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From: Brian Foster <bfoster@redhat.com>
To: Mark Tinguely <tinguely@sgi.com>
Cc: xfs@oss.sgi.com
Subject: Re: [PATCH v5 00/10] speculative preallocation inode tracking
Date: Sun, 21 Oct 2012 10:00:35 -0400	[thread overview]
Message-ID: <50840003.406@redhat.com> (raw)
In-Reply-To: <5081BFFF.70603@sgi.com>

On 10/19/2012 05:02 PM, Mark Tinguely wrote:
> On 10/05/12 09:17, Brian Foster wrote:
>> Hi all,
>>
>> This is v3 of the speculative preallocation inode tracking patchset. This
>> functionality tracks inodes with post-EOF speculative preallocation
>> for the
>> purpose of background and on-demand trimming.
>>
>> Background scanning occurs on a longish interval (5 minutes by
>> default) and in
>> a best-effort mode (i.e., inodes are skipped due to lock contention or
>> dirty
>> cache). The intent is to clear up post-EOF blocks on inodes that might
>> have
>> allocations hanging around due to open-write-close sequences (NFS).
>>
>> On demand scanning is provided via a new ioctl and supports various
>> parameters
>> such as scan mode, filtering by quota id and minimum file size. A
>> pending use
>> case for on demand scanning is for accurate quota accounting via the
>> gluster
>> scale out filesystem (i.e., to free up preallocated space when near a
>> usage
>> limit).
>>
>> Brian
> 
> The series looks great.
> 

Hi Mark,

Thanks for the review.

> I am just curious, what is the reason for the padding in the
> xfs_eofblocks structure?
> 

I added the padding in response to review on an early revision of the set:

http://oss.sgi.com/archives/xfs/2012-09/msg00024.html

The purpose is to allow adding fields to the control structure down the
road without breaking existing binaries.

Brian

> Reviewed-by: Mark Tinguely <tinguely@sgi.com>

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  reply	other threads:[~2012-10-21 14:00 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-05 14:17 [PATCH v5 00/10] speculative preallocation inode tracking Brian Foster
2012-10-05 14:17 ` [PATCH v5 01/10] xfs: add EOFBLOCKS inode tagging/untagging Brian Foster
2012-10-05 14:17 ` [PATCH v5 02/10] xfs: support a tag-based inode_ag_iterator Brian Foster
2012-10-05 14:17 ` [PATCH v5 03/10] xfs: create helper to check whether to free eofblocks on inode Brian Foster
2012-10-23  0:58   ` Dave Chinner
2012-10-05 14:17 ` [PATCH v5 04/10] xfs: make xfs_free_eofblocks() non-static, return EAGAIN on trylock failure Brian Foster
2012-10-05 14:17 ` [PATCH v5 05/10] xfs: create function to scan and clear EOFBLOCKS inodes Brian Foster
2012-10-23  1:01   ` Dave Chinner
2012-10-05 14:17 ` [PATCH v5 06/10] xfs: add XFS_IOC_FREE_EOFBLOCKS ioctl Brian Foster
2012-10-11 14:13   ` Ben Myers
2012-10-11 22:35     ` Brian Foster
2012-10-15 22:46       ` Ben Myers
2012-10-15 23:49         ` Dave Chinner
2012-10-16  1:39           ` Dave Chinner
2012-10-17 22:40             ` Ben Myers
2012-10-18 12:16               ` Brian Foster
2012-10-18 15:46                 ` Ben Myers
2012-10-18 16:23                   ` Brian Foster
2012-10-22  7:34                 ` Dave Chinner
2012-10-22 13:23                   ` Brian Foster
2012-10-22 22:22                     ` Dave Chinner
2012-10-23  1:31   ` Dave Chinner
2012-10-24 16:16     ` Brian Foster
2012-10-24 19:27       ` Dave Chinner
2012-10-05 14:17 ` [PATCH v5 07/10] xfs: make xfs_quota_type() non-static Brian Foster
2012-10-23  1:31   ` Dave Chinner
2012-10-05 14:17 ` [PATCH v5 08/10] xfs: add quota id filtering to eofblocks scan Brian Foster
2012-10-23  1:42   ` Dave Chinner
2012-10-24 16:18     ` Brian Foster
2012-10-24 19:41       ` Dave Chinner
2012-10-24 23:02         ` Brian Foster
2012-10-25  0:02           ` Dave Chinner
2012-10-25  0:29             ` Brian Foster
2012-10-05 14:17 ` [PATCH v5 09/10] xfs: add minimum file size " Brian Foster
2012-10-23  1:43   ` Dave Chinner
2012-10-05 14:17 ` [PATCH v5 10/10] xfs: add background scanning to clear eofblocks inodes Brian Foster
2012-10-23  1:55   ` Dave Chinner
2012-10-19 21:02 ` [PATCH v5 00/10] speculative preallocation inode tracking Mark Tinguely
2012-10-21 14:00   ` Brian Foster [this message]
2012-10-21 17:53     ` Mark Tinguely
2012-10-21 20:31       ` Mark Tinguely
2012-10-21 22:28       ` Dave Chinner
2012-10-23 19:10 ` Ben Myers

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