ISCSI Target + LVM Problem

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Hello,

I have a LVM with 2 ISCSI disk mounted. The partition started presents problem such ” i/o error”. I unmounted the device, and restarted target server in scsi, wich as having some problems. After that i mapped iscsi and trying to mount partition again but:
When i run the pvdisplay i get the following erro:

read failed after 0 of 4096 at 0: Input/output error

And cannot mount partition.

4 thoughts on - ISCSI Target + LVM Problem

  • First the very basic:

    Can you ping the target (iscsi server)?

    Is the target in your iscsi target list: “iscsiadm -m session”?

    —
    Marcelo

    “¿No será acaso que esta vida moderna está teniendo más de moderna que de vida?” (Mafalda)

  • Ok. [Try not to top-post]

    Let’s try to read your disks (replace /dev/sdX with the name of the iscsi disk):

    dd if=/dev/sdX count=1 >/dev/null

    dd if=/dev/sdX count=1024 >/dev/null

    (please, copy the output and error(s))

    —
    Marcelo

    “¿No será acaso que esta vida moderna está teniendo más de moderna que de vida?” (Mafalda)

  • disk):

    I’m using gmail and searching on google i did not find how to not top-post.
    :(
    Sorry i’m new on mailists.

    Thanks for your patience.

    I have 2 Physical volume(in a ISCSI mounting a Volume group. For some reason the server lost communication with iscsi and when it backs the lvm
    “crash” with i/o error. And when i try to remount i ger the error:

    mount: you must specify the filesystem type

    When i run the pvdisplay i get the following erro:

    read failed after 0 of 4096 at 0: Input/output error

    I run commands for boths disks.

    dd if=/dev/sdf count=1 >/dev/null
    1+0 registros de entrada
    1+0 registros de saída
    512 bytes (512 B) copiados, 0,00208968 s, 245 kB/s

    dd if=/dev/sdg count=1 >/dev/null
    1+0 registros de entrada
    1+0 registros de saída
    512 bytes (512 B) copiados, 0,00203979 s, 251 kB/s

    dd if=/dev/sdf count=1024 >/dev/null
    1024+0 registros de entrada
    1024+0 registros de saída
    524288 bytes (524 kB) copiados, 0,0457182 s, 11,5 MB/s

    dd if=/dev/sdg count=1024 >/dev/null
    1024+0 registros de entrada
    1024+0 registros de saída
    524288 bytes (524 kB) copiados, 0,0163593 s, 32,0 MB/s

    But if i run *mkfs* i’ll lost all data?

    2018-03-14 16:35 GMT-03:00 Marcelo Roccasalva < marcelo-CentOS@irrigacion.gov.ar>:

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