Bug 2090828

Summary: "Data alignment must not exceed device size." failure when attempting to stack PVs on small virt volumes backed by much larger storage
Product: Red Hat Enterprise Linux 9 Reporter: Corey Marthaler <cmarthal>
Component: lvm2Assignee: Zdenek Kabelac <zkabelac>
lvm2 sub component: Devices, Filtering and Stacking QA Contact: cluster-qe <cluster-qe>
Status: NEW --- Docs Contact:
Severity: low    
Priority: medium CC: agk, heinzm, jbrassow, msnitzer, pasik, prajnoha, zkabelac
Version: 9.1Keywords: Triaged
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
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Clone Of: 1713820 Environment:
Last Closed: Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 1713820    
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Comment 1 Corey Marthaler 2022-05-26 16:07:34 UTC 
In RHEL8 we adjusted our tests to avoid this issue and only create thin LVs/PVs > 230M. Now our tests are once again failing in RHEL9.1 as it appears the 230M minimum has increased to 270M. I'm not really keen on chasing boundary minimums for each release so I figured I'd reopen this bug to get an official response on whether or not we can just remove this test scenario from our regression matrix.

This scenario is to create many random sized virt devices, stack PVs and filesystems on them, and fstrim with fs data verification.

kernel-5.14.0-96.el9    BUILT: Thu May 19 05:31:24 AM CDT 2022
lvm2-2.03.16-1.el9    BUILT: Wed May 18 12:08:33 PM CDT 2022
lvm2-libs-2.03.16-1.el9    BUILT: Wed May 18 12:08:33 PM CDT 2022
device-mapper-1.02.185-1.el9    BUILT: Wed May 18 12:08:33 PM CDT 2022
device-mapper-libs-1.02.185-1.el9    BUILT: Wed May 18 12:08:33 PM CDT 2022



# FAILS
[root@hayes-02 tmp]# lvcreate --yes  -V 240M -T snapper_thinp/POOL -n PV10
  Logical volume "PV10" created.
[root@hayes-02 tmp]# pvcreate --config devices/scan_lvs=1 /dev/snapper_thinp/PV10
  /dev/snapper_thinp/PV10: Data alignment must not exceed device size.
  Format-specific initialisation of physical volume /dev/snapper_thinp/PV10 failed.
  Failed to setup physical volume "/dev/snapper_thinp/PV10".

# FAILS
[root@hayes-02 tmp]# lvcreate --yes  -V 242M -T snapper_thinp/POOL -n PV11
  Rounding up size to full physical extent 244.00 MiB
  Logical volume "PV11" created.
[root@hayes-02 tmp]# pvcreate --config devices/scan_lvs=1 /dev/snapper_thinp/PV11
  /dev/snapper_thinp/PV11: Data alignment must not exceed device size.
  Format-specific initialisation of physical volume /dev/snapper_thinp/PV11 failed.
  Failed to setup physical volume "/dev/snapper_thinp/PV11".

# FAILS
[root@hayes-02 tmp]# lvcreate --yes  -V 250M -T snapper_thinp/POOL -n PV12
  Rounding up size to full physical extent 252.00 MiB
  Logical volume "PV12" created.
[root@hayes-02 tmp]# pvcreate --config devices/scan_lvs=1 /dev/snapper_thinp/PV12
  /dev/snapper_thinp/PV12: Data alignment must not exceed device size.
  Format-specific initialisation of physical volume /dev/snapper_thinp/PV12 failed.
  Failed to setup physical volume "/dev/snapper_thinp/PV12".

# FAILS
[root@hayes-02 tmp]# lvcreate --yes  -V 260M -T snapper_thinp/POOL -n PV13
  Logical volume "PV13" created.
[root@hayes-02 tmp]# pvcreate --config devices/scan_lvs=1 /dev/snapper_thinp/PV13
  /dev/snapper_thinp/PV13: Data alignment must not exceed device size.
  Format-specific initialisation of physical volume /dev/snapper_thinp/PV13 failed.
  Failed to setup physical volume "/dev/snapper_thinp/PV13".

# WORKS
[root@hayes-02 tmp]# lvcreate --yes  -V 270M -T snapper_thinp/POOL -n PV15
  Rounding up size to full physical extent 272.00 MiB
  Logical volume "PV15" created.
[root@hayes-02 tmp]# pvcreate --config devices/scan_lvs=1 /dev/snapper_thinp/PV15
  Physical volume "/dev/snapper_thinp/PV15" successfully created.

# WORKS
[root@hayes-02 tmp]# lvcreate --yes  -V 280M -T snapper_thinp/POOL -n PV14
  Logical volume "PV14" created.
[root@hayes-02 tmp]# pvcreate --config devices/scan_lvs=1 /dev/snapper_thinp/PV14
  Physical volume "/dev/snapper_thinp/PV14" successfully created.