确保有足够的磁盘空间用于升级
总结 使用新版本 Junos OS Evolved 升级设备所需的可用磁盘空间量可能因版本而异。检查要安装的软件版本，以确定可用磁盘空间要求，然后清除升级所需的足够磁盘空间。
如果 /soft、 /var 或 /data 目录的容量为 90% 或更多，则设备没有足够存储空间来安装软件包。如果设备上的存储空间不足以安装 Junos OS Evolved，您可能会收到一条警告，类似于以下消息，表明文件系统的可用磁盘空间不足：
WARNING: The /soft filesystem is low on free disk space.
WARNING: This package requires 1075136k free, but there is only 666502k available.
当设备上的系统文件存储空间已满时，重新启动设备无法解决问题。文件存储空间已满后，在设备上执行典型操作期间，将显示以下错误消息： user@host> configure /soft: write failed, filesystem is full
- 要确定设备上的可用磁盘空间量，请发出
show system storage命令。命令输出显示有关设备文件系统中可用磁盘空间量的统计信息。例如：
user@host> show system storage fpc0: -------------------------------------------------------------------------- Filesystem Size Used Avail Capacity Mounted on /dev/root 30M 30M 0 100% /run/initramfs /dev/ram1p2 4.9G 586M 4.0G 13% /soft /dev/ram1p5 93M 19M 68M 22% /data /dev/ram1p7 2.7G 66M 2.4G 3% /var /dev/loop0 379M 2.3M 353M 1% /data/var/external devtmpfs 16G 0 16G 0% /dev [...output truncated...] fpc1: -------------------------------------------------------------------------- Filesystem Size Used Avail Capacity Mounted on /dev/root 30M 30M 0 100% /run/initramfs /dev/ram1p2 4.9G 586M 4.0G 13% /soft /dev/ram1p5 93M 19M 68M 22% /data /dev/ram1p7 2.7G 42M 2.5G 2% /var /dev/loop0 379M 2.3M 353M 1% /data/var/external devtmpfs 16G 0 16G 0% /dev [...output truncated...] re0: -------------------------------------------------------------------------- Filesystem Size Used Avail Capacity Mounted on /dev/root 34M 34M 0 100% /run/initramfs /dev/sda2 32G 10G 21G 34% /soft /dev/sda5 3.0G 179M 2.6G 7% /data /dev/sda7 145G 4.5G 134G 4% /var /dev/loop0 15G 38M 14G 1% /data/var/external devtmpfs 32G 0 32G 0% /dev /tmp 32G 0 32G 0% /run/initramfs/uswitch/tmp /dev/loop1 517M 517M 0 100% /run/initramfs/uswitch/data/hashes/8e6065a478c593473cd390245274128f1a5885e8 /dev/loop2 29M 29M 0 100% /run/initramfs/uswitch/data/hashes/244e2161887b001792709ec078f864c966baca88 /dev/loop3 36M 36M 0 100% /run/initramfs/uswitch/data/hashes/4cad203feb9c1bd4a903f03503a6777509e4031d /dev/loop4 10M 10M 0 100% /run/initramfs/uswitch/data/hashes/5f9454b8d26e33715373f621d16c9c752e3ff57b /dev/loop5 46M 46M 0 100% /run/initramfs/uswitch/data/hashes/182901abd18cefe6f63397bcbb6f2a8238d38a9b /dev/loop6 9.8M 9.8M 0 100% /run/initramfs/uswitch/data/hashes/c08bb2c69ae7ff2446bdcb32011a03a4a53c5585 /dev/loop7 58M 58M 0 100% /run/initramfs/uswitch/data/hashes/c92e70dc394c01bf5a2a9d06ffcc25ba673286d1 /dev/loop8 34M 34M 0 100% /run/initramfs/uswitch/data/hashes/90fdfeec1bab47c19641d636598a4205bbb7949d /dev/loop9 8.2M 8.2M 0 100% /run/initramfs/uswitch/data/hashes/3874cf9fea904b2d5d3f6920671864bdc05130a2 /dev/loop10 34M 34M 0 100% /run/initramfs/uswitch/data/hashes/35afa8ff63aded42bd23444b672dcd33b922898c /dev/loop11 7.0M 7.0M 0 100% /run/initramfs/uswitch/data/hashes/15684de48b2a621a98afaf9619026dd81cdf74bd /dev/loop12 4.5M 4.5M 0 100% /run/initramfs/uswitch/data/hashes/2d75968c5d882c86b38015fc93fe9e148e226407 /dev/loop13 148M 148M 0 100% /run/initramfs/uswitch/data/hashes/ccb0c8af3d4b26bddf9ccc047aa7e76d34e31387 uswitchd 7.0M 7.0M 0 100% /run/initramfs/uswitch/data/junos-evo-install-ptx-x86-64-21.2I20210315015050-EVO__cd-builder/uswitch unionfs 3.0G 186M 2.6G 7% / /dev/sda1 196M 19M 178M 10% /boot /dev/sda6 984M 1.5M 916M 1% /data/config /tmp 32G 68K 32G 1% /tmp tmpfs 32G 28M 32G 1% /run tmpfs 32G 123M 32G 1% /dev/shm tmpfs 32G 0 32G 0% /sys/fs/cgroup tmpfs 6.3G 0 6.3G 0% /run/user/0 re1: -------------------------------------------------------------------------- Filesystem Size Used Avail Capacity Mounted on /dev/root 34M 34M 0 100% /run/initramfs /dev/sda2 32G 10G 21G 34% /soft /dev/sda5 3.0G 321M 2.5G 12% /data /dev/sda7 145G 3.0G 135G 3% /var /dev/loop0 15G 38M 14G 1% /data/var/external devtmpfs 32G 0 32G 0% /dev [...output truncated...]
- 如果设备上的可用磁盘空间不足以安装 Junos OS Evolved，可以通过删除系统文件或不必要的软件映像来清理设备上的文件存储。您可以使用
request system storage cleanuprequest system software delete或操作模式命令，也可以同时使用这两种命令，具体取决于需要清除空间的位置。- 对
request system storage cleanup主 RE 发出操作模式命令，以删除系统中所有 RE 的 /var 目录中的系统文件，通常是系统日志和跟踪文件。要删除的文件列表显示：
user@host> request system storage cleanup List of files to delete: Size Date Name 11B Oct 28 23:40 /var/jail/tmp/alarmd.ts 92.4K Jan 11 17:12 /var/log/chassisd.0.gz 92.4K Jan 11 06:06 /var/log/chassisd.1.gz 92.5K Jan 10 19:00 /var/log/chassisd.2.gz 92.5K Jan 10 07:53 /var/log/chassisd.3.gz 92.2K Jan 10 15:00 /var/log/hostlogs/auth.log.1.gz 92.2K Jan 1 18:45 /var/log/hostlogs/auth.log.2.gz 92.1K Jan 4 17:30 /var/log/hostlogs/auth.log.3.gz 92.2K Jan 1 18:45 /var/log/hostlogs/auth.log.4.gz 79.0K Jan 12 01:59 /var/log/hostlogs/daemon.log.1.gz 78.8K Jan 11 23:15 /var/log/hostlogs/daemon.log.2.gz 78.7K Jan 11 20:30 /var/log/hostlogs/daemon.log.3.gz 79.1K Jan 11 17:44 /var/log/hostlogs/daemon.log.4.gz 59.1K Jan 11 21:59 /var/log/hostlogs/debug.1.gz 59.2K Jan 11 17:44 /var/log/hostlogs/debug.2.gz 59.2K Jan 11 13:29 /var/log/hostlogs/debug.3.gz 59.3K Jan 11 09:14 /var/log/hostlogs/debug.4.gz 186.6K Oct 20 16:31 /var/log/hostlogs/kern.log.1.gz 238.3K Jan 11 23:15 /var/log/hostlogs/lcmd.log.1.gz 238.4K Jan 11 17:30 /var/log/hostlogs/lcmd.log.2.gz 238.6K Jan 11 11:45 /var/log/hostlogs/lcmd.log.3.gz 238.5K Jan 11 06:00 /var/log/hostlogs/lcmd.log.4.gz 372.5K Jan 11 17:00 /var/log/hostlogs/syslog.1.gz 372.5K Jan 11 04:45 /var/log/hostlogs/syslog.2.gz 371.9K Jan 10 16:30 /var/log/hostlogs/syslog.3.gz 372.7K Jan 10 04:15 /var/log/hostlogs/syslog.4.gz 10.1K Jan 12 02:03 /var/log/messages.0.gz 55.1K Jan 6 21:25 /var/log/messages.1.gz 81.5K Dec 1 21:30 /var/log/messages.2.gz Delete these files ? [yes,no] (no)输入选项 yes 以删除文件。
- 必须先使用
show system software list操作模式命令找出设备上存在哪些映像，才能清理系统中所有 RE 的 /soft 和 /data 目录中不必要的软件映像。------------------------------- node: fpc0 ------------------------------- Active boot device is primary: /dev/ram1 List of installed version(s) : '-' running version '>' next boot version after upgrade/downgrade '<' rollback boot version - junos-evo-install-ptx-x86-64-20.4-202103151929.0-EVO - [2021-03-17 12:18:07] ------------------------------- node: re0 ------------------------------- Active boot device is primary: /dev/sda List of installed version(s) : '-' running version '>' next boot version after upgrade/downgrade '<' rollback boot version < junos-evo-install-ptx-x86-64-20.4-202103121629.0-EVO - [2021-03-17 11:22:40] - junos-evo-install-ptx-x86-64-20.4-202103151929.0-EVO - [2021-03-17 10:50:39] junos-evo-install-ptx-x86-64-20.4-202103131143.0-EVO - [2021-03-16 16:12:38] junos-evo-install-ptx-x86-64-20.4-202103141559.0-EVO - [2021-03-15 17:26:42] ------------------------------- node: re1 ------------------------------- Active boot device is primary: /dev/sda List of installed version(s) : '-' running version '>' next boot version after upgrade/downgrade '<' rollback boot version < junos-evo-install-ptx-x86-64-20.4-202103121629.0-EVO - [2021-03-17 11:25:03] - junos-evo-install-ptx-x86-64-20.4-202103151929.0-EVO - [2021-03-17 10:50:39] junos-evo-install-ptx-x86-64-20.4-202103131143.0-EVO - [2021-03-16 16:14:55] junos-evo-install-ptx-x86-64-20.4-202103141559.0-EVO - [2021-03-15 17:57:05]您可以一次删除一个软件映像，也可以删除除当前和回滚映像之外的所有软件映像。这些命令会删除系统中所有 RE 上的映像。
- 要一次删除一个软件映像，请为需要删除的每个映像发出
request system software delete image-name操作模式命令。如果删除此映像，将无法降级到此特定版本的软件。您不能删除当前运行的软件版本。force使用选项删除回滚软件映像。 - 从 Junos OS 演化版 20.4R2 开始，要删除除当前映像和回滚映像以外的所有软件映像，请发出
request system software delete archived操作模式命令。当 RE 上有下一次启动软件映像时，此命令会失败;已安装了新软件映像，但设备尚未重新启动以完成安装过程。user@host-re0> request system software delete archived ALERT: This command will delete all archived SW versions except current and rollback. Do you want to proceed? [yes,no] (no) yes Software delete in progress... re0: Executing Software delete... re0: Cannot delete junos-evo-install-ptx-x86-64-20.4-202103141559.0-EVO - It is the current version re0: Rollback or scratch install re0: Removing version junos-evo-install-ptx-x86-64-20.4-202103150459.0-EVO... re0: Removing version junos-evo-install-ptx-x86-64-20.4-202103111254.0-EVO... re1: Removing version junos-evo-install-ptx-x86-64-20.4-202103150459.0-EVO... re1: Removing version junos-evo-install-ptx-x86-64-20.4-202103111254.0-EVO... Image deletion succeeded.
- 要一次删除一个软件映像，请为需要删除的每个映像发出
- 对