Libvirt - error : virNetSocketReadWire:1808 : End of file while reading data: Input/output error

Fri, 22 Nov 2019 10:28:21 GMT

I am also getting the same error on my nodes, though VMs are working fine. Anybody figure out the reason or fix?

Libvirt - error : virNetSocketReadWire:1808 : End of file while reading data: Input/output error

Tue, 25 Sep 2018 10:05:16 GMT

Hi,

Please open a support ticket.

We will check and update you on your ticket.

Libvirt - error : virNetSocketReadWire:1808 : End of file while reading data: Input/output error

Fri, 07 Sep 2018 11:38:07 GMT

I do have the same issue here on a KVM Host running under Centos7.

Libvirt - error : virNetSocketReadWire:1808 : End of file while reading data: Input/output error

Fri, 24 Aug 2018 12:30:20 GMT

I been doing some research into this error and it appears to be a bug in this virtualizor cron script.

This error seems to occur if libvirt connection object is not deallocated before the script (or process / call inside the script) exits. There seems to be other software solutions which have also come across this.

Virtualizor, please can you dev's look into this further.

Thu, 23 Aug 2018 12:04:03 GMT

Has anyone come across this issue.

Envrionment:
AMD Epyc Processor
64GB RAM
CentOS 7.5
Virtualizor
Linux-kvm

/dev/sdb1 = 2TB SSD with GPT partition set with lvm flag.

Code

# pvdisplay

  --- Physical volume ---

  PV Name               /dev/sdb1

  VG Name               kvmvg

  PV Size               1.86 TiB / not usable 0

  Allocatable           yes

  PE Size               4.00 MiB

  Total PE              488855

  Free PE               483735

  Allocated PE          5120

  PV UUID               rHjOmT-PhY6-W7b7-SPAQ-kEjp-cIZA-qGIfxC

# vgdisplay

  --- Volume group ---

  VG Name               kvmvg

  System ID

  Format                lvm2

  Metadata Areas        1

  Metadata Sequence No  2

  VG Access             read/write

  VG Status             resizable

  MAX LV                0

  Cur LV                1

  Open LV               1

  Max PV                0

  Cur PV                1

  Act PV                1

  VG Size               1.86 TiB

  PE Size               4.00 MiB

  Total PE              488855

  Alloc PE / Size       5120 / 20.00 GiB

  Free  PE / Size       483735 / <1.85 TiB

  VG UUID               GaZyC4-sfDi-Zql3-oJ6j-7c0p-guYH-YI6ppZ

# lvdisplay

  --- Logical volume ---

  LV Path                /dev/kvmvg/vsv1011-dhqwhk57rczjxwag-uuony3jsqpe7zrvc

  LV Name                vsv1011-dhqwhk57rczjxwag-uuony3jsqpe7zrvc

  VG Name                kvmvg

  LV UUID                3muRja-xZnH-PxZL-eUiH-2ymr-35xz-jWU2cj

  LV Write Access        read/write

  LV Creation host, time amd-02, 2018-08-23 13:31:44 +0200

  LV Status              available

  # open                 2

  LV Size                20.00 GiB

  Current LE             5120

  Segments               1

  Allocation             inherit

  Read ahead sectors     auto

  - currently set to     8192

  Block device           253:0

# fdisk -l

WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.

Disk /dev/sdb: 2050.4 GB, 2050408636416 bytes, 4004704368 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk label type: gpt

Disk identifier: DF789DCA-88F3-4828-A66D-B1C857FBD8F2

#         Start          End    Size  Type            Name

 1         2048   4004704255    1.9T  Linux LVM       primary

Disk /dev/mapper/kvmvg-vsv1011--dhqwhk57rczjxwag--uuony3jsqpe7zrvc: 21.5 GB, 21474836480 bytes, 41943040 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk label type: dos

Disk identifier: 0x000b136f

                                                        Device Boot      Start         End      Blocks   Id  System

/dev/mapper/kvmvg-vsv1011--dhqwhk57rczjxwag--uuony3jsqpe7zrvc1   *        2048    39847935    19922944   83  Linux

/dev/mapper/kvmvg-vsv1011--dhqwhk57rczjxwag--uuony3jsqpe7zrvc2        39847936    41943039     1047552   82  Linux swap / Solaris

When the "/usr/local/emps/bin/php /usr/local/virtualizor/scripts/cronm.php" cron runs on a linux-kvm host, we see these errors in the /var/log/messages:

Code

Aug 23 13:40:11 amd-02 libvirtd: 2018-08-23 11:40:11.537+0000: 1428: error : virNetSocketReadWire:1808 : End of file while reading data: Input/output error

Aug 23 13:40:14 amd-02 libvirtd: 2018-08-23 11:40:14.594+0000: 1428: error : virNetSocketReadWire:1808 : End of file while reading data: Input/output error

Strangely enough, we have another Intel E5-2630v4 server that also produces this error, except the code is 1805 and not 1808:

Code

Aug 23 13:48:08 vnode01 libvirtd: 2018-08-23 11:48:08.704+0000: 24948: error : virNetSocketReadWire:1805 : End of file while reading data: Input/output error

Aug 23 13:48:11 vnode01 libvirtd: 2018-08-23 11:48:11.749+0000: 24948: error : virNetSocketReadWire:1805 : End of file while reading data: Input/output error

Has anyone else encountered this?