bug#42796: closed (partprobe doesn't reload partition information for loop devices when invoked with no options)

[GNU bug Tracking System]

Your message dated Tue, 11 Aug 2020 10:02:47 -0700
with message-id <20200811170247.GE92628@ohop.brianlane.com>
and subject line Re: bug#42796: partprobe doesn't reload partition information 
for loop devices when invoked with no options
has caused the debbugs.gnu.org bug report #42796,
regarding partprobe doesn't reload partition information for loop devices when 
invoked with no options
to be marked as done.

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help-debbugs@gnu.org.)


-- 
42796: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=42796
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> --- Begin Message ---
>
>
>
> Subject: 
>
> partprobe doesn't reload partition information for loop devices when invoked with no options
>
>
>
>
> Date: 
>
> Mon, 10 Aug 2020 08:27:07 +0000
>
>
>
>
> Hello parted developers!
>
> I hope you're well. Steps to reproduce the bug I just found
>
> # script start
> (zpool destroy rootPool1 ; losetup -D ; rm -rf disk* ) &> /dev/null
>
> set -xe
>
> uname -a
> partprobe --version
> zpool --version
>
> fallocate -l 3G disk1
> sgdisk -Z -n1:1M:+1023M -t1:8300 disk1 &> /dev/null
> losetup -Pf disk1
>
> lsblk /dev/loop0
> sgdisk -p /dev/loop0
>
> zpool create -R /mnt rootPool1 /dev/loop0p1
>
> sgdisk -d1 -n1:1M:+2G -t1:8300 /dev/loop0 &> /dev/null
> echo "CORRECT REPORT HERE (2G)"
> sgdisk -p /dev/loop0
> partprobe
>
> echo "INCORRECT REPORT HERE (1G)"
> lsblk /dev/loop0
>
> echo "CORRECT REPORT HERE (2G)"
> partprobe /dev/loop0
> lsblk /dev/loop0
> # script end
>
> # output begin
> + uname -a
> Linux damian 5.7.0-2-cloud-amd64 #1 SMP Debian 5.7.10-1 (2020-07-26) x86_64 
> GNU/Linux
> + partprobe --version
> partprobe (GNU parted) 3.3
> Copyright (C) 2019 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.
>
> Written by <http://git.debian.org/?p=parted/parted.git;a=blob_plain;f=AUTHORS>.
> + zpool --version
> zfs-0.8.4-2
> zfs-kmod-0.8.4-2
> + fallocate -l 3G disk1
> + sgdisk -Z -n1:1M:+1023M -t1:8300 disk1
> + losetup -Pf disk1
> + lsblk /dev/loop0
> NAME      MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
> loop0       7:0    0    3G  0 loop
> └─loop0p1 259:0    0 1023M  0 part
> + sgdisk -p /dev/loop0
> Disk /dev/loop0: 6291456 sectors, 3.0 GiB
> Sector size (logical/physical): 512/512 bytes
> Disk identifier (GUID): 190FB977-371C-4C2C-A180-EB55E188B8E2
> Partition table holds up to 128 entries
> Main partition table begins at sector 2 and ends at sector 33
> First usable sector is 34, last usable sector is 6291422
> Partitions will be aligned on 2048-sector boundaries
> Total free space is 4196285 sectors (2.0 GiB)
>
> Number  Start (sector)    End (sector)  Size       Code  Name
>    1            2048         2097151   1023.0 MiB  8300
> + zpool create -R /mnt rootPool1 /dev/loop0p1
> + sgdisk -d1 -n1:1M:+2G -t1:8300 /dev/loop0
> + echo 'CORRECT REPORT HERE (2G)'
> CORRECT REPORT HERE (2G)
> + sgdisk -p /dev/loop0
> Disk /dev/loop0: 6291456 sectors, 3.0 GiB
> Sector size (logical/physical): 512/512 bytes
> Disk identifier (GUID): 190FB977-371C-4C2C-A180-EB55E188B8E2
> Partition table holds up to 128 entries
> Main partition table begins at sector 2 and ends at sector 33
> First usable sector is 34, last usable sector is 6291422
> Partitions will be aligned on 2048-sector boundaries
> Total free space is 2097085 sectors (1024.0 MiB)
>
> Number  Start (sector)    End (sector)  Size       Code  Name
>    1            2048         4196351   2.0 GiB     8300
> + partprobe
> + echo 'INCORRECT REPORT HERE (1G)'
> INCORRECT REPORT HERE (1G)
> + lsblk /dev/loop0
> NAME      MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
> loop0       7:0    0    3G  0 loop
> └─loop0p1 259:0    0 1023M  0 part
> + echo 'CORRECT REPORT HERE (2G)'
> CORRECT REPORT HERE (2G)
> + partprobe /dev/loop0
> + lsblk /dev/loop0
> NAME      MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
> loop0       7:0    0   3G  0 loop
> └─loop0p1 259:0    0   2G  0 part
> # output end
>
> -- 
> Damian Szuberski
>
>
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#42796: partprobe doesn't reload partition information for loop devices when invoked with no options
>
>
>
>
> Date: 
>
> Tue, 11 Aug 2020 10:02:47 -0700
>
>
>
>
> On Mon, Aug 10, 2020 at 08:27:07AM +0000, Szuberski, Damian (Nokia - 
> HU/Budapest) wrote:
> > Hello parted developers!
> > 
> > I hope you're well. Steps to reproduce the bug I just found
>
> partprobe doesn't include loop devices unless you specify them on the
> cmdline.
>
> It looks to me like sgpart or debian does have a problem though, they
> should be notifying the kernel of the change when you resize the
> partition. If I do the same steps on Fedora, using sgdisk or parted I
> don't need to run partprobe for lsblk to show the updated size.
>
> Brian
>
> -- 
> Brian C. Lane (PST8PDT) - weldr.io - lorax - parted - pykickstart
>
>
>
> --- End Message ---