to it, or are involved in it. To change your notification preferences, please click here: http://bugs.dragonflybsd.org/my/account
