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Detect and hint users if the destination fs doesn't support sparse files

edge.strict_endians
szaka 2005-06-27 21:03:06 +00:00
parent 70530ad551
commit 60d0ed80a5
1 changed files with 17 additions and 3 deletions
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20
ntfsprogs/ntfsclone.c
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@ -1217,15 +1217,20 @@ static void fsync_clone(int fd)
static void set_filesize(s64 filesize)
{
long fs_type = 0; /* Unknown filesystem type */
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)
else
fs_type = opt.stfs.f_type;
if (fs_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)
else if (fs_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");
@ -1233,15 +1238,24 @@ static void set_filesize(s64 filesize)
if (ftruncate(fd_out, filesize) == -1) {
int err = errno;
perr_printf("ftruncate failed for file '%s'", opt.output);
if (fs_type)
Printf("Destination filesystem type is 0x%lx.\n",
(unsigned long)fs_type);
if (err == E2BIG) {
Printf("Your system or the destination filesystem "
"doesn't support large files.\n");
if (opt.stfs.f_type == 0x517b) {
if (fs_type == 0x517b) {
Printf("SMBFS needs minimum Linux kernel "
"version 2.4.25 and\n the 'lfs' option"
"\nfor smbmount to have large "
"file support.\n");
}
} else if (err == EPERM) {
Printf("Apparently the destination filesystem doesn't "
"support sparse files.\nYou can overcome this "
"by using the more efficient --save-image "
"option\nof ntfsclone. Use the --restore-image "
"option to restore the image.\n");
}
exit(1);
}