forked from Mirrors/btrfs-progs
btrfs-progs: mkfs should check for small vol well before
This fix the regression introduced by 830427d that it no more creates the FS if disk is small and if no mixed option is provided. This patch will bring it to the original design which will force mixed profile when disk is small and go ahead to create the FS. Which also means that before we open the device for the write we should also check if disk is small. v2: fixes the checkpatch.pl warnings Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>master
parent
71d6bd3c8d
commit
cdbc107292
20
mkfs.c
20
mkfs.c
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@ -1409,6 +1409,17 @@ int main(int ac, char **av)
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file = av[optind++];
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ssd = is_ssd(file);
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if (is_vol_small(file)) {
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printf("SMALL VOLUME: forcing mixed metadata/data groups\n");
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mixed = 1;
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if (metadata_profile != data_profile) {
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if (metadata_profile_opt || data_profile_opt) {
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fprintf(stderr,
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"With mixed block groups data and metadata profiles must be the same\n");
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exit(1);
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}
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}
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}
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/*
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* Set default profiles according to number of added devices.
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* For mixed groups defaults are single/single.
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@ -1429,7 +1440,6 @@ int main(int ac, char **av)
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BTRFS_BLOCK_GROUP_RAID0 : 0; /* raid0 or single */
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}
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} else {
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/* this is not needed but just for completeness */
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metadata_profile = 0;
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data_profile = 0;
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}
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@ -1488,14 +1498,6 @@ int main(int ac, char **av)
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}
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if (mixed) {
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if (metadata_profile != data_profile) {
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fprintf(stderr, "With mixed block groups data and metadata "
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"profiles must be the same\n");
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exit(1);
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}
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}
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blocks[0] = BTRFS_SUPER_INFO_OFFSET;
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for (i = 1; i < 7; i++) {
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blocks[i] = BTRFS_SUPER_INFO_OFFSET + 1024 * 1024 +
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29
utils.c
29
utils.c
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@ -1920,3 +1920,32 @@ int scan_for_btrfs(int where, int update_kernel)
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}
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return ret;
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}
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int is_vol_small(char *file)
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{
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int fd = -1;
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int e;
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struct stat st;
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u64 size;
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fd = open(file, O_RDONLY);
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if (fd < 0)
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return -errno;
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if (fstat(fd, &st) < 0) {
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e = -errno;
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close(fd);
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return e;
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}
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size = btrfs_device_size(fd, &st);
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if (size == 0) {
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close(fd);
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return -1;
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}
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if (size < 1024 * 1024 * 1024) {
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close(fd);
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return 1;
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} else {
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close(fd);
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return 0;
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}
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}
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