一个更永久的修复方法可能是查看/etc/redis/redis.conf中200-250行左右的rdb特性的设置，这不是redis 2中的一部分。x天。

值得注意的是

dir ./

可更改为

dir /home/someuser/redislogfiledirectory

或者您可以注释掉所有保存行，而不用担心持久性。(见/etc/redis/redis.conf中的注释)

还有，别忘了

service redis-server stop
service redis-server start

感谢大家检查这个问题，显然错误是在bgsave期间产生的。

对我来说，在shell中输入config set stop-writes-on-bgsave-error no并重新启动Redis解决了这个问题。

在我绞尽脑汁思考了这么多so问题之后，终于 对我来说，@Axel Advento的回答奏效了，但没有额外的步骤- 我仍然面临许可问题。 我必须切换用户到redis，在它的home目录中创建一个新目录，然后将其设置为redis的目录。

sudo su - redis -s /bin/bash
mkdir redis_dir
redis-cli CONFIG SET dir $(realpath redis_dir)
exit # to logout from redis user (optional)

由于内存不足，bgsave过程中可能会出现错误。试试这个(从redis后台保存FAQ)

echo 'vm.overcommit_memory = 1' >> /etc/sysctl.conf
sysctl vm.overcommit_memory=1

您必须chmod和chown新文件夹

chown -R redis chmod…

此错误是由于BGSAVE失败导致的。在BGSAVE期间，Redis会fork一个子进程来将数据保存到磁盘上。虽然BGSAVE失败的确切原因可以从日志中检查(通常在linux机器上的/var/log/redis/redis-server.log)，但很多时候bgive失败是因为fork不能分配内存。很多时候，由于操作系统的优化冲突，fork无法分配内存(尽管机器有足够的可用RAM)。

可以从Redis常见问题中阅读:

Redis background saving schema relies on the copy-on-write semantic of fork in modern operating systems: Redis forks (creates a child process) that is an exact copy of the parent. The child process dumps the DB on disk and finally exits. In theory the child should use as much memory as the parent being a copy, but actually thanks to the copy-on-write semantic implemented by most modern operating systems the parent and child process will share the common memory pages. A page will be duplicated only when it changes in the child or in the parent. Since in theory all the pages may change while the child process is saving, Linux can't tell in advance how much memory the child will take, so if the overcommit_memory setting is set to zero fork will fail unless there is as much free RAM as required to really duplicate all the parent memory pages, with the result that if you have a Redis dataset of 3 GB and just 2 GB of free memory it will fail. Setting overcommit_memory to 1 says Linux to relax and perform the fork in a more optimistic allocation fashion, and this is indeed what you want for Redis.

Redis不需要像操作系统认为的那样多的内存来写入磁盘，所以可能会预先导致fork失败。

要解决这个问题，您可以:

修改/etc/sysctl.conf，增加:

vm.overcommit_memory=1

然后重新启动sysctl:

在FreeBSD上:

sudo /etc/rc.d/sysctl reload

在Linux上:

sudo sysctl -p /etc/sysctl.conf