Date: Fri, 29 Nov 2019 17:43:18 +0700 From: Eugene Grosbein <eugen@grosbein.net> To: Konstantin Belousov <kostikbel@gmail.com>, Willem Jan Withagen <wjw@digiware.nl> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org>, Alexander Motin <mav@FreeBSD.org>, Andriy Gapon <avg@freebsd.org> Subject: Re: Process in T state does not want to die..... Message-ID: <b7cf405a-ceaf-5d4c-214c-d7ad5c9557e7@grosbein.net> In-Reply-To: <a2daa66f-b073-8c20-3668-aceec25b4ba9@grosbein.net> References: <966f830c-bf09-3683-90da-e70aa343cc16@digiware.nl> <3c57e51d-fa36-39a3-9691-49698e8d2124@grosbein.net> <91490c30-45e9-3c38-c55b-12534fd09e28@digiware.nl> <20191128115122.GN10580@kib.kiev.ua> <296874db-40f0-c7c9-a573-410e4c86049a@digiware.nl> <20191128195013.GU10580@kib.kiev.ua> <1ae7ad65-902c-8e5f-bcf1-1e98448c64bb@digiware.nl> <20191128214633.GV10580@kib.kiev.ua> <a2daa66f-b073-8c20-3668-aceec25b4ba9@grosbein.net>
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29.11.2019 16:24, Eugene Grosbein wrote: > 29.11.2019 4:46, Konstantin Belousov write: > >>> sys_extattr_set_fd+0xee amd64_syscall+0x364 fast_syscall_common+0x101 >> This is an example of the cause for your problem. > > I observe this problem too, but my use case is different. > > I have several bhyve instances running Windows guests over ZVOLs over SSD-only RAIDZ1 pool. > "zfs destroy" for snapshots with large "used" numbers takes long time (several minutes) due to slow TRIM. > Sometimes this makes virtual guest unresponsible and attempt to restart the bhyve instance may bring it to Exiting (E) > state for several minutes and it finishes successfully after that. But sometimes bhyve process hangs in T state indefinitely. > > This is 11.3-STABLE/amd64 r354667. Should I try your patch too? OTOH, same system has several FreeBSD jails over mounted ZFS (file systems) over same pool. These file systems have snapshots created/removed too and snapshot are large (upto 10G).
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