On 10/3/11 4:05 PM, Richard W.M. Jones wrote: > On Mon, Oct 03, 2011 at 03:10:43PM -0500, Eric Sandeen wrote: >> On 10/3/11 1:13 PM, Richard W.M. Jones wrote: >>> On Mon, Sep 26, 2011 at 02:51:33PM -0500, Eric Sandeen wrote: >>>> Another little heads up - a newer snapshot is built in rawhide now. >>>> >>>> Anyone who wants to fiddle with large ext4 filesystems, have at >>>> it please! >>> >>> Is there any background information to this change that I can read? >>> >>> I created a 2**60 byte disk, partitioned it, and tried to create an >>> ext4 filesystem on it, but that doesn't work: >> >> heh; going for the gusto I see! >> >> Can we maybe start with a mere 500 terabytes? ;) > > Well I started with 2**63-513, but sadly qemu has a bug that prevents > me from writing to such a disk ... > > https://rwmj.wordpress.com/2011/10/03/maximum-qcow2-disk-size/ > https://bugs.launchpad.net/qemu/+bug/865518 > >>> ><rescue> mke2fs -t ext4 /dev/vda1 >>> mke2fs 1.42-WIP (25-Sep-2011) >>> >>> Warning: the fs_type huge is not defined in mke2fs.conf >> >> Icky, but unrelated to below, I think >> >>> /dev/vda1: Cannot create filesystem with requested number of inodes while >>> setting up superblock >> >> sounds like it calculated an inode ratio that put it over the 2^32 inode nr. >> limit. >> >> I'll look into it. > > Thanks. Let me know if/when there's anything else I can test.
testing something more real-world (20T ... 500T?) might still be interesting. I'm finding a couple issues already right up at the theoretical max limit, just at mkfs time :( -Eric > Rich. > -- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel
