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Diffstat (limited to 'gitlab/issues/target_missing/host_missing/accel_missing/1366.toml')
| -rw-r--r-- | gitlab/issues/target_missing/host_missing/accel_missing/1366.toml | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/gitlab/issues/target_missing/host_missing/accel_missing/1366.toml b/gitlab/issues/target_missing/host_missing/accel_missing/1366.toml deleted file mode 100644 index 6fcbfcfa2..000000000 --- a/gitlab/issues/target_missing/host_missing/accel_missing/1366.toml +++ /dev/null @@ -1,92 +0,0 @@ -id = 1366 -title = "Data inconsistency on LVM logical volume mounted as partition on ubuntu guest, when the written file's size is equal or greater than 27G." -state = "closed" -created_at = "2022-12-15T01:22:29.483Z" -closed_at = "2023-01-04T11:13:40.834Z" -labels = ["Storage"] -url = "https://gitlab.com/qemu-project/qemu/-/issues/1366" -host-os = "Ubuntu 20.04.1" -host-arch = "x86" -qemu-version = "5.0.0" -guest-os = "Ubuntu 22.04" -guest-arch = "x86" -description = """On the guest, writing a 27Gib file or larger result in inconsistent file checksum upon subsequent read.""" -reproduce = """**On the host** - -0. Create a LVM logical volume on a Linux RAID 1 (with 1 disk only) - -``` - --- Logical volume --- - LV Path /dev/davidahw2-vg4/lv0 - LV Name lv0 - VG Name davidahw2-vg4 - LV UUID 5FbDcl-eSDe-7cXL-22tj-Lg6O-79AL-4Gq7gx - LV Write Access read/write - LV Creation host, time davida-hw2, 2021-12-06 16:45:00 +0800 - LV Status available - # open 1 - LV Size <7.28 TiB - Current LE 1907688 - Segments 1 - Allocation inherit - Read ahead sectors auto - - currently set to 256 - Block device 253:4 - - --- Segments --- - Logical extents 0 to 1907687: - Type linear - Physical volume /dev/md4 - Physical extents 0 to 1907687 -``` - -1. Format the logical volume as ext4 - -``` -mkfs -t ext4 /dev/davidahw2-vg4/lv0 -``` - -2. Create a libvirt x86 64bits Ubuntu 22.04 machine mounting a LVM logical volume - -``` -<controller type='scsi' index='1' model='virtio-scsi'><driver queues='8' iothread='2'/></controller> - - -<disk type='block' device='disk'> - <driver name='qemu' type='raw'/> - <source dev='/dev/davidahw2-vg4/lv0'/> - <target dev='sdd' bus='scsi'/> - <blockio logical_block_size='512' physical_block_size='4096'/> - <address type='drive' controller='1' bus='0' target='1' unit='0'/> -</disk> -``` - - -**On the guest** - -3. Mount libvirt/qemu provided block device /dev/sdd as ext4 partition - -``` -mount /dev/sdd /mnt/test -``` - -4. Write **27G file** or larger **on the guest** causing the **2nd checksum to be different** - -``` -sync; head -c 27G </dev/urandom >myfile; sha256sum myfile; sha256sum myfile -8d3b4b263961d2c510390f99879be89b4b9134dc588139ede75573be1590115b myfile -a8e886b3c39d9b4721e582c5e2ca25c76ff6561750ac6dc7aa7e70404661d1cf myfile <== ERROR: Inconsistent checksum -``` - -5. Write **26G file** or larger **on the guest** and **both checksum are the same** - -``` -sync; head -c 26G </dev/urandom >myfile; sha256sum myfile; sha256sum myfile -598ac5da9b5bfa14d0ee664ae2590e09da772cba64cbc83ec049a656223c9401 myfile -598ac5da9b5bfa14d0ee664ae2590e09da772cba64cbc83ec049a656223c9401 myfile <== CORRECT: Consistent checksum -``` - -**Important**: -- With the VM shutdown, the same commands on the same mounted ext4 partition **on the host** has consistent checksum every time for file sizes from 20G to 40G. -- The disk has no sign of failure (no badblocks reported to the filesystem, MD raid reports a healthy raid setup, smart reports on error)""" -additional = """""" |