ext2.ko itself does support fsfreeze, but typical linux distros, like Ubuntu, don't supply ext2.ko at all now -- instead, they usually supply ext3.ko and have ext4 built-in.
So when we mount an ext2 partition, actually the kernel is registering the ext4 driver as an ext2 driver and in this case the ext2's s_op->freeze_fs is NULL -- so fsfreeze on ext3 can get -EOPNOTSUPP. The discussion is at http://marc.info/?t=141102289600007&r=1&w=2 The ext4 community has posted the patches to support ext2 fsfreeze when registering ext4 as ext2: http://marc.info/?l=linux-ext4&m=141107200212887&w=2 http://marc.info/?l=linux-ext4&m=141107200312889&w=2 http://marc.info/?l=linux-ext4&m=141107481213962&w=2 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1362574 Title: hyper-v: Manual partitioning formats /boot with ext2 file-system - Utopic Unicorn Status in “linux” package in Ubuntu: Triaged Bug description: This is a thread continuation from trusty bug ID 1297012, not a duplicate. The last outcome from it was that the issue was not going to be fixed in 14.04, please consider this for 14.10 Utopic Unicorn if possible. "Dimitri John Ledkov (xnox) wrote on 2014-04-07: #9 Hello Abhishek and Phillip, I've discussed this with a few other engineers and it is to risky to push such change this close to release. There are a few things that are planned / needed to be done with "/boot" and we should target it at u-series. This is a valid bug report / request, but i'm targeting it at u-series for now. We need to increase size of /boot, use ext4 (possible with journal, extents and huge file options disabled), remove need for /boot at all when one is using simple LVM volume group only. All of these changes are straight-forward, but can have impact on existing deployments and these are not features we'd be comfortable with deploying so late in the cycle, way past Feature Freeze. Regards, Dimitri." To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1362574/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
