The bigalloc and quota features have some known issues, so issue warnings in case users try to use them. More information can be found here: https://ext4.wiki.kernel.org/index.php/Bigalloc https://ext4.wiki.kernel.org/index.php/Quota Signed-off-by: "Theodore Ts'o" <tytso@xxxxxxx> --- misc/mke2fs.c | 12 ++++++++++++ misc/tune2fs.c | 4 ++++ resize/main.c | 14 ++++++++++++++ 3 files changed, 30 insertions(+) diff --git a/misc/mke2fs.c b/misc/mke2fs.c index ace9eae..fe5ce7d 100644 --- a/misc/mke2fs.c +++ b/misc/mke2fs.c @@ -1942,6 +1942,18 @@ profile_error: exit(1); } + if (fs_param.s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_BIGALLOC) + fprintf(stderr, _("\nWarning: the bigalloc feature is still " + "under development\n" + "See https://ext4.wiki.kernel.org/"; + "index.php/Bigalloc for more information\n\n")); + + if (fs_param.s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_QUOTA) + fprintf(stderr, _("\nWarning: the quota feature is still " + "under development\n" + "See https://ext4.wiki.kernel.org/"; + "index.php/Quota for more information\n\n")); + /* Since sparse_super is the default, we would only have a problem * here if it was explicitly disabled. */ diff --git a/misc/tune2fs.c b/misc/tune2fs.c index 2c8b9e8..849f3a0 100644 --- a/misc/tune2fs.c +++ b/misc/tune2fs.c @@ -736,6 +736,10 @@ void handle_quota_options(ext2_filsys fs) quota_release_context(&qctx); if ((usrquota == QOPT_ENABLE) || (grpquota == QOPT_ENABLE)) { + fprintf(stderr, _("\nWarning: the quota feature is still " + "under development\n" + "See https://ext4.wiki.kernel.org/"; + "index.php/Quota for more information\n\n")); fs->super->s_feature_ro_compat |= EXT4_FEATURE_RO_COMPAT_QUOTA; ext2fs_mark_super_dirty(fs); } else if (!fs->super->s_usr_quota_inum && diff --git a/resize/main.c b/resize/main.c index 711e375..4cbfe69 100644 --- a/resize/main.c +++ b/resize/main.c @@ -147,6 +147,18 @@ static void determine_fs_stride(ext2_filsys fs) #endif } +static bigalloc_check(ext2_filsys fs, int force) +{ + if (!force && EXT2_HAS_RO_COMPAT_FEATURE(fs->super, + EXT4_FEATURE_RO_COMPAT_BIGALLOC)) { + fprintf(stderr, _("\nResizing bigalloc file systems has " + "not been fully tested. Proceed\n" + "at your own risk! Use the force option " + "if you want to go ahead anyway.\n\n")); + exit(1); + } +} + int main (int argc, char ** argv) { errcode_t retval; @@ -428,6 +440,7 @@ int main (int argc, char ** argv) exit(0); } if (mount_flags & EXT2_MF_MOUNTED) { + bigalloc_check(fs, force); retval = online_resize_fs(fs, mtpt, &new_size, flags); } else { if (!force && ((fs->super->s_lastcheck < fs->super->s_mtime) || @@ -438,6 +451,7 @@ int main (int argc, char ** argv) device_name); exit(1); } + bigalloc_check(fs, force); printf(_("Resizing the filesystem on " "%s to %llu (%dk) blocks.\n"), device_name, new_size, fs->blocksize / 1024); -- 1.7.12.rc0.22.gcdd159b -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
