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Revert ce90208cf9e04df966429f115d8831371ea9afce #710

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ryao opened this issue Apr 30, 2012 · 2 comments
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Revert ce90208cf9e04df966429f115d8831371ea9afce #710

ryao opened this issue Apr 30, 2012 · 2 comments
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0.6.0

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@ryao
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ryao commented Apr 30, 2012

I switched my server to Linux 2.6.32.59 and proceeded to recompile Gentoo inside a virtual machine on zvol. That led to the system entering a loop in which it output page allocation failures to the console with nothing available in ZONE_DMA.

Either I failed to stress the zvols enough with newer kernels or the allocation behavior changed sometime between 2.6.32.y and 3.3.y to prioritize page allocations ZONE_NORMAL when allocations from both zones are possible. Either way, this needs more attention and ce90208 should be reverted.
@behlendorf
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Thanks for reporting this so quickly. I'll revert it from the tree right away and we can continue to iterate on this in a branch.

behlendorf added a commit to behlendorf/zfs that referenced this issue Apr 30, 2012
@behlendorf
Revert "Disable direct reclaim on zvols"
7101140 
This reverts commit ce90208.  This
change was observed to cause problems when using a zvol to back a VM
under 2.6.32.59 kernels.  This issue was filed as openzfs#710.

Signed-off-by: Richard Yao <ryao@cs.stonybrook.edu>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue openzfs#342
Issue openzfs#710
@ryao
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ryao commented May 17, 2012

I am having such good results with the patches in pull request #726 that I think discussion of this can move there.

@ryao ryao closed this as completed May 17, 2012
pcd1193182 added a commit to pcd1193182/zfs that referenced this issue Sep 26, 2023
@pcd1193182
DLPX-84537 Don't try to enable agent features on non-agent pools (ope…
b970f5f 
…nzfs#710)

Signed-off-by: Paul Dagnelie <pcd@delphix.com>
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@behlendorf @ryao