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Added some diagnostic and explanatory messages to ntfsclone. 

(Logical change 1.354)
edge.strict_endians
omakaista.fi!szaka 2004-04-01 21:30:42 +00:00
parent 1bfe7eeb00
commit 37cf1d9b38
1 changed files with 53 additions and 26 deletions
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79
ntfsprogs/ntfsclone.c
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@ -62,6 +62,7 @@ struct {
int metadata_only;
char *output;
char *volume;
struct statfs stfs;
} opt;
struct bitmap {
@ -189,13 +190,13 @@ static void usage(void)
Eprintf("\nUsage: %s [options] device\n"
" Efficiently clone NTFS to a sparse file, device or standard output.\n"
"\n"
" -o FILE --output FILE Clone NTFS to the non-existent FILE\n"
" -O FILE --overwrite FILE Clone NTFS to FILE, overwriting if exists\n"
" -m --metadata Clone *only* metadata (for NTFS experts)\n"
" -f --force Force to progress (DANGEROUS)\n"
" -h --help Display this help\n"
" -o, --output FILE Clone NTFS to the non-existent FILE\n"
" -O, --overwrite FILE Clone NTFS to FILE, overwriting if exists\n"
" -m, --metadata Clone *only* metadata (for NTFS experts)\n"
" -f, --force Force to progress (DANGEROUS)\n"
" -h, --help Display this help\n"
#ifdef DEBUG
" -d --debug Show debug information\n"
" -d, --debug Show debug information\n"
#endif
"\n"
" If FILE is '-' then send NTFS data to stdout replacing non used\n"
@ -394,8 +395,16 @@ static void copy_cluster(void)
if (read_all(vol->dev, buff, vol->cluster_size) == -1)
perr_exit("read_all");
if (write_all(&fd_out, buff, vol->cluster_size) == -1)
perr_exit("write_all");
if (write_all(&fd_out, buff, vol->cluster_size) == -1) {
int err = errno;
perr_printf("Write failed");
if (err == EIO && opt.stfs.f_type == 0x517b)
Printf("Apparently you tried to clone to a remote "
"Windows computer but they don't\nhave "
"efficient sparse file handling by default. "
"Please try a different method.\n");
exit(1);
}
}
static void lseek_to_cluster(s64 lcn)
@ -973,6 +982,39 @@ static void fsync_clone(int fd)
perr_exit("fsync");
}
static void set_filesize(s64 filesize)
{
if (fstatfs(fd_out, &opt.stfs) == -1)
Printf("WARNING: Couldn't get filesystem type: "
"%s\n", strerror(errno));
else if (opt.stfs.f_type == 0x52654973)
Printf("WARNING: You're using ReiserFS, it has very poor "
"performance creating\nlarge sparse files. The next "
"operation might take a very long time!\n"
"Creating sparse output file ...\n");
else if (opt.stfs.f_type == 0x517b)
Printf("WARNING: You're using SMBFS and if the remote share "
"isn't Samba but a Windows\ncomputer then the clone "
"operation will be very inefficient and may fail!\n");
if (ftruncate(fd_out, filesize) == -1) {
int err = errno;
perr_printf("ftruncate failed for file '%s'", opt.output);
if (err == E2BIG) {
Printf("Your system or the destination filesystem "
"doesn't support large files.\n");
if (opt.stfs.f_type == 0x517b) {
Printf("SMBFS needs minimum Linux kernel "
"version 2.4.25 and\n the 'lfs' option"
"\nfor mount or smbmount to have large "
"file support.\n");
}
}
exit(1);
}
}
int main(int argc, char **argv)
{
ntfs_walk_clusters_ctx image;
@ -1015,23 +1057,7 @@ int main(int argc, char **argv)
if ((fd_out = open(opt.output, flags, S_IRWXU)) == -1)
perr_exit("Opening file '%s' failed", opt.output);
if (!opt.blkdev_out) {
struct statfs stfs;
if (fstatfs(fd_out, &stfs) == -1)
Printf("Couldn't get Linux filesystem type: "
"%s\n", strerror(errno));
else if (stfs.f_type == 0x52654973) {
Printf("WARNING: You're using ReiserFS, it has "
"very poor performance creating\nlarge "
"sparse files. The next operation "
"might take a very long time!\n"
"Creating sparse output file ...\n");
}
if (ftruncate(fd_out, device_size) == -1)
perr_exit("ftruncate failed for file '%s'",
opt.output);
} else {
if (opt.blkdev_out) {
s64 dest_size = device_size_get(fd_out);
s64 ntfs_size = vol->nr_clusters * vol->cluster_size;
ntfs_size += 512; /* add backup boot sector */
@ -1040,7 +1066,8 @@ int main(int argc, char **argv)
" to fit the NTFS image.\n", dest_size);
check_if_mounted(opt.output, 0);
}
} else
set_filesize(device_size);
}
setup_lcn_bitmap();