[OE-core] [PATCH] initramfs-framework: add nfsrootfs module

[Oleksii Konoplitskyi]

ping


On 15.06.18 18:42, Oleksii Konoplitskyi wrote:
> Hi Andre,
>
>
> Could you, please, check if all the features that we discussed in 
> https://patchwork.openembedded.org/patch/149212/ are implemented in 
> this patch?
>
>
> Best regards,
>
> Oleksii
>
>
> On 25.05.18 16:56, Oleksii Konoplitskyi wrote:
>> nfsrootfs module mounts rootfs via nfs parsing "nfsroot" and "ip" 
>> cmdline options.
>>
>> Signed-off-by: Oleksii Konoplitskyi <okonopli at cisco.com>
>> ---
>>   .../initrdscripts/initramfs-framework/nfsrootfs    | 48 
>> ++++++++++++++++++++++
>>   .../initrdscripts/initramfs-framework_1.0.bb       |  7 ++++
>>   2 files changed, 55 insertions(+)
>>   create mode 100644 
>> meta/recipes-core/initrdscripts/initramfs-framework/nfsrootfs
>>
>> diff --git 
>> a/meta/recipes-core/initrdscripts/initramfs-framework/nfsrootfs 
>> b/meta/recipes-core/initrdscripts/initramfs-framework/nfsrootfs
>> new file mode 100644
>> index 0000000..e67ee4c
>> --- /dev/null
>> +++ b/meta/recipes-core/initrdscripts/initramfs-framework/nfsrootfs
>> @@ -0,0 +1,48 @@
>> +#!/bin/sh
>> +
>> +nfsrootfs_enabled() {
>> +    if [ ${bootparam_root} != "/dev/nfs" ] || [ -z 
>> ${bootparam_nfsroot} ]; then
>> +        return 1
>> +    fi
>> +    return 0
>> +}
>> +
>> +nfsrootfs_run() {
>> +    local nfs_opts
>> +    local location
>> +    local flags
>> +    local server_ip
>> +
>> +    nfs_opts=""
>> +    if [ "${bootparam_nfsroot#*,}" != "${bootparam_nfsroot}" ]; then
>> +        nfs_opts="-o ${bootparam_nfsroot#*,}"
>> +    fi
>> +
>> +    location="${bootparam_nfsroot%%,*}"
>> +    if [ "${location#*:}" = "${location}" ]; then
>> +        # server-ip not given. Get server ip from ip option
>> +        server_ip=""
>> +        if [ "${bootparam_ip#*:}" != "${bootparam_ip}" ]; then
>> +            server_ip=$(echo "$bootparam_ip" | cut -d: -f2)
>> +        fi
>> +
>> +        if [ -z "$server_ip" ]; then
>> +            fatal "Server IP is not set. Update ip or nfsroot options."
>> +        fi
>> +        location=${server_ip}:${location}
>> +    fi
>> +
>> +    flags="-o nolock"
>> +    if [ -n "$bootparam_ro" ] && ! echo "$bootparam_rootflags" | 
>> grep -w -q "ro"; then
>> +        if [  -n "$bootparam_rootflags" ]; then
>> +            bootparam_rootflags="$bootparam_rootflags,"
>> +        fi
>> +        bootparam_rootflags="${bootparam_rootflags}ro"
>> +    fi
>> +    if [ -n "$bootparam_rootflags" ]; then
>> +        flags="$flags -o $bootparam_rootflags"
>> +    fi
>> +
>> +    mount -t nfs ${flags} ${nfs_opts} ${location} ${ROOTFS_DIR}
>> +}
>> +
>> diff --git 
>> a/meta/recipes-core/initrdscripts/initramfs-framework_1.0.bb 
>> b/meta/recipes-core/initrdscripts/initramfs-framework_1.0.bb
>> index 75d965f..6337b99 100644
>> --- a/meta/recipes-core/initrdscripts/initramfs-framework_1.0.bb
>> +++ b/meta/recipes-core/initrdscripts/initramfs-framework_1.0.bb
>> @@ -9,6 +9,7 @@ inherit allarch
>>     SRC_URI = "file://init \
>>              file://exec \
>> +           file://nfsrootfs \
>>              file://rootfs \
>>              file://finish \
>>              file://mdev \
>> @@ -24,6 +25,7 @@ do_install() {
>>         # base
>>       install -m 0755 ${WORKDIR}/init ${D}/init
>> +    install -m 0755 ${WORKDIR}/nfsrootfs ${D}/init.d/85-nfsrootfs
>>       install -m 0755 ${WORKDIR}/rootfs ${D}/init.d/90-rootfs
>>       install -m 0755 ${WORKDIR}/finish ${D}/init.d/99-finish
>>   @@ -53,6 +55,7 @@ PACKAGES = "${PN}-base \
>>               initramfs-module-mdev \
>>               initramfs-module-udev \
>>               initramfs-module-e2fs \
>> +            initramfs-module-nfsrootfs \
>>               initramfs-module-rootfs \
>>               initramfs-module-debug \
>>              "
>> @@ -83,6 +86,10 @@ SUMMARY_initramfs-module-e2fs = "initramfs support 
>> for ext4/ext3/ext2 filesystem
>>   RDEPENDS_initramfs-module-e2fs = "${PN}-base"
>>   FILES_initramfs-module-e2fs = "/init.d/10-e2fs"
>>   +SUMMARY_initramfs-module-nfsrootfs = "initramfs support for 
>> locating and mounting the root partition via nfs"
>> +RDEPENDS_initramfs-module-nfsrootfs = "${PN}-base"
>> +FILES_initramfs-module-nfsrootfs = "/init.d/85-nfsrootfs"
>> +
>>   SUMMARY_initramfs-module-rootfs = "initramfs support for locating 
>> and mounting the root partition"
>>   RDEPENDS_initramfs-module-rootfs = "${PN}-base"
>>   FILES_initramfs-module-rootfs = "/init.d/90-rootfs"
>