A user reported that GParted would hang at "scanning all devices...",
when a fully working disk was named on the command line, but another
device on the machine was hung.
This can be replicated like this:
(on Ubuntu 20.04 LTS for it's NBD support)
1. Export and import NBD:
# truncate -s 1G /tmp/disk-1G.img
# nbd-server -C /dev/null 9000 /tmp/disk-1G.img
# nbd-client localhost 9000 /dev/nbd0
2. Hang the NBD server and therefore /dev/nbd0:
# killall -STOP nbd-server
3. Run GParted:
$ gparted /dev/sda
Tracing GParted shows that execution of blkid never returns.
# strace -f -tt -q -bexecve -eexecve ./gpartedbin 2>&1 1> /dev/null | fgrep -v ENOENT
...
[pid 37823] 13:56:24.814139 execve("/usr/sbin/mkudffs", ["mkudffs", "--help"], 0x55e2a3f2d230 /* 20 vars */ <detached ...>
[pid 37814] 13:56:24.829246 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=37823, si_uid=0, si_status=1, si_utime=0, si_stime=0} ---
[pid 37825] 13:56:25.376796 execve("/usr/sbin/blkid", ["blkid", "-v"], 0x55e2a3f2d230 /* 20 vars */ <detached ...>
[pid 37824] 13:56:25.380824 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=37825, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
[pid 37826] 13:56:25.402512 execve("/usr/sbin/blkid", ["blkid"], 0x55e2a3f2d230 /* 20 vars */ <detached ...>
Tracking of blkid shows that it hangs on either the open of or first
read from /dev/nbd0.
# strace blkid
...
lstat("/dev", {st_mode=S_IFDIR|0755, st_size=4560, ...}) = 0
lstat("/dev/nbd0", {st_mode=S_IFBLK|0660, st_rdev=makedev(0x2b, 0), ...}) = 0
stat("/dev/nbd0", {st_mode=S_IFBLK|0660, st_rdev=makedev(0x2b, 0), ...}) = 0
lstat("/dev", {st_mode=S_IFDIR|0755, st_size=4560, ...}) = 0
lstat("/dev/nbd0", {st_mode=S_IFBLK|0660, st_rdev=makedev(0x2b, 0), ...}) = 0
access("/dev/nbd0", F_OK) = 0
stat("/dev/nbd0", {st_mode=S_IFBLK|0660, st_rdev=makedev(0x2b, 0), ...}) = 0
openat(AT_FDCWD, "/sys/dev/block/43:0", O_RDONLY|O_CLOEXEC) = 4
openat(4, "dm/uuid", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
close(4) = 0
openat(AT_FDCWD, "/dev/nbd0", O_RDONLY|O_CLOEXEC
Clean up:
1. Resume NBD server:
# killall -CONT nbd-server
2. Delete NBD setup:
# nbd-client -d /dev/nbd0
# killall nbd-server
# rm /tmp/disk-1G.img
Fix this by making GParted specify the whole disk device and partition
names that it is interested in to blkid, rather than letting blkid scan
and report all block devices. Do this both when GParted determines the
devices for itself and when they are named on the command line.
Also update example blkid command output being parsed and cache value
with this change to how blkid is executed.
Closes#131 - GParted hangs when non-named device is hung
GParted already always reads /proc/partitions for whole disk device
names no matter whether it uses whole disk devices named on the command
line, from /proc/partitions or from libparted. As /proc/partitions
lists all the block devices that the kernel knows about, and therefore
all the possible ones blkid could probe, so use it to provide partition
names and device to partition mapping. See code comments for more
details about the assumptions the /proc/partition parsing code makes and
the fact that these are confirmed by examining the Linux kernel source.
This commit just adds debugging to print the existing vector of
validated devices GParted shows in the UI and the vector with all
partitions added, ready for but not yet passed to blkid.
# ./gpartedbin
...
DEBUG: device_paths=["/dev/sda","/dev/sdb"]
DEBUG: device_and_partition_paths=["/dev/sda","/dev/sda1","/dev/sda2","/dev/sdb","/dev/sdb1"]
Also demonstrating that this continues to support named devices,
including file system image files [1].
# truncate -s 256M /tmp/ext4.img
# mkfs.ext4 /tmp/ext4.img
# ./gpartedbin /dev/sda /tmp/ext4.img
...
DEBUG: device_paths=["/dev/sda","/tmp/ext4.img"]
DEBUG: device_and_partition_paths=["/dev/sda","/dev/sda1","/dev/sda2","/tmp/ext4.img"]
[1] e8f0504b13
Make sure that FS_Info cache is loaded for all named paths (#787181)
Closes#131 - GParted hangs when non-named device is hung
Put whole disk device name matching code into a helper function to make
the /proc/partition parsing code easier to understand.
Closes#131 - GParted hangs when non-named device is hung
Now FS_Info::load_cache() and ::load_cache_for_paths() are nearly next
to each other, merge them together to simplify the code a little. This
makes the special case to ensure that file system images named on the
command line were queried by blkid and loaded into the FS_Info cache [1]
become the normal cache loading method. Already passing all discovered
or named devices to load_cache_for_paths() is also a step on the way to
doing it for all devices and partitions of interest.
Just need to ensure that load_cache_for_paths() always loads the cache
as load_cache() did, rather than only when it hadn't already been
loaded. Otherwise GParted will only ever run blkid and load the cache
once at startup and not on each refresh.
[1] e8f0504b13
Make sure that FS_Info cache is loaded for all named paths (#787181)
Closes#131 - GParted hangs when non-named device is hung
PATCHSET OVERVIEW
A user reported that GParted would hang at "scanning all devices...",
when a fully working disk was named on the command line, but another
device on the machine was hung.
This can be replicated like this:
(on Ubuntu 20.04 LTS for it's NBD support)
1. Export and import NBD:
# truncate -s 1G /tmp/disk-1G.img
# nbd-server -C /dev/null 9000 /tmp/disk-1G.img
# nbd-client localhost 9000 /dev/nbd0
2. Hang the NBD server and therefore /dev/nbd0:
# killall -STOP nbd-server
3. Run GParted:
$ gparted /dev/sda
Tracing GParted shows that execution of blkid never returns.
# strace -f -tt -q -bexecve -eexecve /usr/sbin/gpartedbin 2>&1 1> /dev/null | fgrep -v ENOENT
...
[pid 37823] 13:56:24.814139 execve("/usr/sbin/mkudffs", ["mkudffs", "--help"], 0x55e2a3f2d230 /* 20 vars */ <detached ...>
[pid 37814] 13:56:24.829246 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=37823, si_uid=0, si_status=1, si_utime=0, si_stime=0} ---
[pid 37825] 13:56:25.376796 execve("/usr/sbin/blkid", ["blkid", "-v"], 0x55e2a3f2d230 /* 20 vars */ <detached ...>
[pid 37824] 13:56:25.380824 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=37825, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
[pid 37826] 13:56:25.402512 execve("/usr/sbin/blkid", ["blkid"], 0x55e2a3f2d230 /* 20 vars */ <detached ...>
Tracing of blkid shows that it hangs on either the open of or first
read from /dev/nbd0.
# strace blkid
...
lstat("/dev", {st_mode=S_IFDIR|0755, st_size=4560, ...}) = 0
lstat("/dev/nbd0", {st_mode=S_IFBLK|0660, st_rdev=makedev(0x2b, 0), ...}) = 0
stat("/dev/nbd0", {st_mode=S_IFBLK|0660, st_rdev=makedev(0x2b, 0), ...}) = 0
lstat("/dev", {st_mode=S_IFDIR|0755, st_size=4560, ...}) = 0
lstat("/dev/nbd0", {st_mode=S_IFBLK|0660, st_rdev=makedev(0x2b, 0), ...}) = 0
access("/dev/nbd0", F_OK) = 0
stat("/dev/nbd0", {st_mode=S_IFBLK|0660, st_rdev=makedev(0x2b, 0), ...}) = 0
openat(AT_FDCWD, "/sys/dev/block/43:0", O_RDONLY|O_CLOEXEC) = 4
openat(4, "dm/uuid", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
close(4) = 0
openat(AT_FDCWD, "/dev/nbd0", O_RDONLY|O_CLOEXEC
Clean up:
1. Resume NBD server:
# killall -CONT nbd-server
2. Delete NBD setup:
# nbd-client -d /dev/nbd0
# killall nbd-server
# rm /tmp/disk-1G.img
Going to fix this by making GParted specify the device and partition
names that it is interested in to blkid, rather than letting blkid scan
and report all block devices. Do this both when GParted determines the
devices for itself and when they are named on the command line.
THIS PATCH
Move the loading and initialising of caches used during content
discovery to after device and partition discovery and just before
content discovery. Just makes the code ready for the next change.
Closes#131 - GParted hangs when non-named device is hung
Install exfatprogs into the CentOS 7 GitLab CI image, enabling unit
testing of GParted's use of exFAT programs. Exfatprogs is not yet
available for Ubuntu 20.04 as used in the Ubuntu GitLab CI image, only
for Ubuntu 20.10 so far.
Closes!30 - Add exFAT support
Libparted only allows selection of the partition type indirectly by
specifying the type of the file system it will contain [1] and so far
doesn't know about the exFAT file system. Therefore when GParted is
creating a new exFAT partition, it gets the GParted default of 83
(Linux file system) on MBR partition tables.
Example operation details:
Create Primary Partition #1 (exfat, 512.00 MiB) on /dev/sdb
* create empty partition
* clear old file system signatures in /dev/sdb1
* set partition type on /dev/sdb1
new partition type: ext2
* create new exfat file system
fdisk report:
# fdisk -l /dev/sdb
Disk /dev/sdb: 8 GiB, 8589934592 bytes, 16777216 sectors
Disk model: VBOX HARDDISK
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: 0xa2aab629
Device Boot Start End Sectors Size Id Type
/dev/sdb1 2048 1050623 1048576 512M 83 Linux
However the "exFAT file system specification" says:
https://docs.microsoft.com/en-us/windows/win32/fileio/exfat-specification
"10.2 Partition Tables
To ensure interoperability of exFAT volumes in a broad set of usage
scenarios, implementations should use partition type 07h for MBR
partitioned storage and partition GUID
{EBD0A0A2-B9E5-4433-87C0-68B6B72699C7} for GPT partitioned storage.
"
Fix this.
[1] ped_partition_new(..., const PedFileSystemType* fs_type, ...)
https://www.gnu.org/software/parted/api/group__PedPartition.html#g2f94ca75880f9e0c3ce57f7a4b72faf5
ped_partition_set_system(..., const PedFileSystemType* fs_type)
https://www.gnu.org/software/parted/api/group__PedPartition.html#g2f94ca75880f9e0c3ce57f7a4b72faf5Closes!30 - Add exFAT support
With exfatprogs (https://github.com/exfatprogs/exfatprogs) installed the
following operations on exFAT file systems are supported:
- Creation
- Checking
- Labelling
As of the current exfatprogs 1.0.4 the following are not supported:
- Reading usage
- Resizing
- Updating the UUID
Closes!30 - Add exFAT support
On Ubuntu the gparted shell wrapper still attempts to mask lots of
non-block device based file systems. Remove the --quiet option from the
systemctl --runtime mask command to see:
$ gparted
Created symlink /run/systemd/system/snap-gnome\x2d3\x2d34\x2d1804-66.mount -> /dev/null.
Created symlink /run/systemd/system/snap-core-10583.mount -> /dev/null.
Created symlink /run/systemd/system/boot-efi.mount -> /dev/null.
Created symlink /run/systemd/system/snap-gtk\x2dcommon\x2dthemes-1514.mount -> /dev/null.
Created symlink /run/systemd/system/snap-core-10577.mount -> /dev/null.
Created symlink /run/systemd/system/snap-core18-1944.mount -> /dev/null.
Created symlink /run/systemd/system/run-user-1000-doc.mount -> /dev/null.
Created symlink /run/systemd/system/snap-gtk\x2dcommon\x2dthemes-1506.mount -> /dev/null.
Created symlink /run/systemd/system/snap-gnome\x2d3\x2d28\x2d1804-128.mount -> /dev/null.
Created symlink /run/systemd/system/snap-snap\x2dstore-518.mount -> /dev/null.
Created symlink /run/systemd/system/snap-gnome\x2d3\x2d28\x2d1804-145.mount -> /dev/null.
Created symlink /run/systemd/system/snap-core18-1932.mount -> /dev/null.
Created symlink /run/systemd/system/snap-snap\x2dstore-467.mount -> /dev/null.
Created symlink /run/systemd/system/snap-gnome\x2d3\x2d34\x2d1804-60.mount -> /dev/null.
Created symlink /run/systemd/system/-.mount -> /dev/null.
GParted 1.0.0
configuration --enable-libparted-dmraid --enable-online-resize
libparted 3.3
The gparted shell wrapper is currently looking for non-masked Systemd
mount units where the 'What' property starts "/dev/". However Ubuntu
also uses snap packages which are mounted file images via loop devices:
$ grep '^/dev/' /proc/mounts | sort
/dev/fuse /run/user/1000/doc fuse rw,nosuid,nodev,relatime,user_id=1000,group_id=1000 0 0
/dev/loop0 /snap/core/10583 squashfs ro,nodev,relatime 0 0
/dev/loop10 /snap/snap-store/518 squashfs ro,nodev,relatime 0 0
/dev/loop11 /snap/snap-store/467 squashfs ro,nodev,relatime 0 0
/dev/loop12 /snap/gtk-common-themes/1506 squashfs ro,nodev,relatime 0 0
/dev/loop1 /snap/core/10577 squashfs ro,nodev,relatime 0 0
/dev/loop3 /snap/core18/1944 squashfs ro,nodev,relatime 0 0
/dev/loop4 /snap/core18/1932 squashfs ro,nodev,relatime 0 0
/dev/loop5 /snap/gnome-3-34-1804/66 squashfs ro,nodev,relatime 0 0
/dev/loop6 /snap/gnome-3-28-1804/128 squashfs ro,nodev,relatime 0 0
/dev/loop7 /snap/gnome-3-34-1804/60 squashfs ro,nodev,relatime 0 0
/dev/loop8 /snap/gnome-3-28-1804/145 squashfs ro,nodev,relatime 0 0
/dev/loop9 /snap/gtk-common-themes/1514 squashfs ro,nodev,relatime 0 0
/dev/sda1 /boot/efi vfat rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro 0 0
/dev/sda5 / ext4 rw,relatime,errors=remount-ro 0 0
Fix by excluding:
1. Device name "/dev/fuse" because it's a character not a block device
and the mount point is associated with snap,
2. Device names starting "/dev/loop" and where the mount point starts
"/snap/" [1]. This is to allow for use of GParted with explicitly
named loop devices.
[1] The system /snap directory
https://snapcraft.io/docs/system-snap-directoryCloses#129 - Unit \xe2\x97\x8f.service does not exist, proceeding
anyway
The gparted shell wrapper masks Systemd mount units to prevent it
automounting file systems while GParted is running [1], excluding
virtual file system which GParted isn't interested in [2]. The problem
is that there are a lot of virtual file systems and they have changed
between Fedora 19 and 33 so now the exclusion list is out of date.
Run GParted on Fedora 33 and query the mount units while it is running:
$ systemctl list-units -t mount --full --all
UNIT LOAD ACTIVE SUB DESCRIPTION
-.mount loaded active mounted Root Mount
* boot.mount masked active mounted /boot
dev-hugepages.mount loaded active mounted Huge Pages File System
dev-mqueue.mount loaded active mounted POSIX Message Queue File System
* home.mount masked active mounted /home
* proc-fs-nfsd.mount masked inactive dead proc-fs-nfsd.mount
proc-sys-fs-binfmt_misc.mount loaded inactive dead Arbitrary Executable File Formats File System
run-user-1000-gvfs.mount loaded active mounted /run/user/1000/gvfs
* run-user-1000.mount masked active mounted /run/user/1000
* run-user-42.mount masked active mounted /run/user/42
sys-fs-fuse-connections.mount loaded active mounted FUSE Control File System
sys-kernel-config.mount loaded active mounted Kernel Configuration File System
sys-kernel-debug.mount loaded active mounted Kernel Debug File System
* sys-kernel-tracing.mount masked active mounted /sys/kernel/tracing
* sysroot.mount masked inactive dead sysroot.mount
* tmp.mount masked active mounted /tmp
* var-lib-machines.mount masked inactive dead var-lib-machines.mount
* var-lib-nfs-rpc_pipefs.mount masked active mounted /var/lib/nfs/rpc_pipefs
* var.mount masked inactive dead var.mount
LOAD = Reflects whether the unit definition was properly loaded.
ACTIVE = The high-level unit activation state, i.e. generalization of SUB.
SUB = The low-level unit activation state, values depend on unit type.
19 loaded units listed.
To show all installed unit files use 'systemctl list-unit-files'.
So it masked these virtual file systems which didn't need to be masked:
* proc-fs-nfsd.mount masked inactive dead proc-fs-nfsd.mount
* run-user-1000.mount masked active mounted /run/user/1000
* run-user-42.mount masked active mounted /run/user/42
* sys-kernel-tracing.mount masked active mounted /sys/kernel/tracing
* var-lib-machines.mount masked inactive dead var-lib-machines.mount
* var-lib-nfs-rpc_pipefs.mount masked active mounted /var/lib/nfs/rpc_pipefs
Lines from /proc/partitions for some of these virtual file systems:
$ egrep '/run/user|/sys/kernel/tracing|/var/lib/nfs/rpc_pipefs' /proc/mounts
tmpfs /run/user/42 tmpfs rw,seclabel,nosuid,nodev,relatime,size=202656k,nr_inodes=50664,mode=700,uid=42,gid=42,inode64 0 0
tmpfs /run/user/1000 tmpfs rw,seclabel,nosuid,nodev,relatime,size=202656k,nr_inodes=50664,mode=700,uid=1000,gid=1000,inode64 0 0
none /sys/kernel/tracing tracefs rw,seclabel,relatime 0 0
sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw,relatime 0 0
gvfsd-fuse /run/user/1000/gvfs fuse.gvfsd-fuse rw,nosuid,nodev,relatime,user_id=1000,group_id=1000 0 0
And for contrast the lines from /proc/mounts for disk backed file systems:
$ egrep '^/dev/' /proc/mounts
/dev/sda1 /boot ext4 rw,seclabel,relatime 0 0
/dev/sda2 / btrfs rw,seclabel,relatime,space_cache,subvolid=258,subvol=/root 0 0
/dev/sda2 /home btrfs rw,seclabel,relatime,space_cache,subvolid=256,subvol=/home 0 0
Going back to first principles GParted cares that Systemd doesn't
automount file systems on block devices. So instead only mask mount
units which are on block devices. Where the 'What' property starts
"/dev/".
Systemd maintains hundreds of properties for each unit.
$ systemctl show boot.mount | wc -l
221
The properties of interest for all mount units can be queries like this:
$ systemctl show --all --property=What,Id,LoadState '*.mount'
...
What=sunrpc
Id=var-lib-nfs-rpc_pipefs.mount
LoadState=masked
What=/dev/sda1
Id=boot.mount
LoadState=masked
...
[1] 4c109df9b5
Use systemctl runtime mask to prevent automounting (#701676)
[2] 43de8e326a
Do not mask virtual file systems when using systemctl (#708378)
Closes#129 - Unit \xe2\x97\x8f.service does not exist, proceeding
anyway
With Systemd 246 on Fedora 33, running GParted reports this error and no
longer masks the system mount units:
$ gparted
Unit \xe2\x97\x8f.service does not exist, proceeding anyway.
Unit \xe2\x97\x8f.service does not exist, proceeding anyway.
GParted 1.1.0
configuration --enable-libparted-dmraid --enable-online-resize
libparted 3.3
$ systemctl list-units -t mount --full --all --no-legend
-.mount loaded active mounted Root Mount
boot.mount loaded active mounted /boot
dev-hugepages.mount loaded active mounted Huge Pages File System
dev-mqueue.mount loaded active mounted POSIX Message Queue File System
home.mount loaded active mounted /home
proc-fs-nfsd.mount loaded inactive dead NFSD configuration filesystem
proc-sys-fs-binfmt_misc.mount loaded inactive dead Arbitrary Executable File Formats File System
run-user-1000-gvfs.mount loaded active mounted /run/user/1000/gvfs
run-user-1000.mount loaded active mounted /run/user/1000
run-user-42.mount loaded active mounted /run/user/42
sys-fs-fuse-connections.mount loaded active mounted FUSE Control File System
sys-kernel-config.mount loaded active mounted Kernel Configuration File System
sys-kernel-debug.mount loaded active mounted Kernel Debug File System
sys-kernel-tracing.mount loaded active mounted Kernel Trace File System
* sysroot.mount not-found inactive dead sysroot.mount
tmp.mount loaded active mounted Temporary Directory (/tmp)
var-lib-machines.mount loaded inactive dead Virtual Machine and Container Storage (Compatibility)
var-lib-nfs-rpc_pipefs.mount loaded active mounted RPC Pipe File System
* var.mount not-found inactive dead var.mount
^
[Unicode Black Circle character (U+25CF) replaced with star to avoid
making this this commit message Unicode.]
Currently the gparted shell wrapper lists the Systemd mount units and
takes the first space separated column as the unit name. If the LOAD
status of the unit is not "loaded" then Systemd prefixes the name with
an optional Black Circle. Prior to Systemd 246 these extra 2 characters
at the start of the line, including the optional Black Circle, were
suppressed by the --no-legend option, but with Systemd 246 this no
longer happens. As the mount unit names no longer start in the first
character of the line no units are masked. Instead the Unicode Black
Circle character, UTF-8 byte sequence E2 97 8F, is found at the start of
highlighted lines which results in this error:
Unit \xe2\x97\x8f.service does not exist, proceeding anyway.
Fix by adding the --plain option to suppress the optional Black Circle
in the systemctl output. Confirmed this option is available in the
oldest supported distributions with Systemd.
RedHat / CentOS 7 Systemd 219 systemctl has --plain option.
Ubuntu 16.04 LTS Systemd 229 systemctl has --plain option.
Closes#129 - Unit \xe2\x97\x8f.service does not exist, proceeding
anyway
std::vector<> is no longer used in TreeView_Detail.h since this commit
replaced them:
fae909897e
Use PartitionVector class throughout the code (#759726)
Since August 2020, GitLab Continuous Integration test jobs have been
failing on the CentOS 7 image like this from
tests/test_SupportedFileSystems.log:
process 6319: D-Bus library appears to be incorrectly set up; failed to read machine uuid: UUID file '/etc/machine-id' should contain a hex string of length 32, not length 0, with no other text
See the manual page for dbus-uuidgen to correct this issue.
D-Bus not built with -rdynamic so unable to print a backtrace
Running main() from test_SupportedFileSystems.cc
DISPLAY=":99"
/usr/bin/xvfb-run: line 181: 6319 Aborted (core dumped) DISPLAY=:$SERVERNUM XAUTHORITY=$AUTHFILE "$@" 2>&1
Not sure why this has just started failing in the CentOS 7 CI image now,
but the error is widely known [1][2][3][4]. Use
systemd-machine-id-setup to generate a machine ID [5][6]; rather than
dbus-uuidgen [7] as it's designed to integrate into VMs and does the
right thing if a valid machine ID already exists.
[1] Red Hat Bug 598200 - D-Bus library appears to be incorrectly set up;
failed to read machine uuid: UUID file '/var/lib/dbus/machine-id'
https://bugzilla.redhat.com/show_bug.cgi?id=598200
[2] Free Desktop Bug 13194 - When machine-id not found, dbus should not
abort
https://bugs.freedesktop.org/show_bug.cgi?id=13194
[3] D-Bus library appears to be incorrectly set up
https://unix.stackexchange.com/questions/117741/d-bus-library-appears-to-be-incorrectly-set-up
[4] Generate uuid for container
https://xpra.org/trac/wiki/Usage/Docker/CentOS
[5] CentOS / RHEL 7 : How to Change the machine-id
https://www.thegeekdiary.com/centos-rhel-7-how-to-change-the-machine-id/
[6] man systemd-machine-id-setup
https://man7.org/linux/man-pages/man1/systemd-machine-id-setup.1.html
[7] man dbus-uuidgen
https://dbus.freedesktop.org/doc/dbus-uuidgen.1.htmlCloses!62 - Fix CentOS 7 CI test job failures because of zero sized
/etc/machine-id
These PipeCapture unit tests are also failing, preventing the
ubuntu_test CI job passing:
PipeCaptureTest.ReadEmbeddedNULCharacter
PipeCaptureTest.ReadNULByteInMiddleOfMultiByteUTF8Character
These tests are also failing locally in both Ubuntu 20.04 LTS and
Fedora 32 VMs, but not in Ubuntu 18.04 LTS or Fedora 31 VMs. As this is
not specifically a Ubuntu docker image update related issue, temporarily
exclude these failing tests.
Closes!60 - Fix GitLab CI job failures following Ubuntu docker image
updates
Next the Ubuntu image CI job is failing without a C++ compiler like
this:
checking whether to enable maintainer-specific portions of Makefiles... yes
checking for g++... no
checking for c++... no
checking for gpp... no
checking for aCC... no
checking for CC... no
checking for cxx... no
checking for cc++... no
checking for cl.exe... no
checking for FCC... no
checking for KCC... no
checking for RCC... no
checking for xlC_r... no
checking for xlC... no
checking whether the C++ compiler works... no
configure: error: in `/builds/mfleetwo/gparted':
configure: error: C++ compiler cannot create executables
See `config.log' for more details
...
ERROR: Job failed: exit code 1
The published "Ubuntu" docker image has been updated to Ubuntu 20.04 LTS
and must no longer include the build tools by default, or not be a
dependency of any of the other installed packages. Explicitly install
build-essential to get the C++ compiler [1]. Also don't list make as
build-essential includes it.
[1] Installing the GNU C compiler and GNU C++ compiler
https://help.ubuntu.com/community/InstallingCompilersCloses!60 - Fix GitLab CI job failures following Ubuntu docker image
updates
The Ubuntu based GitLab CI jobs have recently started being terminated
after the default 1 hour timeout. Installing / updating packages in the
image is updating the tzdata package which is prompting for input which
it will never receive, hence the hang. The end of output from the job
looks like this:
Setting up tzdata (2020a-0ubuntu0.20.04) ...
debconf: unable to initialize frontend: Dialog
debconf: (TERM is not set, so the dialog frontend is not usable.)
debconf: falling back to frontend: Readline
Configuring tzdata
------------------
Please select the geographic area in which you live. Subsequent configuration
questions will narrow this down by presenting a list of cities, representing
the time zones in which they are located.
1. Africa 4. Australia 7. Atlantic 10. Pacific 13. Etc
2. America 5. Arctic 8. Europe 11. SystemV
3. Antarctica 6. Asia 9. Indian 12. US
Geographic area:
...
ERROR: Job failed: execution took longer than 1h0m0s seconds
This is a well known issue [1][2][3]. Probably occurring now because of
a new release of tzdata not included in the base Ubuntu image we are
using. Fix by telling the underlying dpkg tools this installation is
non-interactive.
[1] Avoiding user interaction with tzdata when installing certbot in a
docker container
https://askubuntu.com/questions/909277/avoiding-user-interaction-with-tzdata-when-installing-certbot-in-a-docker-contai
[2] How to install tzdata on a ubuntu docker image?
https://serverfault.com/questions/949991/how-to-install-tzdata-on-a-ubuntu-docker-image
[3] apt-get install tzdata noninteractive
https://stackoverflow.com/questions/44331836/apt-get-install-tzdata-noninteractiveCloses!60 - Fix GitLab CI job failures following Ubuntu docker image
updates
Mike Fleetwood