How to backup standalone instance using vps file from 1 months ago

Ops and Admin
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1

My mongodb data got delete due to a security hole in my vps so all the table got deleted and i dont have any backup from mongodump just have the database data in /data/db from 1 month ago.
So i get that copy of data and cp to the /data/db folder
and run
mongod --dbpath /data/db

But its return these error

{"t":{"$date":"2023-09-20T15:45:32.372+07:00"},"s":"E", "c":"WT", "id":22435, "ctx":"initandlisten","msg":"WiredTiger error message","attr":{"error":0,"message":{"ts_sec":1695199532,"ts_usec":372664,"thread":"2409:0x7fbb2d1b4b80","session_dhandle_name":"file:sizeStorer.wt","session_name":"txn-recover","category":"WT_VERB_DEFAULT","category_id":9,"verbose_level":"ERROR","verbose_level_id":-3,"msg":"__wt_block_read_off:226:sizeStorer.wt: potential hardware corruption, read checksum error for 4096B block at offset 36864: block header checksum of 0x92f4a8c5 doesn't match expected checksum of 0xaba5cd27"}}}

2

Good morning, welcome to the MongoDB community.

Run a repair to try to solve the problem.

mongod --repair --dbpath /data/db

6

Thanks but after i run
here is the log

{"t":{"$date":"2023-09-21T08:42:32.077+07:00"},"s":"W",  "c":"STORAGE",  "id":22302,   "ctx":"initandlisten","msg":"Recovering data from the last clean checkpoint."}
{"t":{"$date":"2023-09-21T08:42:32.077+07:00"},"s":"I",  "c":"STORAGE",  "id":22315,   "ctx":"initandlisten","msg":"Opening WiredTiger","attr":{"config":"create,cache_size=1383M,session_max=33000,eviction=(threads_min=4,threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,remove=true,path=journal,compressor=snappy),builtin_extension_config=(zstd=(compression_level=6)),file_manager=(close_idle_time=600,close_scan_interval=10,close_handle_minimum=2000),statistics_log=(wait=0),json_output=(error,message),verbose=[recovery_progress:1,checkpoint_progress:1,compact_progress:1,backup:0,checkpoint:0,compact:0,evict:0,history_store:0,recovery:0,rts:0,salvage:0,tiered:0,timestamp:0,transaction:0,verify:0,log:0],"}}
{"t":{"$date":"2023-09-21T08:42:33.390+07:00"},"s":"E",  "c":"WT",       "id":22435,   "ctx":"initandlisten","msg":"WiredTiger error message","attr":{"error":21,"message":"[1695260553:390185][1139:0x7f5794b11b80], wiredtiger_open: [WT_VERB_DEFAULT][ERROR]: __posix_open_file, 805: /var/lib/mongo/WiredTiger.turtle: handle-open: open: Is a directory"}}
{"t":{"$date":"2023-09-21T08:42:33.392+07:00"},"s":"E",  "c":"WT",       "id":22435,   "ctx":"initandlisten","msg":"WiredTiger error message","attr":{"error":21,"message":"[1695260553:391825][1139:0x7f5794b11b80], wiredtiger_open: [WT_VERB_DEFAULT][ERROR]: __posix_open_file, 805: /var/lib/mongo/WiredTiger.turtle: handle-open: open: Is a directory"}}
{"t":{"$date":"2023-09-21T08:42:33.393+07:00"},"s":"E",  "c":"WT",       "id":22435,   "ctx":"initandlisten","msg":"WiredTiger error message","attr":{"error":21,"message":"[1695260553:393191][1139:0x7f5794b11b80], wiredtiger_open: [WT_VERB_DEFAULT][ERROR]: __posix_open_file, 805: /var/lib/mongo/WiredTiger.turtle: handle-open: open: Is a directory"}}
{"t":{"$date":"2023-09-21T08:42:33.393+07:00"},"s":"W",  "c":"STORAGE",  "id":22347,   "ctx":"initandlisten","msg":"Failed to start up WiredTiger under any compatibility version. This may be due to an unsupported upgrade or downgrade."}
{"t":{"$date":"2023-09-21T08:42:33.393+07:00"},"s":"F",  "c":"STORAGE",  "id":28595,   "ctx":"initandlisten","msg":"Terminating.","attr":{"reason":"21: Is a directory"}}
{"t":{"$date":"2023-09-21T08:42:33.393+07:00"},"s":"F",  "c":"ASSERT",   "id":23091,   "ctx":"initandlisten","msg":"Fatal assertion","attr":{"msgid":28595,"file":"src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp","line":702}}
{"t":{"$date":"2023-09-21T08:42:33.393+07:00"},"s":"F",  "c":"ASSERT",   "id":23092,   "ctx":"initandlisten","msg":"\n\n***aborting after fassert() failure\n\n"}

I dont know but somehow in my backup my WiredTiger.turtle is a directory and not a file so its make the mongo error

7

Strange, the WiredTiger.turtle file is a metadata file, there is no automated format to retrieve it. Can you do an ls -lrt on the folder and put the result here? Did you give the user permission?

8

Can you list the files within the directory .turtle?