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Date:      Sun, 03 Feb 2019 13:57:47 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 235439] sync(8) hanged in D+ state after more swap space was added
Message-ID:  <bug-235439-227-4UqKCtyjJA@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-235439-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-235439-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D235439

--- Comment #2 from Yuri Victorovich <yuri@freebsd.org> ---
(In reply to Andriy Gapon from comment #1)

> What was a filesystem for that swap file?

The newly added swap file is on zfs. The previously existed swap file is on
ufs.

> $ procstat -kk 40832
>   PID    TID COMM                TDNAME              KSTACK=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
> 40832 101728 sync                -                   mi_switch+0xe6 sleep=
q_wait+0x2c _cv_wait+0x16e txg_wait_synced+0xa5 dmu_tx_assign+0x48 zil_comm=
it_impl+0x8e zfs_sync+0xa6 sys_sync+0x116 amd64_syscall+0xa38 fast_syscall_=
common+0x101=20
> $ procstat -kk 88582
>   PID    TID COMM                TDNAME              KSTACK=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
> 88582 103868 sync                -                   mi_switch+0xe6 sleep=
q_wait+0x2c _cv_wait+0x16e txg_wait_synced+0xa5 dmu_tx_assign+0x48 zil_comm=
it_impl+0x8e zfs_sync+0xa6 sys_sync+0x116 amd64_syscall+0xa38 fast_syscall_=
common+0x101

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