Date: Sat, 12 Apr 2014 20:28:39 +0000 (UTC) From: Marcel Moolenaar <marcel@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r264378 - head/sys/geom/part Message-ID: <201404122028.s3CKSdo1026394@svn.freebsd.org>
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Author: marcel Date: Sat Apr 12 20:28:39 2014 New Revision: 264378 URL: http://svnweb.freebsd.org/changeset/base/264378 Log: Align and round the partitionable disk space to 4K by default. Since this would also apply when recovering, make sure not to align or round when that would have a partition fall outside the partitionable area. Modified: head/sys/geom/part/g_part_gpt.c Modified: head/sys/geom/part/g_part_gpt.c ============================================================================== --- head/sys/geom/part/g_part_gpt.c Sat Apr 12 20:22:59 2014 (r264377) +++ head/sys/geom/part/g_part_gpt.c Sat Apr 12 20:28:39 2014 (r264378) @@ -1174,9 +1174,12 @@ g_part_gpt_write(struct g_part_table *ba static void g_gpt_set_defaults(struct g_part_table *basetable, struct g_provider *pp) { + struct g_part_entry *baseentry; + struct g_part_gpt_entry *entry; struct g_part_gpt_table *table; - quad_t last; - size_t tblsz; + quad_t start, end, min, max; + quad_t lba, last; + size_t spb, tblsz; table = (struct g_part_gpt_table *)basetable; last = pp->mediasize / pp->sectorsize - 1; @@ -1192,11 +1195,31 @@ g_gpt_set_defaults(struct g_part_table * table->state[GPT_ELT_SECHDR] = GPT_STATE_OK; table->state[GPT_ELT_SECTBL] = GPT_STATE_OK; - table->hdr->hdr_lba_start = 2 + tblsz; - table->hdr->hdr_lba_end = last - tblsz - 1; + max = start = 2 + tblsz; + min = end = last - tblsz - 1; + LIST_FOREACH(baseentry, &basetable->gpt_entry, gpe_entry) { + if (baseentry->gpe_deleted) + continue; + entry = (struct g_part_gpt_entry *)baseentry; + if (entry->ent.ent_lba_start < min) + min = entry->ent.ent_lba_start; + if (entry->ent.ent_lba_end > max) + max = entry->ent.ent_lba_end; + } + spb = 4096 / pp->sectorsize; + if (spb > 1) { + lba = start + ((start % spb) ? spb - start % spb : 0); + if (lba <= min) + start = lba; + lba = end - (end + 1) % spb; + if (max <= lba) + end = lba; + } + table->hdr->hdr_lba_start = start; + table->hdr->hdr_lba_end = end; - basetable->gpt_first = table->hdr->hdr_lba_start; - basetable->gpt_last = table->hdr->hdr_lba_end; + basetable->gpt_first = start; + basetable->gpt_last = end; } static void
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