Your message dated Fri, 21 Aug 2020 04:58:02 +0200 with message-id <20200821045802.07acb7c9ded347064600d...@mailbox.org> and subject line Re: Mass-closing old installation-report bugs --- round 5 has caused the Debian Bug report #876352, regarding Package: installation-report for Debian9 to be marked as done.
This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact ow...@bugs.debian.org immediately.) -- 876352: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=876352 Debian Bug Tracking System Contact ow...@bugs.debian.org with problems
--- Begin Message ---Package: installation-report Worth knowing if you use VirtualBox with Debian9 guests? : The rubyv3 guest is a fresh install of Debian9 from a CD including graphics and intended as a workstation. The rubyv4 guest is a fresh install of Debian9 from a network install CD with no optional software and intended to be built as a server. The rubyv5 guest is a fresh install of Ubuntu Server with no optional software. All are Virtualbox virtual machines. The underlying hardware OS is the same Debian9 with a 6TB array of five hard disks. File Sizes: rubyv3(debian w/s) rubyv4(debian srv) rubyv5(ubuntu srv) System use inside VM 3,071,064,000 1,189,448,000 1,554,552,000 reported by 'ls -l' .vdi size 4,942,987,264 109,515,374,592 4,632,608,768 .ova size 1,569,787,904 110,322,772,480 4,482,602,496 Why the difference in the .vdi and .ova file sizes for rubyv4, as compared to the files for rubyv3 and ruby5? All the file sizes for rubyv3 are reasonable, but ... ... requiring a 110GB .ova backup file for a 1.2GB install for rubyv4 is not! The reason for this appears to lie in the Debian install process and its interaction with Virtualbox. rubyv3 was installed onto an ext4 partition; rubyv4 was installed onto an encrypted LVM partition where the dynamic 110GB .vdi file was zeroed(with random numbers?) to its full size. Ubuntu server, using an encrypted LVM, dynamic 100GB partition layout, does not do the same(no zeroing of free space) but the compression algorithm achieves next to nothing in producing the .ova file. The desire to completely 'zero' a hardware disk before installing a new operating system is sensible but doing the same to a dynamic virtual disk that is encrypted is questionable. Compacting Virtualbox .vdi files: > dd if=/dev/zero of=zerofillfile status=progress bs=1M until the disk fills, then > rm zerofillfile and all free space is zeroed. Do not use 'if=/dev/urandom' in the 'dd' command!! > VBoxManage modifyhd <path/file.vdi> --compact https://unix.stackexchange. <https://unix.stackexchange.com/questions/85865/trim-with-lvm-and-dm-crypt> cat /etc/crypttab issue_discards = 1 sda3_crypt UUID=[...] none luks,discard cat /etc/lvm/lvm.conf # [...] devices { # [ ... ] issue_discards = 1 # [ ... ] } # [...] To test the setup I just did 'sudo fstrim -v /' which resulted in /: [...] bytes were trimmed Doing this again resulted in /: 0 bytes were trimmed which seems to make sense and indicated that TRIM seems to work.However then I did this test: dd if=/dev/urandom of=tempfile count=100 bs=512k oflag=direct Note 'urandom' https://www.virtualbox.org/ <https://www.virtualbox.org/manual/ch08.html#vboxmanage-modifyvdi> 'The --compact option, can be used to compact disk images, i.e. remove blocks that only contains zeroes[and not the output of 'urandom'!!].' 'compacting is currently only available for VDI images. A similar effect can be achieved by zeroing[not urandom!!] out free blocks and then cloning the disk to any other dynamically allocated format.' In my tests I failed to achieve a .vdi compaction, including by cloning. Further tests : File Sizes: rubyv4(debian srv) 8GB virtualdisk System use inside VM 876,928,000 reported by 'ls -l' .vdi size 8,498,708,480 .ova size 8,508,642,304 resize to 20GB using VBoxManage modifyhd ruby4.vdi --resize 20000 Before starting 8,498,708,480 reported as 19.53GB in VB After run and shutdown 8,498,708,480 File Sizes: rubyv6(debian srv) 8GB virtualdisk Debian install zeroing of free disk space halted by escaping the zero procedure System use inside VM 867,948,000 reported by 'ls -l' .vdi size 1,809,842,176 .ova size 1,636,825,000 resize to 20GB using VBoxManage modifyhd ruby6.vdi --resize 20000 Before starting 1,809,842,176 reported as 19.53GB in VB After run and shutdown 1,809,842,176 which is what it should be Conclusions : 1:After installing Debian9 to a large dynamic Virtualbox virtual disk, the .vdi file goes to full size as the disk is zeroed (with random numbers?) and will not compress into the .ova file or clone. 2: Best to escape the Debian install zeroing of free space or use Ubuntu server. 3: If free space zeroing is required, use the dd command in the running server, but it will take the .vdi file up to full size. 4: Dynamic file expansion will negate the zeroing, unless the zeroing is repeated. 5: Virtualbox .vdi file compaction still seems problematic. Recomendation : Add a clear warning in the Debian install process about zeroing free space in large Virtualbox virtual disks. The resulting .vdi file bloat is, for current purposes, irreversible. ####
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--- Begin Message ---Hi, Holger Wansing <hwans...@mailbox.org> wrote: > > I'm closing the reports below. > > That's installation-reports for Debian 7 with > - undefined errors > - problems which are likely to have been fixed in the meantime > - successful installation > > Because of the age, there is no chance to analyse them further and therefore > they are no longer relevant or of any use for current releases: And thank you for filing these installation bug reports, they have been very useful at the time they were filed! If you know, that the issue you reported (and gets closed here) is still existing in recent installation images, please file a new report for that! round 5 (for Debian 7 / 8 / 9 / pre-buster ): https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=706219 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=739299 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=741206 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=742647 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=798896 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=799570 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=805342 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=738865 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=790708 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=804154 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=851429 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=851432 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=851539 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=851740 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=852779 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=853187 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=854087 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=854428 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=854455 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=854857 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=856178 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=857048 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=857179 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=857695 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=857839 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=858139 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=858181 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=858299 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=859233 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=860286 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=860478 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=860809 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=861015 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=861083 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=861380 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=861469 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=862010 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=862025 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=862521 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863178 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863241 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863613 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=864935 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=864991 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=865473 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=865811 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=866240 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=866597 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=866681 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=866966 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=867064 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=867066 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=867285 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=868085 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=868338 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=868942 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=868994 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=869118 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=869895 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=870331 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=871323 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=871569 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=872764 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=874314 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=874385 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=875788 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=876352 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=877467 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=879514 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=879659 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=879688 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=879987 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=880021 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=880054 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=880104 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=880947 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=882732 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=884348 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=885026 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=886023 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=886025 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=886970 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=887670 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=889673 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=889717 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=889993 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=890192 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=890404 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891973 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=892405 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=893432 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=893748 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=894059 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=894169 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=894231 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=894270 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=895700 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=897559 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=899251 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https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=916386 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=917350 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=917940 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=919842 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=921264 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=921861 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=922115 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=923252 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=923524 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=924179 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=924563 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=925537 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=926111 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=926448 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=926538 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=926975 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=926980 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=927811 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=928192 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=928413 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=928414 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=928490 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=929243 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=929476 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=931241 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=931587 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=931918 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=944285 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=944762 -- Holger Wansing <hwans...@mailbox.org> PGP-Fingerprint: 496A C6E8 1442 4B34 8508 3529 59F1 87CA 156E B076
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