我们已经实现了MongoDB主从复制，数据库被删除了。
我们使用extundelete命令从Mongo数据目录恢复了已删除的文件。
Undelete Blog https://github.com/RIKSOF/development/wiki/Restoring-deleted-files-on-Linux
我们想要恢复至少一个我们获得WT（有线计时器）文件的集合。我们正在尝试使用以下命令恢复该文件，并且我们收到以下错误
Recovering a WiredTiger collection from a corrupt MongoDB installation
wget http://source.wiredtiger.com/releases/wiredtiger-2.7.0.tar.bz2
tar xvf wiredtiger-2.7.0.tar.bz2
cd wiredtiger-2.7.0
sudo apt-get install libsnappy-dev build-essential
./configure --enable-snappy
make
./wt -v -h ../mongo-bak -C "extensions=[./ext/compressors/snappy/.libs/libwiredtiger_snappy.so]" -R salvage collection-2657--1723320556100349955.wt
错误 -
./wt -v -h ../mongo-bak -C "extensions=[./ext/compressors/snappy/.libs/libwiredtiger_snappy.so]" -R salvage collection-246--7553069514495955510.wt
[1488888117:36780][13536:0x7f7b633cd740], file:WiredTiger.wt, connection: read checksum error for 4096B block at offset 12288: block header checksum of 1955562709 doesn't match expected checksum of 3146787951
[1488888117:36809][13536:0x7f7b633cd740], file:WiredTiger.wt, connection: WiredTiger.wt: encountered an illegal file format or internal value
[1488888117:36817][13536:0x7f7b633cd740], file:WiredTiger.wt, connection: the process must exit and restart: WT_PANIC: WiredTiger library panic
lt-wt: WT_PANIC: WiredTiger library panic
答案 0 :(得分：0)
根据SERVER-31076错误报告，这可能与损坏的.wt个文件（例如WiredTiger.wt / WiredTiger.turtle）有关。
尝试通过以下命令在所有数据库上运行修复：
mongod --repair --dbpath /path/to/data/db
还要确保所有data/db个文件都具有正确的读写权限。
答案 1 :(得分：0)
就我而言，我已经从Time Machine中恢复了mac。我通过brew install安装了mongodb。当我启动mongo时，该服务无法正常启动。
vi /usr/local/var/log/mongodb/mongo.log
enter code here
2020-01-30T17:06:10.655-0500 E STORAGE [initandlisten] WiredTiger error (0) [1580421970:655376][62181:0x112233dc0], file:WiredTiger.wt, connection: __wt_block_read_off, 283: WiredTiger.wt: read checksum error for 4096B block at offset 12288: block header checksum of 0x325e318 doesn't match expected checksum of 0x65ef0e12 Raw: [1580421970:655376][62181:0x112233dc0], file:WiredTiger.wt, connection: __wt_block_read_off, 283: WiredTiger.wt: read checksum error for 4096B block at offset 12288: block header checksum of 0x325e318 doesn't match expected checksum of 0x65ef0e12
我看到的是由于损坏的mongodb集合。 因此，我为brew安装运行了cleanup命令，该命令将数据库放置在其他位置。
mongod --repair --dbpath /usr/local/var/mongodb
2020-01-30T17:06:11.741-0500 I STORAGE [initandlisten] Verify failed on uri table:collection-12--8361386101775862971. Running a salvage operation.
2020-01-30T17:06:11.745-0500 I STORAGE [initandlisten] Repairing collection wlchat.jobs
2020-01-30T17:06:11.765-0500 I STORAGE [initandlisten] WiredTiger progress WT_SESSION.verify 100
2020-01-30T17:06:11.769-0500 I STORAGE [initandlisten] WiredTiger progress WT_SESSION.verify 200
2020-01-30T17:06:11.774-0500 I STORAGE [initandlisten] WiredTiger progress WT_SESSION.verify 300
2020-01-30T17:06:11.783-0500 I STORAGE [initandlisten] WiredTiger progress WT_SESSION.verify 400
2020-01-30T17:06:11.789-0500 I STORAGE [initandlisten] WiredTiger progress WT_SESSION.verify 500
2020-01-30T17:06:11.793-0500 I STORAGE [initandlisten] WiredTiger progress WT_SESSION.verify 600
2020-01-30T17:06:11.795-0500 I STORAGE [initandlisten] Verify succeeded on uri table:collection-10--8361386101775862971. Not salvaging.
2020-01-30T17:06:11.795-0500 I STORAGE [initandlisten] Repairing collection wlchat.SovrenJobs
2020-01-30T17:06:11.801-0500 I STORAGE [initandlisten] Verify succeeded on uri table:collection-0-8794251073515214768. Not salvaging.
2020-01-30T17:06:11.814-0500 I INDEX [initandlisten] index build: starting on wlchat.users properties: { v: 2, key: { _id: 1 }, name: "_id_", ns: "wlchat.users" } using method: Foreground
并重新启动mongodb-community
brew services restart mongodb-community.
==> Successfully started `mongodb-community` (label: homebrew.mxcl.mongodb-community)
一切恢复正常。