89 lines
3.6 KiB
JavaScript
89 lines
3.6 KiB
JavaScript
/**
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* Test fsyncLock functionality
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* - Skip for all storage engines which don't support fsync
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* - Run the fsyncLock command, confirm we lock correctly with currentOp
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* - Confirm that we cannot insert during fsyncLock
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* - Confirm that writes can progress after fsyncUnlock
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* - Confirm that the command can be run repeatedly without breaking things
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* - Confirm that the pseudo commands and eval can perform fsyncLock/Unlock
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*/
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(function() {
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"use strict";
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// Start with a clean DB
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var fsyncLockDB = db.getSisterDB('fsyncLockTestDB');
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fsyncLockDB.dropDatabase();
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// Tests the db.fsyncLock/fsyncUnlock features
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var storageEngine = db.serverStatus().storageEngine.name;
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// As of SERVER-18899 fsyncLock/fsyncUnlock will error when called on a storage engine
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// that does not support the begin/end backup commands.
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var supportsFsync = db.fsyncLock();
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if (!supportsFsync.ok) {
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assert.commandFailedWithCode(supportsFsync, ErrorCodes.CommandNotSupported);
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jsTestLog("Skipping test for " + storageEngine + " as it does not support fsync");
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return;
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}
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db.fsyncUnlock();
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var resFail = fsyncLockDB.runCommand({fsync:1, lock:1});
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// Start with a clean DB
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var fsyncLockDB = db.getSisterDB('fsyncLockTestDB');
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fsyncLockDB.dropDatabase();
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// Test it doesn't work unless invoked against the admin DB
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var resFail = fsyncLockDB.runCommand({fsync:1, lock:1});
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assert(!resFail.ok, "fsyncLock command succeeded against DB other than admin.");
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// Uses admin automatically and locks the server for writes
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var fsyncLockRes = db.fsyncLock();
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assert(fsyncLockRes.ok, "fsyncLock command failed against admin DB");
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assert(db.currentOp().fsyncLock, "Value in db.currentOp incorrect for fsyncLocked server");
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// Make sure writes are blocked. Spawn a write operation in a separate shell and make sure it
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// is blocked. There is really now way to do that currently, so just check that the write didn't
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// go through.
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var writeOpHandle = startParallelShell("db.getSisterDB('fsyncLockTestDB').coll.insert({x:1});");
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sleep(1000);
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// Make sure reads can still run even though there is a pending write and also that the write
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// didn't get through
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assert.eq(0, fsyncLockDB.coll.count({}));
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// Unlock and make sure the insert succeeded
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var fsyncUnlockRes = db.fsyncUnlock();
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assert(fsyncUnlockRes.ok, "fsyncUnlock command failed");
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assert(db.currentOp().fsyncLock == null, "fsyncUnlock is not null in db.currentOp");
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// Make sure the db is unlocked and the initial write made it through.
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writeOpHandle();
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fsyncLockDB.coll.insert({x:2});
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assert.eq(2, fsyncLockDB.coll.count({}));
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// Issue the fsyncLock and fsyncUnlock a second time, to ensure that we can
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// run this command repeatedly with no problems.
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var fsyncLockRes = db.fsyncLock();
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assert(fsyncLockRes.ok, "Second execution of fsyncLock command failed");
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var fsyncUnlockRes = db.fsyncUnlock();
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assert(fsyncUnlockRes.ok, "Second execution of fsyncUnlock command failed");
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// Ensure eval is not allowed to invoke fsyncLock
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assert(!db.eval('db.fsyncLock()').ok, "eval('db.fsyncLock()') should fail.");
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// Check that the fsyncUnlock pseudo-command (a lookup on cmd.$sys.unlock)
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// still has the same effect as a legitimate 'fsyncUnlock' command
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// TODO: remove this in in the release following MongoDB 3.2 when pseudo-commands
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// are removed
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var fsyncCommandRes = db.fsyncLock();
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assert(fsyncLockRes.ok, "fsyncLock command failed against admin DB");
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assert(db.currentOp().fsyncLock, "Value in db.currentOp incorrect for fsyncLocked server");
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var fsyncPseudoCommandRes = db.getSiblingDB("admin").$cmd.sys.unlock.findOne();
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assert(fsyncPseudoCommandRes.ok, "fsyncUnlock pseudo-command failed");
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assert(db.currentOp().fsyncLock == null, "fsyncUnlock is not null in db.currentOp");
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}());
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