Hello everybody, sorry for this question if it has been asked before; I couldn't find information about this. Please keep me CC'ed - I'm not subscribed. Thank you. Ext2/3 have ext2resize/resize2fs, ext2prepare and ext3online for resizing. But they don't work for ext4. Here's a sample output for a 64MB loopback-mounted file: # ext2online -C -f -d tst ext2online v1.1.19 - 2001/03/18 for EXT2FS 0.5b ext2_open ext2_bcache_init ext2_determine_itoffset setting itoffset to +259 ext2_get_reserved Found 255 blocks in s_reserved_gdt_blocks 8 old groups, 1 blocks 32 new groups, 1 blocks ext2_ioctl: EXTEND group to 65537 blocks using itoffset of 259 new block bitmap is at 0x10001 new inode bitmap is at 0x10002 new inode table is at 0x10104-0x10203 new group has 7934 free blocks new group has 2048 free inodes (256 blocks) ext2_ioctl: ADD group 8 ext2online: ext2_ioctl: Inappropriate ioctl for device ext2online: unable to resize /tmp/tst That this doesn't work could be caused by my old ext2online version; # ext2online -V ext2online v1.1.19 - 2001/03/18 for EXT2FS 0.5b but what makes me wonder is that the sf project http://ext2resize.sourceforge.net/download.html still lists 1.19 as current. Should that work for ext4 too? # cat /proc/version Linux version 2.6.22-rc5-686 (Debian 2.6.22~rc5-1~experimental.1) (waldi@xxxxxxxxxx) (gcc version 4.1.3 20070601 (prerelease) (Debian 4.1.2-12)) #1 SMP Wed Jun 27 22:21:14 UTC 2007 There's a resize.c in the ext4 directory http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=tree;f=fs/ext4;h=e509c1bf9448c343b7a4666dae4dfed0afe228ad;hb=HEAD so I'd thought that it should include that functionality. What am I doing wrong? Thank you for all answers. Regards, Phil - 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