This service will be undergoing maintenance at 00:00 UTC, 2016-08-01. It is expected to last about 1 hours
Bug 703479 - in-use partition not detected (dmraid and scsi >=16): potential data loss
in-use partition not detected (dmraid and scsi >=16): potential data loss
Product: Fedora
Classification: Fedora
Component: parted (Show other bugs)
Unspecified Unspecified
unspecified Severity unspecified
: ---
: ---
Assigned To: Brian Lane
Fedora Extras Quality Assurance
Depends On:
Blocks: F15-accepted/F15FinalFreezeExcept
  Show dependency treegraph
Reported: 2011-05-10 09:36 EDT by Jim Meyering
Modified: 2013-03-13 16:41 EDT (History)
5 users (show)

See Also:
Fixed In Version: parted-2.3-8.fc15
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2011-05-14 00:07:50 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:

Attachments (Terms of Use)

  None (edit)
Description Jim Meyering 2011-05-10 09:36:15 EDT
Description of problem: normally parted detects when a partition is in use and prohibits removing or resizing it.  However, when it's a partition on a dmraid disk, or when it's the 16th or larger partition on a scsi disk, parted would *not* detect that it is in use.  Thus, parted would not protect the user from a command that would potentially lead to data loss.

Version-Release number of selected component (if applicable): parted-2.3-7.fc15.x86_64

How reproducible: always

Steps to Reproduce:
1. create a partition table with 16 partitions
2. mount the 16th
3. use parted to remove the 16 partition table entry
Actual results: succeeds

Expected results: parted rejects the attempt to delete an in-use partition

Additional info: Fixed upstream.
patch to fix the bug:
patch to add test to exercise the fix/bug:
Comment 1 James Laska 2011-05-10 11:37:08 EDT
Easy to fix in a post-release update.  Does this impact the user during installation in any way?
Comment 2 Adam Williamson 2011-05-10 12:46:28 EDT
yeah, this doesn't immediately look blocker-worthy to me. Jim, can you explain in more detail why this should be a release blocker? Thanks!

Fedora Bugzappers volunteer triage team
Comment 3 Brian Lane 2011-05-10 13:10:26 EDT
Since the install media is frozen at release I think it would be nice to have this in place before then. I can think of any specific install cases where this would come up, but you know those crazy users... :)
Comment 4 Hans de Goede 2011-05-10 13:15:45 EDT
(In reply to comment #3)
> Since the install media is frozen at release I think it would be nice to have
> this in place before then.

I agree.

> I can think of any specific install cases where this
> would come up, but you know those crazy users... :)

I can make one up for you, system with 17 partitions, boot live cd mount 17th partition and make it busy (cd into the mount point in a shell for example).

Start livecd install, modify 17th partition, ugly stuff happens.

Not really a blocker blocker, but definitely very good to have fixed.
Comment 5 Hans de Goede 2011-05-10 13:16:10 EDT
Or more likely the same with any dmraid partition.
Comment 6 James Laska 2011-05-10 13:31:59 EDT
Based on the corner-case supplied, my opinion based on the current release criteria ...

-1 Blocker, +1 NTH

I'd suggest patching and building an update quickly to ensure NTH is still an option.
Comment 7 Adam Williamson 2011-05-10 13:42:12 EDT
agree with jlaska, i can't see this as a blocker but nth, sure.

Fedora Bugzappers volunteer triage team
Comment 8 Adam Williamson 2011-05-10 14:53:08 EDT
i'm kicking this down to nth to keep the blocker list clean, there's no real chance this would get accepted as blocker with more votes i don't think.

Fedora Bugzappers volunteer triage team
Comment 9 Fedora Update System 2011-05-10 17:07:35 EDT
parted-2.3-8.fc15 has been submitted as an update for Fedora 15.
Comment 10 Fedora Update System 2011-05-11 01:49:00 EDT
Package parted-2.3-8.fc15:
* should fix your issue,
* was pushed to the Fedora 15 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing parted-2.3-8.fc15'
as soon as you are able to.
Please go to the following url:
then log in and leave karma (feedback).
Comment 11 Jim Meyering 2011-05-12 14:00:28 EDT
FYI, I've tested parted-2.3-8.fc15 by running this bourne shell code,
derived from the test I added to parted's test suite:

n_sectors=$((start + n_partitions * partition_sectors + gpt_slop))
sectors_per_MiB=$((1024 * 1024 / ss))
n_MiB=$(((n_sectors + sectors_per_MiB - 1) / sectors_per_MiB))

modprobe scsi_debug dev_size_mb=$n_MiB

# FIXME: CAUTION: you must set scsi_dev here.  Set it to
# the name of the device you've just created, e.g., /dev/sdX
# To see which to use, run dmesg|tail
# scsi_dev=/dev/sdX
parted -s $scsi_dev mklabel gpt

while :; do
    end=$((start + partition_sectors - 1))
    parted -s $scsi_dev mkpart p$i ${start}s ${end}s
    test $i = $n_partitions && break
    start=$((start + partition_sectors))

mkdir m-16

# wait_for_dev_to_appear_ ${scsi_dev}16 || fail_ ${scsi_dev}16 did not appear
# NOTE: you may have to wait a few seconds, here.

mkfs.ext3 -q /dev/sdd16
mount /dev/sdd16 m-16
parted -s $scsi_dev rm 16

# The above exited nonzero, now that it has the fix.
# Here's the required (new) output that I saw:
Error: Partition /dev/sdd16 is being used. You must unmount it before you modify it with Parted.

# cleanup
umount m-16
rmdir m-16
rmmod scsi_debug
Comment 12 Fedora Update System 2011-05-14 00:07:45 EDT
parted-2.3-8.fc15 has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.

Note You need to log in before you can comment on or make changes to this bug.