| CIA-4 | debian-installer: cjwatson * r1097 ubuntu/ (5 files in 2 dirs): Move mainline architectures to 2.6.30-5 kernels. | 00:36 |
|---|---|---|
| CIA-4 | debian-installer: cjwatson * r1098 ubuntu/debian/changelog: releasing version 20081029ubuntu37 | 00:38 |
| === Nicke_ is now known as Nicke | ||
| === dpm_ is now known as dpm | ||
| === mcasadevall is now known as NCommander | ||
| CIA-4 | base-installer: cjwatson * r369 ubuntu/ (debian/changelog debian/control library.sh): Use block-attr from di-utils 1.68. | 12:25 |
| CIA-4 | partman-crypto: cjwatson * r679 ubuntu/ (debian/changelog debian/control finish.d/crypto_config): Use block-attr from di-utils 1.68. | 12:27 |
| CIA-4 | partman-target: cjwatson * r762 ubuntu/ (4 files in 3 dirs): Use block-attr from di-utils 1.68. | 12:30 |
| CIA-4 | partman-target: cjwatson * r763 ubuntu/ (debian/changelog finish.d/create_fstab_header): Recommend blkid rather than vol_id in /etc/fstab. | 12:32 |
| CIA-4 | debian-installer: cjwatson * r1099 ubuntu/ (build/pkg-lists/base debian/changelog): Add util-linux-udeb to base, for blkid. | 12:43 |
| CIA-4 | debian-installer-utils: cjwatson * r675 ubuntu/ (14 files in 3 dirs): merge from Debian 1.68 | 14:19 |
| CIA-4 | debian-installer-utils: cjwatson * r676 ubuntu/debian/changelog: releasing version 1.68ubuntu1 | 14:21 |
| xivulon | I was investigating the use of unionfs for wubi/colinux 9.10 and stumbled upon this article: http://lizards.opensuse.org/2009/04/28/whats-behind-lzma-compressed-livecds/ | 15:11 |
| xivulon | source: http://git.opensuse.org/?p=people/coolo/clicfs.git | 15:14 |
| superm1 | xivulon, keep in mind aufs (unionfs's derivative) is being discussed at uds to be axed | 15:21 |
| superm1 | you'll want to probably sit in that discussion to see what happens of it | 15:21 |
| xivulon | is this in favor of unionmount? | 15:22 |
| superm1 | i've not heard what the alternative to be proposed was | 15:23 |
| superm1 | but I think they are discussing axing aufs because upstream has denied it going into the kernel so many times | 15:23 |
| cjwatson | xivulon: we investigated some of that kind of thing around 9.04 release time; the rather critical problem with that approach is that lzma kills rsyncability | 15:26 |
| cjwatson | but I haven't specifically looked at clicfs, and will do | 15:26 |
| cjwatson | axing aufs isn't in favour of *anything* yet, we literally don't know what to do | 15:26 |
| cjwatson | all the options suck, AFAICT | 15:27 |
| cjwatson | unionfs-fuse is potentially interesting | 15:27 |
| xivulon | mini_fo might also be interesting | 15:29 |
| xivulon | but looks unmaintained | 15:29 |
| cjwatson | mm, don't want yet another badly-maintained union filesystem :) | 15:30 |
| xivulon | just googled the topic :) mini_fo is used in openwrt, so it should be used quite widely | 15:31 |
| superm1 | openwrt doesn't rev to current kernels often though | 15:31 |
| superm1 | i'm still running a "current" 2.4 series kernel on one of my AP's | 15:32 |
| cjwatson | yeah, git repository last updated in June 2006, I think it's extremely unlikely that'll build let alone work | 15:32 |
| cjwatson | (mini_fo) | 15:32 |
| xivulon | the source might give some ideas though, apparently has less features/craft (only 2 layers, 1 ro, 1rw...) | 15:33 |
| xivulon | anyway have subscribed (thanks superm1 had missed that from the title), will be an interesting discussion | 15:33 |
| cjwatson | much more interested in working solutions than in ideas :-) I totally don't want to get into writing kernel union filesystems, ever | 15:34 |
| xivulon | I was also curious about device-mapper snapshots, never tried that, what are the pros/cons? | 15:36 |
| cjwatson | the source device has to be the same filesystem as the filesystem you want to expose, so basically would need to be ext3; in order to compress that you need either gzip (too big) or the lzma patches (not in kernel yet and totally break rsyncability) | 15:37 |
| cjwatson | the cons are enough for me to veto it; I don't think it's usable for us | 15:37 |
| cjwatson | (unfortunately) | 15:37 |
| xivulon | I'd guess clicfs could be made a bit modular in terms of compression | 15:38 |
| cjwatson | well, it could, but it wouldn't help | 15:41 |
| cjwatson | the choices, at that level, are gzip compression or lzma compression | 15:41 |
| cjwatson | gzip compression won't fit, and lzma compression won't rsync | 15:41 |
| xivulon | I see thanks for the clarification | 15:43 |
| cjwatson | (we had high hopes for this and did experiments, only to be disappointed) | 15:44 |
| superm1 | rsync can't be outfitted to support lzma compression too? | 15:47 |
| xivulon | is the uds schedule automatic based on presence or do I need to poke someone? | 15:49 |
| cjwatson | superm1: other way round | 15:51 |
| cjwatson | superm1: basically, lzma gets its high compression ratios because it shuffles things about a lot, which more or less inevitably reduces rsyncability | 15:51 |
| superm1 | ah i see | 15:52 |
| cjwatson | you'd have to reduce its block size a lot in order to make it rsyncable, and at that point why bother using lzma ... | 15:52 |
| xivulon | so it cannot really be fixed | 15:53 |
| cjwatson | not in lzma, as far as I know, no | 15:53 |
| cjwatson | well, that's interesting | 16:23 |
| cjwatson | unionfs-fuse manages to mount, but then when casper does 'mount -o move /filesystem.squashfs /root/rofs', most of /root disappears except for /root/rofs | 16:23 |
| davmor2 | xivulon: I've added a comment to bug 375476 can you just check if my thinking is correct please | 16:57 |
| ubottu | Launchpad bug 375476 in wubi "Wubi-9.04-rev134.exe on winxp sp3 not show menu-user-disk-passwd & not work reboot now" [Undecided,New] https://launchpad.net/bugs/375476 | 16:57 |
| xivulon | davmor2: commented in the bug and closed it | 17:02 |
| xivulon | any issue with r134? | 17:03 |
| davmor2 | not had chance unfortunately hopefully latter or tomorrow morning first thing. | 17:05 |
| xivulon | cjwatson, robbiew mentioned that the swapfile session was scraped becase already agreed upon, could you quickly remind me what was decided re swapfile? | 17:06 |
| robbiew | xivulon: I believe the whiteboard section of the blueprint has a summary | 17:07 |
| robbiew | xivulon: whoops, nevermind. Must have just been an email thread that I was recalling | 17:09 |
| robbiew | xivulon: kirkland should also be able to provide some background | 17:09 |
| xivulon | I am mostly interested in implications for hibernation and preseeding (given that wubi obviously uses a swap file) | 17:10 |
| cjwatson | preseeding obviously needs to work but I don't think it needs a *third* UDS session to decide on it - any implementation must arrange for partman-auto recipes to have an appropriate syntax | 17:11 |
| cjwatson | if that needs to be discussed, Debconf is a better forum than UDS, and I've committed to bringing this up with the other d-i developers there if I haven't already got something working before then | 17:11 |
| cjwatson | with regard to hibernation, Documentation/power/swsusp-and-swap-files.txt says it works at the kernel level but I would be entirely unsurprised to find out that there were bugs (kernel or initramfs or something else). The initial work required, though, is in adding swap files as a *non-default* option and there's no need to block that on hibernation support being known to work | 17:12 |
| cjwatson | indeed, it will be easier to have a meaningful discussion about hibernation once we have installer support for this stuff so that it's easy for people to try it out | 17:13 |
| cjwatson | I just don't want to spend valuable UDS time going over old ground | 17:13 |
| cjwatson | when the thing that's blocking swapfile support in the installer is simply lack of time to implement, not lack of time to design | 17:13 |
| cjwatson | I don't imagine anything would need to change in wubi for the moment; it may be that we can simplify partman-auto-loop later on based on core work | 17:14 |
| cjwatson | but wubi is not the primary target for the time being, I just want to add the core facility | 17:14 |
| xivulon | cjwatson thx | 17:14 |
| cjwatson | oh, I see why unionfs-fuse was behaving oddly for me | 17:15 |
| cjwatson | the mount -o move rips its read-only filesystem out from under it, and it doesn't have its own namespace | 17:15 |
| cjwatson | I'll try mount -o bind, and there might also be some trickery that's possible with namespace cloning | 17:16 |
| CIA-4 | debian-installer: cjwatson * r1100 ubuntu/debian/changelog: releasing version 20081029ubuntu38 | 17:27 |
| kirkland | robbiew: hiya, what am I providing background on? | 17:31 |
| robbiew | kirkland: swapfile UDS session...I think cjwatson handled it | 17:32 |
| CIA-4 | base-installer: cjwatson * r370 ubuntu/debian/changelog: releasing version 1.99ubuntu2 | 17:32 |
| kirkland | robbiew: gotcha; cjwatson: thanks ;-) | 17:32 |
| CIA-4 | partman-crypto: cjwatson * r680 ubuntu/debian/changelog: releasing version 36ubuntu6 | 17:34 |
| xivulon | cjwatson in man unionfs-fuse: "Presently it is not possible to create a union for /" | 17:36 |
| xivulon | not sure what it refers to though, canno find a bugtracker | 17:36 |
| cjwatson | yeah, I saw that | 17:37 |
| cjwatson | I'm making a working assumption that it's not referring to the initramfs case; but if it is, I think I have some ideas | 17:37 |
| cjwatson | it may just mean that you can't do it directly | 17:38 |
| CIA-4 | partman-target: cjwatson * r764 ubuntu/debian/changelog: releasing version 59ubuntu2 | 17:40 |
| xivulon | there is also the issue with sendsigs an fuse, which we handled already | 17:40 |
| cjwatson | right, it would be prudent to guard unionfs-fuse from being killed by sendsigs | 17:41 |
| cjwatson | least of the problems though :-) | 17:41 |
| xivulon | cjwatson: http://groups.google.com/group/unionfs-fuse/browse_thread/thread/1d4cf2a090a60de2 | 17:49 |
| xivulon | also contains an live-cd example | 17:51 |
| cjwatson | spoiling my fun | 17:53 |
| xivulon | http://podgorny.cz/~bernd/hg/hgwebdir.cgi/radek-trunk-bernd-merge/rev/2f608ea6557e | 17:53 |
| xivulon | it would be nice if the cow dir was a (resizable) cow file | 17:59 |
| cjwatson | I'm not sure that chroot option is needed | 18:00 |
| cjwatson | as long as unionfs-fuse's original filesystem namespace remains available (which it will, it's the initramfs), then it should be able to just continue operating in it | 18:01 |
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