** Changed in: cloud-images
Status: Confirmed => Fix Released
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https://bugs.launchpad.net/bugs/1726818
Title:
vagrant artful64 box filesystem too small
Status in cloud-images:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Artful:
Fix Released
Bug description:
[SRU Justfication, Artful]
[Impact]
Booting the 4.13 Artful kernel with vagrant using VirtualBox trips the
warning:
[ 61.010337] VFS: brelse: Trying to free free buffer
[ 61.114875] ------------[ cut here ]------------
[ 61.114886] WARNING: CPU: 0 PID: 683 at
/build/linux-XO_uEE/linux-4.13.0/fs/buffer.c:1205 __brelse+0x21/0x30
and a failed resize of a partition. The root cause has been bisected
down to the following commmit:
commit c20cfc27a47307e811346f85959cf3cc07ae42f9
Author: Christoph Hellwig <[email protected]>
Date: Wed Apr 5 19:21:07 2017 +0200
block: stop using blkdev_issue_write_same for zeroing
[Fix]
The Upstream commit directly fixes this issue:
commit d5ce4c31d6df518dd8f63bbae20d7423c5018a6c
Author: Ilya Dryomov <[email protected]>
Date: Mon Oct 16 15:59:10 2017 +0200
block: cope with WRITE ZEROES failing in blkdev_issue_zeroout()
..however we also require a backport of the following upstream commit
to apply the above commit cleanly.
commit 425a4dba7953e35ffd096771973add6d2f40d2ed
Author: Ilya Dryomov <[email protected]>
Date: Mon Oct 16 15:59:09 2017 +0200
block: factor out __blkdev_issue_zero_pages()
[Testscase]
On Ubuntu Xenial:
1. sudo apt-get install virtualbox vagrant
2. edit /etc/group and add one's user name to the vboxusers group
3. log out log back
4. vagrant init ubuntu/artful64
5. vagrant up
6. vagrant ssh
7. dmesg | grep "VFS: brelse"
without the fix one will see the VFS brelse warning message and the /
partition will not have been resized.
with a fixed system there is is no VFS vbrelse warning and / as been
resized as expected.
[Regresion potential]
These patches touch the blk library so potentially it could break the block
layer and corrupt data on disk. However these are upstream fixes that address
the buggy commit c20cfc27a47307e811346f85959cf3cc07ae42f9 and are known to
address the bug.
-------------------------------
After building a new vagrant instance using the ubuntu/artful64 box
(v20171023.1.0), the size of the filesystem seems to be much too
small. Here's the output of `df -h` on the newly built instance:
vagrant@ubuntu-artful:~$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 991M 0 991M 0% /dev
tmpfs 200M 3.2M 197M 2% /run
/dev/sda1 2.2G 2.1G 85M 97% /
tmpfs 999M 0 999M 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 999M 0 999M 0% /sys/fs/cgroup
vagrant 210G 182G 28G 87% /vagrant
tmpfs 200M 0 200M 0% /run/user/1000
For comparison, here is the same from the latest zesty64 box:
ubuntu@ubuntu-zesty:~$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 992M 0 992M 0% /dev
tmpfs 200M 3.2M 197M 2% /run
/dev/sda1 9.7G 2.5G 7.3G 26% /
tmpfs 999M 0 999M 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 999M 0 999M 0% /sys/fs/cgroup
vagrant 210G 183G 28G 88% /vagrant
tmpfs 200M 0 200M 0% /run/user/1000
With artful64, the size of /dev/sda1 is reported as 2.2G, which
results in 97% of disk usage immediately after building, even though
the disk size is 10G, as reported by the fdisk:
vagrant@ubuntu-artful:~$ sudo fdisk -l
Disk /dev/sda: 10 GiB, 10737418240 bytes, 20971520 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x4ad77c39
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 20971486 20969439 10G 83 Linux
Disk /dev/sdb: 10 MiB, 10485760 bytes, 20480 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Almost any additional installation results in a "No space left on
device" error.
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