Date: Wed, 9 Sep 2020 17:29:13 +0500 From: "Eugene M. Zheganin" <emz@norma.perm.ru> To: freebsd-stable@FreeBSD.org Subject: spa_namespace_lock and concurrent zfs commands Message-ID: <e458ba84-c044-1502-3672-c89e353ef303@norma.perm.ru>
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Hello, I'm using sort of FreeBSD ZFS appliance with custom API, and I'm suffering from huge timeouts when large (dozens, actually) of concurrent zfs/zpool commands are issued (get/create/destroy/snapshot/clone mostly). Are there any tunables that could help mitigate this ? Once I took part in reporting the https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203906 , but the issue that time got resolved somehow. Now I have another set of FreeBSD SANs and it;'s back. I've read the https://wiki.freebsd.org/AndriyGapon/AvgZFSLocking and I realize this probably doesn't have a quick solution, but still... Thanks. Eugene.
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