1、 Problem description
When using Rsync file transfer, the same two servers transfer the same file. One succeeds and the other reports the following error. It is obvious that there is insufficient memory
[root@sss085080 ~]# rsync -atvu /alauda/new/* /alauda/data/
sending incremental file list
ERROR: out of memory in flist_expand [sender]
rsync error: error allocating core memory buffers (code 22) at util2.c(106) [sender=3.1.2]
ERROR: out of memory in flist_expand [receiver]
rsync error: error allocating core memory buffers (code 22) at util2.c(106) [receiver=3.1.2]2、 Process analysis
Successful server
Failed server
3、 Solution
It can be seen from the above server parameters that the successful server has enabled swap. If the memory is insufficient, swap will be used. However, if the failed server is not enabled, exceptions will be thrown directly when the memory is insufficient. Therefore, in this case, the two solutions are available
1. Turn on swap
2. Expand the memory of the machine
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