[SOLVED] Boot not working with ZFS virtual volume

[ventura57]

I am trying to boot a ZFS virtual volume but for a reason that I don't understand it's not working. I can mount using the iscsiadm but not using iPXE.

# iscsiadm -m node -T iqn.2017-03.localdomain.localhost:zd0 -p 192.168.251.4 --login
Logging in to [iface: default, target: iqn.2017-03.localdomain.localhost:zd0,portal: 192.168.251.4,3260] (multiple)
Login to [iface: default, target: iqn.2017-03.localdomain.localhost:zd0,portal: 192.168.251.4,3260] successful.

Below is the log result when I try to use iPXE.
I am using GRUB with the following configuration:

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menuentry 'Netboot iPXE-iscsi' {
insmod gzio
insmod part_msdos
insmod btrfs
set root='hd0,msdos1'
linux16 /@/boot/ipxe.lkrn
initrd16 /@/boot/myscript.ipxe
}
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The script is:

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#!ipxe

set syslog 192.168.251.4
dhcp net1
prompt --key 0x02 --timeout 2000 Press Ctrl-B for the iPXE command line... && shell ||
set initiator-iqn iqn.2005-03.org.open-iscsi:e0b5b56adf72
sanboot iscsi:192.168.251.4::3260:0:iqn.2017-03.localdomain.localhost:zd0

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The syslog result.

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ipxe: Configuring (net1 00:1b:24:fe:07:0a)..... ok
ipxe: Press Ctrl-B for the iPXE command line...
ipxe: iSCSI 0xe99f4 initiator iqn.2005-03.org.open-iscsi:e0b5b56adf72
ipxe: iSCSI 0xe99f4 target 192.168.251.4 iqn.2017-03.localdomain.localhost:zd0
ipxe: iSCSI 0xe99f4 entering security negotiation
ipxe: SCSI 0xe9b44 created for LUN 0000-0000-0000-0000
ipxe: iSCSI 0xe99f4 ignoring TargetPortalGroupTag=1
ipxe: iSCSI 0xe99f4 handling AuthMethod=None
ipxe: iSCSI 0xe99f4 entering operational negotiation
ipxe: iSCSI 0xe99f4 ignoring HeaderDigest=None
ipxe: iSCSI 0xe99f4 ignoring DataDigest=None
ipxe: iSCSI 0xe99f4 ignoring MaxConnections=1
ipxe: iSCSI 0xe99f4 ignoring InitialR2T=Yes
ipxe: iSCSI 0xe99f4 ignoring ImmediateData=No
ipxe: iSCSI 0xe99f4 ignoring MaxBurstLength=262144
ipxe: iSCSI 0xe99f4 ignoring DefaultTime2Wait=2
ipxe: iSCSI 0xe99f4 ignoring DefaultTime2Retain=0
ipxe: iSCSI 0xe99f4 ignoring MaxOutstandingR2T=1
ipxe: iSCSI 0xe99f4 ignoring DataPDUInOrder=Yes
ipxe: iSCSI 0xe99f4 ignoring DataSequenceInOrder=Yes
ipxe: iSCSI 0xe99f4 ignoring ErrorRecoveryLevel=0
ipxe: iSCSI 0xe99f4 entering full feature phase
ipxe: SCSI 0xe9b44 waiting for unit to become ready
ipxe: SCSI 0xe9b44 tag 18ae0002 status 02 sense 70 key 00 additional 2900
ipxe: SCSI 0xe9b44 tag 18ae0002 closed: Input/output error (http://ipxe.org/1d704039)
ipxe: SCSI 0xe9b44 not ready: Input/output error (http://ipxe.org/1d704039)
ipxe: iSCSI 0xe99f4 closed: Input/output error (http://ipxe.org/1d704039)
ipxe: SCSI 0xe9b44 tag 18ae0002 closed: Input/output error (http://ipxe.org/1d704039)
ipxe: assert(((&scsicmd->list))->next->prev == ((&scsicmd->list))) failed at drivers/block/scsi.c line 399
ipxe: assert(((&scsicmd->list))->prev->next == ((&scsicmd->list))) failed at drivers/block/scsi.c line 399
ipxe: Could not open SAN device: Error 0x3f122003 (http://ipxe.org/3f122003)
ipxe: Execution of "<INITRD>" failed: Error 0x3f122003 (http://ipxe.org/3f122003)
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Any help or suggestion is welcome,
Ventura

[ventura57]

I was using TGT iSCSI Target framework that I didn't find in the iSCSI iPXE target list then I decided to replace for LIO on Linux and that fix the problem.

Another thing I learned is that using tcpdump/Wireshark can help a lot. Tcpdump decode iSCSI protocol in a way that is really helpful.


Ventura