Date: Tue, 20 Apr 2021 16:14:27 +0000 From: bugzilla-noreply@freebsd.org To: fs@FreeBSD.org Subject: [Bug 255261] Slow unmount of (ZFS) filesystem at reboot time Message-ID: <bug-255261-3630-TfZyhLppkc@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-255261-3630@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=255261 --- Comment #1 from Peter Eriksson <pen@lysator.liu.se> --- I probably should have mentioned some more details: FreeBSD 12.2-RELEASE-p6 149354 ZFS filesystems # zpool list NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT DATA 582T 272T 310T - - 7% 46% 1.00x ONLINE - FILUR00 65.5T 107G 65.4T - - 0% 0% 1.00x ONLINE - FILUR02 196T 72.6T 124T - - 11% 36% 1.00x ONLINE - FILUR03 196T 78.2T 118T - - 11% 39% 1.00x ONLINE - RUNUR01 65.5T 11.8M 65.5T - - 0% 0% 1.00x ONLINE - SUSPECT 9.06T 2.79M 9.06T - - 0% 0% 1.00x ONLINE - UNUSED 196T 5.38M 196T - - 0% 0% 1.00x ONLINE - zroot 444G 9.03G 435G - - 21% 2% 1.00x ONLINE - At the reboot time when it was really slow it unmounted around 6-10 filesystems per second -> estimated reboot time around 4-5 hours... (Needless to say I hard-rebooted it with an "ipmitool power reset" after an hour :-) (It hasn't been this slow before, but we don't reboot these servers very often). Anyway, a more verbose vfs_unmount() would be a good thing even with a more sane amount of filesystems - in my opinion. (And preferably a faster zfs unmount operation :-) -- You are receiving this mail because: You are the assignee for the bug.home | help
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