Reproducer from scratch:
# download current cloud image
curl -L -O
https://cloud-images.ubuntu.com/daily/server/hirsute/current/hirsute-server-cloudimg-amd64.img
# nothing fancy, just admin:foobar and root:foobar
curl -L -O
https://github.com/cockpit-project/bots/raw/master/machine/cloud-init.iso
# create second disk image for formatting
qemu-img create -f qcow2 disk2.img 100M
# boot it
qemu-system-x86_64 -cpu host -enable-kvm -nographic -m 2048 -drive
file=hirsute-server-cloudimg-amd64.img,if=virtio -snapshot -cdrom
cloud-init.iso -drive file=disk2.img,if=virtio
Log in on the console (root:foobar), then
# sanity check: should be empty
blkid -p /dev/vdb
busctl call org.freedesktop.UDisks2
/org/freedesktop/UDisks2/block_devices/vdb org.freedesktop.UDisks2.Block
Format 'sa{sv}' vfat 0
→ hangs.
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https://bugs.launchpad.net/bugs/1925822
Title:
[21.04 regression] formatting vfat times out
Status in udisks2 package in Ubuntu:
New
Bug description:
There is a regression somewhere between udisks, udev, and dosfstools.
Formatting a device with vfat hangs and fails:
# blkid -p /dev/sda
(nothing)
# busctl call org.freedesktop.UDisks2
/org/freedesktop/UDisks2/block_devices/sda org.freedesktop.UDisks2.Block Format
'sa{sv}' vfat 0
(long pause)
Call failed: Error synchronizing after formatting with type `vfat': Timed out
waiting for object
# blkid -p /dev/sda
/dev/sda: PTUUID="3690494f" PTTYPE="dos"
OTOH, formatting as ext4 works fine:
# wipefs -a /dev/sda; wipefs -a /dev/sda
# busctl call org.freedesktop.UDisks2
/org/freedesktop/UDisks2/block_devices/sda org.freedesktop.UDisks2.Block Format
'sa{sv}' ext4 0
(immediately succeeds)
# blkid -p /dev/sda
/dev/sda: UUID="8bea7475-6af5-4835-86d0-0e5b2cb5500e" VERSION="1.0"
BLOCK_SIZE="4096" TYPE="ext4" USAGE="filesystem"
I tested this to a QEMU emulated disk, but it reproduces equally well
against a `modprobe scsi_debug` device.
Package: udisks2 2.9.2-1
DistroRelease: Ubuntu 21.04
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https://bugs.launchpad.net/ubuntu/+source/udisks2/+bug/1925822/+subscriptions
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