The following pull request was submitted through Github. It can be accessed and reviewed at: https://github.com/lxc/lxd/pull/6212
This e-mail was sent by the LXC bot, direct replies will not reach the author unless they happen to be subscribed to this list. === Description (from pull-request) === The above bug causes dqlite to crash when a read query issued during a big transaction triggers a page cache spill. The value of 50M should be enough for most users until we fix this in dqlite. Signed-off-by: Free Ekanayaka <free.ekanay...@canonical.com>
From 689cca71b6245c5a7457375dbbe196cfbaadfb2e Mon Sep 17 00:00:00 2001 From: Free Ekanayaka <free.ekanay...@canonical.com> Date: Mon, 16 Sep 2019 17:08:31 +0200 Subject: [PATCH] Band aid for https://github.com/canonical/dqlite/issues/163 The above bug causes dqlite to crash when a read query issued during a big transaction triggers a page cache spill. The value of 50M should be enough for most users until we fix this in dqlite. Signed-off-by: Free Ekanayaka <free.ekanay...@canonical.com> --- lxd/db/db.go | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/lxd/db/db.go b/lxd/db/db.go index feec9af821..40fd7ad876 100644 --- a/lxd/db/db.go +++ b/lxd/db/db.go @@ -213,6 +213,12 @@ func OpenCluster(name string, store driver.NodeStore, address, dir string, timeo } } + // FIXME: https://github.com/canonical/dqlite/issues/163 + _, err = db.Exec("PRAGMA cache_size=-50000") + if err != nil { + return nil, errors.Wrap(err, "Failed to set page cache size") + } + if dump != nil { logger.Infof("Migrating data from local to global database") err := query.Transaction(db, func(tx *sql.Tx) error {
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