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author | Neil Brown <neilb@suse.de> | 2005-10-11 04:44:44 +0000 |
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committer | Neil Brown <neilb@suse.de> | 2005-10-11 04:44:44 +0000 |
commit | dcec9ee54779586f287f5db98ab1be3f0f02dd3f (patch) | |
tree | 053ff57337183f7b975433ad45f74a8cb245cdf9 /Grow.c | |
parent | 5a6d7f456ad67779321d8aa81203f70bcc56a0a5 (diff) | |
download | mdadm-dcec9ee54779586f287f5db98ab1be3f0f02dd3f.tar.gz mdadm-dcec9ee54779586f287f5db98ab1be3f0f02dd3f.tar.xz mdadm-dcec9ee54779586f287f5db98ab1be3f0f02dd3f.zip |
Create version-4 bitmaps if kernel supports it.
Version-3 bitmaps are host-endian. Version-4 are little-endian
and so more portable.
Signed-off-by: Neil Brown <neilb@suse.de>
Diffstat (limited to 'Grow.c')
-rw-r--r-- | Grow.c | 14 |
1 files changed, 12 insertions, 2 deletions
@@ -206,6 +206,16 @@ int Grow_addbitmap(char *devname, int fd, char *file, int chunk, int delay, int mdu_bitmap_file_t bmf; mdu_array_info_t array; struct supertype *st; + int major = BITMAP_MAJOR_HI; + int vers = md_get_version(fd); + + 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 architectured. Consider upgrading the Linux kernel.\n"); +#endif + } if (ioctl(fd, GET_BITMAP_FILE, &bmf) != 0) { if (errno == ENOMEM) @@ -275,7 +285,7 @@ int Grow_addbitmap(char *devname, int fd, char *file, int chunk, int delay, int if (st->ss->load_super(st, fd2, &super, NULL)==0) { st->ss->add_internal_bitmap(st, super, chunk, delay, write_behind, - &array.size, 0); + &array.size, 0, major); st->ss->write_bitmap(st, fd2, super); } close(fd2); @@ -322,7 +332,7 @@ int Grow_addbitmap(char *devname, int fd, char *file, int chunk, int delay, int return 1; } if (CreateBitmap(file, 0, (char*)uuid, chunk, - delay, write_behind, array.size*2ULL)) { + delay, write_behind, array.size*2ULL, major)) { return 1; } bitmap_fd = open(file, O_RDWR); |