[Bug 1601997] Re: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs
FWIW: e2fsprogs PPA created and discussion of backports/updates should happen on this linked-bug:- https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/1365874 -- if you are interested in xenial/older e2fsprogs compatibility please subscribe to that bug #1365874 . I also spotted e2fsprogs 1.44.2 has fix against crashing from malicious- filesystems, remains to be seen if this and further future fixes may ultimately warrant update to bionic's 1.44.1 . -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1601997 Title: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/1601997/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 1601997] Re: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs
On Thu, Mar 15, 2018 at 06:08:36PM -, Simon Iremonger wrote: > Given what you say, can you consider Tytso's request to put 1.44.0 > e2fsprogs into Bionic. This allows for not-enabled-by-default for > support of 2 extra ext4 flags in e2fsprogs, thereby avoiding this > situation happening again for 20.04 with respect to THOSE flags... I've filed a feature freeze exception request for this issue. https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/1756177 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1601997 Title: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/1601997/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1601997] Re: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs
Steve: Given what you say, can you consider Tytso's request to put 1.44.0 e2fsprogs into Bionic. This allows for not-enabled-by-default for support of 2 extra ext4 flags in e2fsprogs, thereby avoiding this situation happening again for 20.04 with respect to THOSE flags... As TJ- said, be good to get it in for LTS release from the off. https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/1365874/comments/17 [maybe that should be handled in the other bug as above]. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1601997 Title: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/1601997/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1601997] Re: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs
This has been evaluated by the Foundations team and we do not intend to diverge from upstream's defaults for 18.04. The incompatibility between LTSes is not ideal, but is secondary to being able to improve the filesystem defaults across LTS releases. ** Changed in: e2fsprogs (Ubuntu) Status: Triaged => Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1601997 Title: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/1601997/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1601997] Re: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs
Initial comments from the email:- a) There is some confusion over "metadata_csum" with/without "64bit". -- Those who have 'reverted' are usually reverting BOTH flags [as I've done some places], not just metadata_csum. My understanding is 64bit is of no benefit except support >16TB fs and to strengthen metadata_csum's [if used, which help notice dodgy disks in theory.]. b) The business of including e2fsprogs-1.44.0 in 18.04 at tytso's request [NON-default extra feature support may benefit Samba users etc. later] is not addressed. c) Its' worth pointing-out explicitly e2fsprogs only enabled 64bit,metadata_csum 'by default' for 'everybody' within last few weeks, Debian change was as-you-rightly-quote. d) Considering the above, also think outside the ubuntu-box! What do canonical's customers/partners expect compatibility-wise with other non- ubuntu systems, virtualizers/ISCSI-hosts/etc (e2fsprogs 1.42 still very common!), let alone "backports to ubuntu LTS versions" only?. e) My understanding from TJ in IRC is he's started doing some tests on some datacentre cases, there are particular issues with things like ISCSI hosts, the host system needs to fsck guest-FS and break otherwise!. HOPEFULLY this will appear soon and can be added to the mail-discussion. I can try to join email/post directly to mail if appropriate/helpful. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1601997 Title: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/1601997/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1601997] Re: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs
I posted to the mailing list about this: https://lists.ubuntu.com/archives/ubuntu-devel/2018-March/040230.html -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1601997 Title: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/1601997/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1601997] Re: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs
** Tags added: rls-bb-incoming -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1601997 Title: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/1601997/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1601997] Re: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs
Can we pay-attention, to this thread (now) being about considering the feature-flags 'used by default' in mke2fs.conf, in consideration to 18.04 -- [linked bug for e2fsprogs]. We know massive 'compatibility'/portability benefit of formatting the same as previous-LTS by default, as the required e2fsprogs was only introduced 16.10, and the needed kernel was only in 16.04 (and 14.04 -HWE-kernel-update.). NB: Looks like there is a similar issue with GRUB2 which affects dual-booters, grub2 2.02beta3 may be needed to support 64bit FS. If so, again Xenial isn't compatible to detect an 18.04 in multi-boot-menu. I'd like tytso to comment on the downsides of formatting without 64bit,metadata_csum, more specifically. From what I can (see) this only loses a little extra checksumming-integrity (against bad disks, which we've never needed before??), and the 64bit feature appears only to be needed to strengthen these checksums or support >16TB disks (bearing in mind auto_64bit_support can still be used). NB: Is this correct, -OR- is there likely going to be future annoyances with 'other' ext4 features-to-come which will ALSO expect 64bit formatting?. My suggestion is, this hasn't been sorted-out enough in the ubuntu- world, and 64bit,metadata_csum should be disabled-by-default for 18.04 and backporting grub/e2fsprogs/etc where relevant should happen as well [see other thread, possibly another may be created for grub2]. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1601997 Title: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/1601997/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1601997] Re: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs
E2fsprogs 1.44.0 now depends on dpkg build-profiles, which means that getting it backported to 14.04 LTS would require adjusting debian/control and debian/rules a bit. For 14.04 LTS, I'd urge consideration of going to e2fsprogs 1.43.9. This will get you most of the latest bug fixes, including some that could cause massive file system corruption and data loss (relative to e2fsprogs 1.42.x) in the right (wrong) circumstances. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1601997 Title: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/1601997/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1601997] Re: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs
** Summary changed: - Ubuntu 16.10 installer sets metadata_csum option on ext4 partition which is incompatible with other LTS Ubuntu versions + Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1601997 Title: Ubuntu 16.10+ installer uses ext4 feature 'metadata_csum' which is incompatible with older (LTS) e2fsprogs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/1601997/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
