On Fri, Dec 9, 2016 at 12:29 PM, Andreas Dilger <adilger@xxxxxxxxx> wrote: > On Dec 8, 2016, at 10:40 PM, Simon Matthews <simon.d.matthews@xxxxxxxxx> wrote: >> >> I have an ext3 filesystem that will not mount under newer versions of >> the kernel and I hope someone here can help. >> >> Obviously, one solution is "backup and re-create from scratch". I have >> the backups, but I hope that there may be a quicker method to fix the >> issues. >> >> The root issue is that the filesystem is very slightly smaller than >> the allocated space. The filesystem exists on a MDRAID device and I >> think that when I converted the MDRAID to a newer metadata version, it >> truncated the available size, slightly. However, how I got here isn't >> really important, fixing it now is. > > Running "e2fsck -fy" should fix this. I'd recommend to use the latest > version of e2fsck. The system has v1.42.13 installed. Is that recent enough? Simon > > Cheers, Andreas > >> >> With an slightly older kernel (4.0.5), the filesystem can be mounted. >> With 4.4.26, the ext3 support is provided by the ext4 subsystem and it >> appears that it will not accept the size issues. dmesg showed this >> from the mount attempt: >> >> md5: detected capacity change from 0 to 2839999799296 >> [ 1162.508338] EXT4-fs (md5): mounting ext3 file system using the ext4 subsystem >> [ 1162.508560] EXT4-fs (md5): bad geometry: block count 693359344 >> exceeds size of device (693359326 blocks) >> >> As I stated, the difference is very small, so it was working OK for a long time. >> >> My attempts to re-size the filesystem did not work. I don't have the >> error messages available. Getting the system up and running was more >> important at the time. >> >> Apart from "backup and re-create", how can I fix this? What would be >> the correct options to use with resize2fs (if that is the correct >> approach)? fsck gave me some serious warnings about possibly >> destroying the filesystem, so I did not want to do this without >> advice. >> >> Simon >> -- >> 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 > > > Cheers, Andreas > > > > > -- 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
