Am 26.02.2018 um 06:46 schrieb wuzhouhui wuzhouhui14@mails.ucas.ac.cn:
-----Original Messages----- From: "Steven Tardy" sjt5atra@gmail.com Sent Time: 2018-02-26 10:48:48 (Monday) To: "CentOS mailing list" centos@centos.org Cc: Subject: Re: [CentOS] How to update modules in iniramfs fastly
On Sun, Feb 25, 2018 at 8:29 PM wuzhouhui wuzhouhui14@mails.ucas.ac.cn wrote:
I know dracut can update modules in initramfs, but I think it is too slow. So I'm wondering what is the fastest way to update modules in initramfs of CentOS 7?
`dracut` calls `mkinitrd` which rebuilds the initrd file. . . you could do it manually but that is prone to errors ( https://access.redhat.com/solutions/24029).
This solution does not work in CentOS 7, because initramfs in CentOS 7 is not a gzipped cpio: [root@bogon a]# file /boot/initramfs-3.10.0-693.el7.x86_64.img /boot/initramfs-3.10.0-693.el7.x86_64.img: ASCII cpio archive (SVR4 with no CRC) If I use zcat /boot/initrd-2.6.18-164.6.1.el5.img | cpio -idmv to uncompress initramfs, it will report errors: [root@bogon a]# zcat /boot/initramfs-3.10.0-693.el7.x86_64.img | cpio -idmv
gzip: /boot/initramfs-3.10.0-693.el7.x86_64.img: not in gzip format cpio: premature end of archive
Maybe some ucode archive is in front of the initrd archive.
Did you try to unpack it without uncompressing it? Whats the contents?
-- LF