【产品名称】ob三节点集群
【产品版本】
【问题描述】关闭集群，将某个节点的home_path进行了unmout操作，然后再mount回来，重新启动集群，启动不了。
[lixiaofei@openstack-node00 oceanbase]$ sudo obd cluster start ckfpxt
Get local repositories and plugins ok
Open ssh connection ok
Load cluster param plugin ok
Check before start observer ok
Check before start obproxy ok
Start observer ok
observer program health check ok
Connect to observer ok
observer need bootstarp x
Start obproxy ok
obproxy program health check ok
Connect to obproxy ok
log2.zip (7042056 KB)
[2022-05-10 11:30:59.700591] ERROR [COMMON] sync_wash_mbs (ob_kvcache_store.cpp:446) [34190][1004][YB420A0A07F0-0005DDB27E05ACD9] [lt=10] [dc=0] can not find enough memory block to wash(ret=-4273, size_washed=0, size_need_washed=2097152) BACKTRACE:0x97b78ce 0x970a211 0x2228026 0x2227c6b 0x22279e3 0x221bb69 0x21fe50e 0x21fda0b 0x95f0559 0x95c4cc1 0x95c47ce 0x95c4550 0x95d5b9d 0x95d59f3 0x95b093b 0x95b04f2 0x22269f6 0x940d721 0x93c7195 0x93e8250 0x93c6f9b 0x9409aea 0x940a6b5 0x586afec 0x586a7e2 0x586de52 0x585e137 0x58cd4f5 0x5855efa 0x91ce221 0x90cb0de 0x90cc6c0 0x90d281a 0x96bb08e 0x71937bb 0x7192cfd 0x718ed9e 0x718e2b6 0x7190e0e 0x2bde104 0x2be0a32 0x95a1975 0x95a06a2 0x959d1cf
看日志应该是没有足够的内存了，还请检查一下内存使用情况
