Running an upgrade from Stretch to Testing in a chroot grub-probe
appears to be stuck:
root 6373 4864 0 12:56 ? 00:00:04 \_ sshd: root@notty
root 6382 6373 0 12:56 ? 00:00:05 \_ xterm
root 6385 6382 0 12:56 pts/0 00:00:00 \_ bash
root 6386 6385 0 12:56 pts/0 00:00:00 \_ /bin/bash bin/syschroot /mnt
root 6399 6386 0 12:56 pts/0 00:00:00 \_ /bin/bash -i
root 6485 6399 2 12:59 pts/0 00:00:59 \_ aptitude
root 28592 6485 1 13:40 pts/2 00:00:03 \_ /usr/bin/dpkg --status-fd 36 --no-triggers --configure --pending
root 31456 28592 0 13:40 pts/2 00:00:00 \_ /usr/bin/perl -w /usr/share/debconf/frontend /var/lib/dpkg/info/mdadm.postinst configure 3.4-4+b1
root 31467 31456 0 13:40 pts/2 00:00:00 \_ /bin/sh /var/lib/dpkg/info/mdadm.postinst configure 3.4-4+b1
root 31475 31467 0 13:40 pts/2 00:00:00 \_ /bin/sh /usr/sbin/grub-mkconfig -o /boot/grub/grub.cfg
root 31481 31475 0 13:40 pts/2 00:00:00 \_ /bin/sh /usr/sbin/grub-mkconfig -o /boot/grub/grub.cfg
root 31482 31481 0 13:40 pts/2 00:00:00 \_ /usr/sbin/grub-probe --device /dev/mapper/vg00-buster --target=fs_uuid
root 31537 31482 0 13:43 pts/2 00:00:00 \_ vgs --options vg_uuid,pv_name --noheadings --separator :
root@ppcl003:~# chroot /mnt lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
nvme0n1 259:0 0 238.5G 0 disk
|-nvme0n1p1 259:1 0 1023M 0 part /boot
`-nvme0n1p2 259:2 0 237.5G 0 part
`-pv00 253:0 0 237.5G 0 crypt
|-vg00-root 253:1 0 32G 0 lvm
|-vg00-swap 253:2 0 16G 0 lvm [SWAP]
|-vg00-buster 253:3 0 32G 0 lvm /
`-vg00-export 253:4 0 157.5G 0 lvm
root@ppcl003:~# chroot /mnt df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/vg00-buster 32765712 22985784 8085824 74% /
tmpfs 131072 0 131072 0% /tmp
tmpfs 131072 4 131068 1% /run
udev 8016924 0 8016924 0% /dev
/dev/nvme0n1p1 1014680 52336 893584 6% /boot
It is still working, but it is *horrible* slow.
Do you think this could be improved? The same procedure worked
fine for Jessie --> Stretch.
Regards
Harri
:
access("/sys/devices/pci0000:00/0000:00:1d.2/0000:40:00.0/nvme/nvme0/nvme0n1/uevent", F_OK) = 0
readlinkat(AT_FDCWD, "/sys/devices/pci0000:00/0000:00:1d.2/0000:40:00.0/nvme/nvme0/nvme0n1/subsystem", "../../../../../../../class/block", 4096) = 32
openat(AT_FDCWD, "/sys/devices/pci0000:00/0000:00:1d.2/0000:40:00.0/nvme/nvme0/nvme0n1/uevent", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=4096, ...}) = 0
fstat(3, {st_mode=S_IFREG|0644, st_size=4096, ...}) = 0
read(3, "MAJOR=259\nMINOR=0\nDEVNAME=nvme0n"..., 4096) = 47
read(3, "", 4096) = 0
close(3) = 0
openat(AT_FDCWD, "/run/udev/data/b259:0", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
:
/mnt/usr/sbin/policy-rc.d is set, of course:
# cat /mnt/usr/sbin/policy-rc.d
#!/bin/sh
exit 101
: : Setting up mdadm (4.1-1) ... update-initramfs: deferring update (trigger activated) Generating grub configuration file ... File descriptor 3 (pipe:[145329]) leaked on vgs invocation. Parent PID 31909: /usr/sbin/grub-probe File descriptor 12 (/dev/pts/2) leaked on vgs invocation. Parent PID 31909: /usr/sbin/grub-probe WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. /dev/sda: open failed: No medium found WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. File descriptor 3 (pipe:[145329]) leaked on vgs invocation. Parent PID 31909: /usr/sbin/grub-probe File descriptor 12 (/dev/pts/2) leaked on vgs invocation. Parent PID 31909: /usr/sbin/grub-probe WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. /dev/sda: open failed: No medium found WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. File descriptor 3 (pipe:[145329]) leaked on vgs invocation. Parent PID 32160: /usr/sbin/grub-probe File descriptor 12 (/dev/pts/2) leaked on vgs invocation. Parent PID 32160: /usr/sbin/grub-probe WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. /dev/sda: open failed: No medium found WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. File descriptor 3 (pipe:[145329]) leaked on vgs invocation. Parent PID 32160: /usr/sbin/grub-probe File descriptor 12 (/dev/pts/2) leaked on vgs invocation. Parent PID 32160: /usr/sbin/grub-probe WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. /dev/sda: open failed: No medium found WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. File descriptor 3 (pipe:[145329]) leaked on vgs invocation. Parent PID 32368: /usr/sbin/grub-probe File descriptor 12 (/dev/pts/2) leaked on vgs invocation. Parent PID 32368: /usr/sbin/grub-probe WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. /dev/sda: open failed: No medium found WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. File descriptor 3 (pipe:[145329]) leaked on vgs invocation. Parent PID 32368: /usr/sbin/grub-probe File descriptor 12 (/dev/pts/2) leaked on vgs invocation. Parent PID 32368: /usr/sbin/grub-probe WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. /dev/sda: open failed: No medium found WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. Found linux image: /boot/vmlinuz-4.19.0-2-amd64 Found linux image: /boot/vmlinuz-4.9.0-8-amd64 Found initrd image: /boot/initrd.img-4.9.0-8-amd64 File descriptor 3 (pipe:[145329]) leaked on vgs invocation. Parent PID 552: /usr/sbin/grub-probe File descriptor 12 (/dev/pts/2) leaked on vgs invocation. Parent PID 552: /usr/sbin/grub-probe WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. /dev/sda: open failed: No medium found WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. File descriptor 3 (pipe:[145329]) leaked on vgs invocation. Parent PID 552: /usr/sbin/grub-probe File descriptor 12 (/dev/pts/2) leaked on vgs invocation. Parent PID 552: /usr/sbin/grub-probe WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. /dev/sda: open failed: No medium found WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. Found memtest86+ image: /memtest86+.bin Found memtest86+ multiboot image: /memtest86+_multiboot.bin WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. /dev/sda: open failed: No medium found WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. File descriptor 3 (pipe:[145329]) leaked on vgs invocation. Parent PID 996: grub-probe File descriptor 12 (/mnt/dev/pts/2) leaked on vgs invocation. Parent PID 996: grub-probe WARNING: Device /dev/nvme0n1 not initialized in udev database even after waiting 10000000 microseconds. /dev/sda: open failed: No medium found WARNING: Device /dev/mapper/pv00 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p1 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/root not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/nvme0n1p2 not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/swap not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/buster not initialized in udev database even after waiting 10000000 microseconds. WARNING: Device /dev/vg00/export not initialized in udev database even after waiting 10000000 microseconds. : : Wouldn't it be reasonable to cache this somehow? Regards Harri
contains no timing data. Would it be possible to get the full grub-probe.trace file resulting from running this in the chroot? strace -f -tt -s 1024 -o grub-probe.trace /usr/sbin/grub-probe --device /dev/mapper/vg00-buster --target=fs_uuid
Attached you can find the output of strace -f -o /tmp/strace.log.txt -ttt -T vgs --options vg_uuid,pv_name --noheadings --separator : run in the chroot. Apparently thats the part that gets extremely slow. Hope this helps Harri
Sorry, I should have read your EMail more carefully. Attached you can find the requested trace file. Hope this helps Harri
While I agree that that's slow, I'd prefer it if you gave me the thing I asked for if at all possible, since you were also complaining about lack of caching. I can always select out the bit that I need to look at, but it's harder if I don't have the information to start with. After all, if it's just a matter of vgs being slow, then this isn't a GRUB bug at all, no?
I apologize again for not sending the log file you asked for right from the start. Hopefully you found the second strace log file? Of course it is vgs that got slow somehow, but AFAICS it is called about 16 times for each grub-mkconfig, even though there are only 4 logical volumes. Grub-mkconfig was run at least 4 times during the upgrade from Stretch to Buster (then I went home, hoping that it is finished tomorrow morning). Sorry to say, but something got worse with Buster here. If you come to the conclusion that it is not a problem of grub, then please feel free to reassign this bug report. Regards Harri
lvm2 is version 2.03.02-2
Control: reassign -1 lvm2 Control: forcemerge 918590 -1 Indeed - looks like our emails crossed in the post there. Thanks for the details. I tracked this down and it seems to be pretty much the same as #918590. (It's true that grub_util_pull_lvm_by_command could perhaps use some caching, but it's quite cumbersome to arrange that, and given that vgs is taking *minutes* to run I think putting effort into the difference between extremely slow and merely very slow is not all that exciting, versus fixing the bug at its root.) I think you should find that a good workaround is to mount /run in the chroot. This is normally a good idea anyway if you're doing anything complicated in the chroot. Regards,
Hi Colin, sorry for the delay. I am not sure if this is a good idea. /run contains all the pid files and named pipes, exposing external data and ipc to the chroot. Its *much* more than just udev. /usr/sbin/policy-rc.d has been set to 101, of course, but in the past this has been ignored by some buggy startup scripts. I really would like to avoid that some code in the chroot affects the host system in any way. Regards Harri
Any news about this? How comes this wasn't an issue for Jessie? Regards Harri
I’m trying to install the Luks encrypted buster from in memory Alpine Linux chroot. This issue blocks my adventure. It looks redhat had patched ( https://bugzilla.redhat.com/show_bug.cgi?id=1676612 ). I’m looking forward Debian communities response quickly for this critical bug. Guest/Container environment should be treated as high priorities when allocated bug fix resource. Thanks for your quick support. Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
I can confirm that mounting /run in the chroot significantly speeds up `update-grub' as well as lvm scan commands. I'm bootstrapping a new virtual machine from a live disk and `update-grub` was running in the chroot. In a separate terminal, I entered the following command and `update-grub` finished nearly instantly: $ sudo mount --bind /run /mnt/target/run This is not a solution to the bug, but it's certainly a viable workaround.
workaround. In my case it was sufficient as workaround to bind mount /run/udev rather than the whole of /run. lvdisplay went from 6m41s to 152ms! And update-grub doesn't 'hang' for hours.
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