X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=Build.c;h=962c2e3776b91ccb15135b9c0cff91f322a8c9fe;hb=ae7d61e35ec2ab6361c3e509a8db00698ef3396f;hp=52fc0ca01623cbeb220aa180a488fdcbd557e552;hpb=8a659c33212f85cc0dcecc759b7b36b0bb2b4fe4;p=thirdparty%2Fmdadm.git diff --git a/Build.c b/Build.c index 52fc0ca0..962c2e37 100644 --- a/Build.c +++ b/Build.c @@ -1,7 +1,7 @@ /* * mdadm - manage Linux "md" devices aka RAID arrays. * - * Copyright (C) 2001-2006 Neil Brown + * Copyright (C) 2001-2009 Neil Brown * * * This program is free software; you can redistribute it and/or modify @@ -19,24 +19,13 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * Author: Neil Brown - * Email: - * Paper: Neil Brown - * School of Computer Science and Engineering - * The University of New South Wales - * Sydney, 2052 - * Australia + * Email: */ #include "mdadm.h" -#define REGISTER_DEV _IO (MD_MAJOR, 1) -#define START_MD _IO (MD_MAJOR, 2) -#define STOP_MD _IO (MD_MAJOR, 3) - -int Build(char *mddev, int chunk, int level, int layout, - int raiddisks, mddev_dev_t devlist, int assume_clean, - char *bitmap_file, int bitmap_chunk, int write_behind, - int delay, int verbose, int autof) +int Build(char *mddev, struct mddev_dev *devlist, + struct shape *s, struct context *c) { /* Build a linear or raid0 arrays without superblocks * We cannot really do any checks, we just do it. @@ -46,24 +35,24 @@ int Build(char *mddev, int chunk, int level, int layout, * geometry is 0xpp00cc * where pp is personality: 1==linear, 2=raid0 * cc = chunk size factor: 0==4k, 1==8k etc. - * - * For md_version >= 0.90.0 we call - * SET_ARRAY_INFO, ADD_NEW_DISK, RUN_ARRAY - * */ int i; - int vers; - struct stat stb; + dev_t rdev; int subdevs = 0, missing_disks = 0; - mddev_dev_t dv; + struct mddev_dev *dv; int bitmap_fd; - unsigned long long size = ~0ULL; unsigned long long bitmapsize; int mdfd; char chosen_name[1024]; int uuid[4] = {0,0,0,0}; struct map_ent *map = NULL; + mdu_array_info_t array; + mdu_param_t param; /* not used by syscall */ + if (s->level == UnSet) { + pr_err("a RAID level is needed to Build an array.\n"); + return 1; + } /* scan all devices, make sure they really are block devices */ for (dv = devlist; dv; dv=dv->next) { subdevs++; @@ -71,225 +60,168 @@ int Build(char *mddev, int chunk, int level, int layout, missing_disks++; continue; } - if (stat(dv->devname, &stb)) { - fprintf(stderr, Name ": Cannot find %s: %s\n", - dv->devname, strerror(errno)); + if (!stat_is_blkdev(dv->devname, NULL)) return 1; - } - if ((stb.st_mode & S_IFMT) != S_IFBLK) { - fprintf(stderr, Name ": %s is not a block device.\n", - dv->devname); - return 1; - } } - if (raiddisks != subdevs) { - fprintf(stderr, Name ": requested %d devices in array but listed %d\n", - raiddisks, subdevs); + if (s->raiddisks != subdevs) { + pr_err("requested %d devices in array but listed %d\n", + s->raiddisks, subdevs); return 1; } - if (layout == UnSet) - switch(level) { + if (s->layout == UnSet) + switch(s->level) { default: /* no layout */ - layout = 0; + s->layout = 0; break; case 10: - layout = 0x102; /* near=2, far=1 */ - if (verbose > 0) - fprintf(stderr, - Name ": layout defaults to n1\n"); + s->layout = 0x102; /* near=2, far=1 */ + if (c->verbose > 0) + pr_err("layout defaults to n1\n"); break; case 5: case 6: - layout = map_name(r5layout, "default"); - if (verbose > 0) - fprintf(stderr, - Name ": layout defaults to %s\n", map_num(r5layout, layout)); + s->layout = map_name(r5layout, "default"); + if (c->verbose > 0) + pr_err("layout defaults to %s\n", map_num(r5layout, s->layout)); break; case LEVEL_FAULTY: - layout = map_name(faultylayout, "default"); + s->layout = map_name(faultylayout, "default"); - if (verbose > 0) - fprintf(stderr, - Name ": layout defaults to %s\n", map_num(faultylayout, layout)); + if (c->verbose > 0) + pr_err("layout defaults to %s\n", map_num(faultylayout, s->layout)); break; } /* We need to create the device. It can have no name. */ map_lock(&map); - mdfd = create_mddev(mddev, NULL, autof, LOCAL, - chosen_name); + mdfd = create_mddev(mddev, NULL, c->autof, LOCAL, + chosen_name, 0); if (mdfd < 0) { map_unlock(&map); return 1; } mddev = chosen_name; - map_update(&map, fd2devnum(mdfd), "none", uuid, chosen_name); + map_update(&map, fd2devnm(mdfd), "none", uuid, chosen_name); map_unlock(&map); - vers = md_get_version(mdfd); - - /* looks Ok, go for it */ - if (vers >= 9000) { - mdu_array_info_t array; - array.level = level; - array.size = 0; - array.nr_disks = raiddisks; - array.raid_disks = raiddisks; - array.md_minor = 0; - if (fstat(mdfd, &stb)==0) - array.md_minor = minor(stb.st_rdev); - array.not_persistent = 1; - array.state = 0; /* not clean, but no errors */ - if (assume_clean) - array.state |= 1; - array.active_disks = raiddisks - missing_disks; - array.working_disks = raiddisks - missing_disks; - array.spare_disks = 0; - array.failed_disks = missing_disks; - if (chunk == 0 && (level==0 || level==LEVEL_LINEAR)) - chunk = 64; - array.chunk_size = chunk*1024; - array.layout = layout; - if (ioctl(mdfd, SET_ARRAY_INFO, &array)) { - fprintf(stderr, Name ": SET_ARRAY_INFO failed for %s: %s\n", - mddev, strerror(errno)); - goto abort; - } - } else if (bitmap_file) { - fprintf(stderr, Name ": bitmaps not supported with this kernel\n"); + array.level = s->level; + if (s->size == MAX_SIZE) + s->size = 0; + array.size = s->size; + array.nr_disks = s->raiddisks; + array.raid_disks = s->raiddisks; + array.md_minor = 0; + if (fstat_is_blkdev(mdfd, mddev, &rdev)) + array.md_minor = minor(rdev); + array.not_persistent = 1; + array.state = 0; /* not clean, but no errors */ + if (s->assume_clean) + array.state |= 1; + array.active_disks = s->raiddisks - missing_disks; + array.working_disks = s->raiddisks - missing_disks; + array.spare_disks = 0; + array.failed_disks = missing_disks; + if (s->chunk == 0 && (s->level==0 || s->level==LEVEL_LINEAR)) + s->chunk = 64; + array.chunk_size = s->chunk*1024; + array.layout = s->layout; + if (md_set_array_info(mdfd, &array)) { + pr_err("md_set_array_info() failed for %s: %s\n", + mddev, strerror(errno)); goto abort; } - if (bitmap_file && level <= 0) { - fprintf(stderr, Name ": bitmaps not meaningful with level %s\n", - map_num(pers, level)?:"given"); + if (s->bitmap_file && strcmp(s->bitmap_file, "none") == 0) + s->bitmap_file = NULL; + if (s->bitmap_file && s->level <= 0) { + pr_err("bitmaps not meaningful with level %s\n", + map_num(pers, s->level)?:"given"); goto abort; } /* now add the devices */ for ((i=0), (dv = devlist) ; dv ; i++, dv=dv->next) { + mdu_disk_info_t disk; unsigned long long dsize; int fd; + if (strcmp("missing", dv->devname) == 0) continue; - if (stat(dv->devname, &stb)) { - fprintf(stderr, Name ": Weird: %s has disappeared.\n", - dv->devname); - goto abort; - } - if ((stb.st_mode & S_IFMT)!= S_IFBLK) { - fprintf(stderr, Name ": Wierd: %s is no longer a block device.\n", - dv->devname); + if (!stat_is_blkdev(dv->devname, &rdev)) goto abort; - } fd = open(dv->devname, O_RDONLY|O_EXCL); if (fd < 0) { - fprintf(stderr, Name ": Cannot open %s: %s\n", + pr_err("Cannot open %s: %s\n", dv->devname, strerror(errno)); goto abort; } if (get_dev_size(fd, NULL, &dsize) && - (size == 0 || dsize < size)) - size = dsize; + (s->size == 0 || s->size == MAX_SIZE || dsize < s->size)) + s->size = dsize; close(fd); - if (vers>= 9000) { - mdu_disk_info_t disk; - disk.number = i; - disk.raid_disk = i; - disk.state = (1<writemostly == 1) - disk.state |= 1<devname, strerror(errno)); - goto abort; - } - } else { - if (ioctl(mdfd, REGISTER_DEV, &stb.st_rdev)) { - fprintf(stderr, Name ": REGISTER_DEV failed for %s: %s.\n", - dv->devname, strerror(errno)); - goto abort; - } + disk.number = i; + disk.raid_disk = i; + disk.state = (1<writemostly == FlagSet) + disk.state |= 1<devname, strerror(errno)); + goto abort; } } /* now to start it */ - if (vers >= 9000) { - mdu_param_t param; /* not used by syscall */ - if (bitmap_file) { - bitmap_fd = open(bitmap_file, O_RDWR); - if (bitmap_fd < 0) { - int major = BITMAP_MAJOR_HI; + if (s->bitmap_file) { + bitmap_fd = open(s->bitmap_file, O_RDWR); + if (bitmap_fd < 0) { + int major = BITMAP_MAJOR_HI; #if 0 - if (bitmap_chunk == UnSet) { - fprintf(stderr, Name ": %s cannot be openned.", - bitmap_file); - goto abort; - } -#endif - if (vers < 9003) { - major = BITMAP_MAJOR_HOSTENDIAN; -#ifdef __BIG_ENDIAN - fprintf(stderr, Name ": Warning - bitmaps created on this kernel are not portable\n" - " between different architectures. Consider upgrading the Linux kernel.\n"); + if (s->bitmap_chunk == UnSet) { + pr_err("%s cannot be opened.\n", s->bitmap_file); + goto abort; + } #endif - } - bitmapsize = size>>9; /* FIXME wrong for RAID10 */ - if (CreateBitmap(bitmap_file, 1, NULL, bitmap_chunk, - delay, write_behind, bitmapsize, major)) { - goto abort; - } - bitmap_fd = open(bitmap_file, O_RDWR); - if (bitmap_fd < 0) { - fprintf(stderr, Name ": %s cannot be openned.", - bitmap_file); - goto abort; - } + bitmapsize = s->size >> 9; /* FIXME wrong for RAID10 */ + if (CreateBitmap(s->bitmap_file, 1, NULL, + s->bitmap_chunk, c->delay, + s->write_behind, bitmapsize, major)) { + goto abort; } - if (bitmap_fd >= 0) { - if (ioctl(mdfd, SET_BITMAP_FILE, bitmap_fd) < 0) { - fprintf(stderr, Name ": Cannot set bitmap file for %s: %s\n", - mddev, strerror(errno)); - goto abort; - } + bitmap_fd = open(s->bitmap_file, O_RDWR); + if (bitmap_fd < 0) { + pr_err("%s cannot be opened.\n", s->bitmap_file); + goto abort; } } - if (ioctl(mdfd, RUN_ARRAY, ¶m)) { - fprintf(stderr, Name ": RUN_ARRAY failed: %s\n", - strerror(errno)); - goto abort; - } - } else { - unsigned long arg; - arg=0; - while (chunk > 4096) { - arg++; - chunk >>= 1; + if (bitmap_fd >= 0) { + if (ioctl(mdfd, SET_BITMAP_FILE, bitmap_fd) < 0) { + pr_err("Cannot set bitmap file for %s: %s\n", + mddev, strerror(errno)); + goto abort; + } } - if (level == 0) - chunk |= 0x20000; - else chunk |= 0x10000; - if (ioctl(mdfd, START_MD, arg)) { - fprintf(stderr, Name ": START_MD failed: %s\n", - strerror(errno)); - goto abort; + } + if (ioctl(mdfd, RUN_ARRAY, ¶m)) { + pr_err("RUN_ARRAY failed: %s\n", strerror(errno)); + if (s->chunk & (s->chunk - 1)) { + cont_err("Problem may be that chunk size is not a power of 2\n"); } + goto abort; } - if (verbose >= 0) - fprintf(stderr, Name ": array %s built and started.\n", + + if (c->verbose >= 0) + pr_err("array %s built and started.\n", mddev); + wait_for(mddev, mdfd); close(mdfd); - wait_for(mddev); return 0; abort: - if (vers >= 9000) - ioctl(mdfd, STOP_ARRAY, 0); - else - ioctl(mdfd, STOP_MD, 0); + ioctl(mdfd, STOP_ARRAY, 0); close(mdfd); return 1; }