Linux Btrfs filesystem development
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From: Matt Grant <matt@mattgrant.net.nz>
To: linux-btrfs@vger.kernel.org
Subject: Btrfs-cleaner FS DoS issues
Date: Thu, 16 Apr 2015 13:41:21 +1200	[thread overview]
Message-ID: <20150416014135.6FB5841C60@mx.anathoth.net> (raw)

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Hi!

When ever I delete a large snapshot this stalls all the processes on my system for 30 minutes plus, kernel v19.2. Btrfs-cleaner is taking 100% CPU when completely stalled. Every few minutes its say 99.8% and satall abates and  processes/io happen.

About to lodge a kernel bug about this as it is serious issue.

Could some one look at making the clean up process more sensitive to when the system is idle? MD Raid is very good at this, and it should be possible to set this up.

Best Regards,

Matt Grantÿôèº{.nÇ+‰·Ÿ®‰­†+%ŠËÿ±éݶ\x17¥Šwÿº{.nÇ+‰·¥Š{±ý»k~ÏâžØ^n‡r¡ö¦zË\x1aëh™¨è­Ú&£ûàz¿äz¹Þ—ú+€Ê+zf£¢·hšˆ§~†­†Ûiÿÿïêÿ‘êçz_è®\x0fæj:+v‰¨þ)ߣøm

             reply	other threads:[~2015-04-16  1:41 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-16  1:41 Matt Grant [this message]
2015-04-16  4:25 ` Btrfs-cleaner FS DoS issues Chris Murphy
2015-04-16  4:54 ` Roman Mamedov

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