View Issue Details

IDProjectCategoryView StatusLast Update
0000634AlmaLinux-10Generalpublic2026-06-18 10:13
Reportervikidia Assigned To 
PriorityhighSeveritycrashReproducibilityrandom
Status newResolutionopen 
Summary0000634: Disk I/O issue in Proxmox VM (Aborted Command) + XFS shut down
DescriptionFollowing this thread : https://forum.proxmox.com/threads/io_uring-on-kernel-7-0-6-2-pve-pve-9-2-3-guest-disk-i-o-errors-eio-filesystem-xfs-shutdown.184360/

I discovered a strange behavior on AlmaLinux 10 inside a Proxmox VM. It appears that kernel 6.12.0-211.22.1.el10_2.x86_64 has issue that triggers a disk failure (see screenshots).

Randomly, the filesystem (XFS) becomes unavailable and I can't do anything more except stop and start the VM again.

I don't know if it's related to the storage architecture on Proxmox but I'm using LUKS + LVM-thin on 2 different hosts that are impacted.

Here is the way I was able to reproduce :

root@zabbix :~$ fio --name=stress-write --ioengine=libaio --iodepth=64 --rw=randwrite \
    --bs=4k --direct=1 --size=20G --numjobs=8 --runtime=600 \
    --time_based --ramp_time=30 --group_reporting \
    --filename=/tmp/fio-test --output-format=normal,json \
    --output=fio-result.json
Jobs: 8 (f=0): [/(8)][-.-%][eta 10m:15s]
Jobs: 8 (f=0): [/(8)][-.-%][eta 10m:15s]
Jobs: 8 (f=0): [/(8)][-.-%][eta 10m:14s]
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=20592291840, buflen=4096
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=9765498880, buflen=4096
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=11389923328, buflen=4096
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=10865082368, buflen=4096
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=4592693248, buflen=4096
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=17240551424, buflen=4096
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=10608463872, buflen=4096
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=18193764352, buflen=4096
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=10405310464, buflen=4096
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=18420568064, buflen=4096
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=20068622336, buflen=4096
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=14732562432, buflen=4096
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=19714949120, buflen=4096
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=11894398976, buflen=4096
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=13342396416, buflen=4096
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=18269777920, buflen=4096
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=21153767424, buflen=4096
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=8210624512, buflen=4096
fio: io_u error on file /tmp/fio-test: Input/output error: write offset=5009162240, buflen=4096



Steps To ReproduceUse last proxmox version (kernel 7.0.6-2-pve + PVE 9.2.3)
Maybe use LUKS and LVM-thin as storage type for the VM
Install AlmaLinux 10 with XFS and kernel 6.12.0-211.22.1.el10_2.x86_64 (in a VM)
Do a FIO stress write test : fio --name=stress-write --ioengine=libaio --iodepth=64 --rw=randwrite --bs=4k --direct=1 --size=20G --numjobs=8 --runtime=600 --time_based --ramp_time=30 --group_reporting --filename=/tmp/fio-test --output-format=normal,json --output=fio-result.json
Tagsdisk, I/O failure, LVM-thin, Proxmox, VM, xfs
Attached Files
image.png (770,599 bytes)
image-2.png (142,498 bytes)   
image-2.png (142,498 bytes)   
image-3.png (75,199 bytes)   
image-3.png (75,199 bytes)   

Activities

vikidia

2026-06-18 09:51

reporter   ~0001223

No issue in logs found in Proxmox hypervisor physical hosts. The issue appears in 2 different Proxmox hosts. The AlmaLinux kernel 6.12.0-124.52.1.el10_1.x86_64 does not seem to be impacted,

vikidia

2026-06-18 10:13

reporter   ~0001224

This command also triggers the problem :
fio --name=stress-hdd --ioengine=libaio --iodepth=8 --rw=randwrite \
    --bs=4k --direct=1 --fdatasync=8 --size=20G --numjobs=4 \
    --runtime=1800 --time_based --ramp_time=30 --group_reporting \
    --filename=/tmp/fio-test --output-format=normal,json \
    --output=fio-result.json

Issue History

Date Modified Username Field Change
2026-06-18 09:47 vikidia New Issue
2026-06-18 09:47 vikidia Tag Attached: xfs
2026-06-18 09:47 vikidia File Added: image.png
2026-06-18 09:47 vikidia File Added: image-2.png
2026-06-18 09:47 vikidia File Added: image-3.png
2026-06-18 09:49 vikidia Tag Attached: disk
2026-06-18 09:49 vikidia Tag Attached: I/O failure
2026-06-18 09:49 vikidia Tag Attached: VM
2026-06-18 09:49 vikidia Tag Attached: Proxmox
2026-06-18 09:49 vikidia Tag Attached: LVM-thin
2026-06-18 09:51 vikidia Note Added: 0001223
2026-06-18 10:13 vikidia Note Added: 0001224