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Message #54670
[Bug 1306677] Re: [PPC64EL] kernel command line gets truncated at 512
** Tags added: trusty
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https://bugs.launchpad.net/bugs/1306677
Title:
[PPC64EL] kernel command line gets truncated at 512
Status in “linux” package in Ubuntu:
Confirmed
Bug description:
Booting the PPC64EL kernel the command line get truncated at 512
characters. This looks to be a hard limit defined in
arch/powerpc/boot/opts.h.
The MaaS project, needs to be able to provide a command line longer
than 512 characters, as iscsi targets and cloud-init parameters are
passed through the kernel command line.
Command line passed to kernel through grub:
nomodeset iscsi_target_name=iqn.2004-05.com.ubuntu:maas:ephemeral-ppc64el-generic-trusty-daily iscsi_target_ip=10.245.71.1 iscsi_target_port=3260 iscsi_initiator=maas-enlist ip=::::maas-enlist:BOOTIF ro root=/dev/disk/by-path/ip-10.245.71.1:3260-iscsi-iqn.2004-05.com.ubuntu:maas:ephemeral-ppc64el-generic-trusty-daily-lun-1 overlayroot=tmpfs cloud-config-url=http://10.245.71.1/MAAS/metadata/latest/enlist-preseed/?op=get_enlist_preseed log_host=10.245.71.1 log_port=514 -- console=hvc0,19200n8 console=hvc1,19200n8 console=ttyS1,19200n8 BOOTIF=01-4a:03:3e:b8:37:66
Command line truncated by the kernel:
BOOT_IMAGE=ppc64el/generic/trusty/daily/boot-kernel nomodeset iscsi_target_name=iqn.2004-05.com.ubuntu:maas:ephemeral-amd64-generic-trusty-daily iscsi_target_ip=10.245.71.1 iscsi_target_port=3260 iscsi_initiator=maas-enlist ip=::::maas-enlist:BOOTIF ro root=/dev/disk/by-path/ip-10.245.71.1:3260-iscsi-iqn.2004-05.com.ubuntu:maas:ephemeral-amd64-generic-trusty-daily-lun-1 overlayroot=tmpfs cloud-config-url=http://10.245.71.1/MAAS/metadata/latest/enlist-preseed/?op=get_enlist_preseed log_host=10.245.71.1 log_
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References