| To: | Nathan Scott <nathans@xxxxxxx> |
|---|---|
| Subject: | Re: clearing 'flag unwritten extents' |
| From: | Roger Willcocks <willcor@xxxxxxxxx> |
| Date: | Tue, 15 Nov 2005 15:13:19 +0000 |
| Cc: | linux-xfs@xxxxxxxxxxx |
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| In-reply-to: | <20051114091337.P6499030@wobbly.melbourne.sgi.com> |
| References: | <cfac95650511101111w7e48e397w13bd8c9627e1aefd@mail.gmail.com> <20051111073434.B6484324@wobbly.melbourne.sgi.com> <cfac95650511110448n4a06abb8pa83452a4103dfc8d@mail.gmail.com> <20051114091337.P6499030@wobbly.melbourne.sgi.com> |
| Sender: | linux-xfs-bounce@xxxxxxxxxxx |
On 11/13/05, Nathan Scott <nathans@xxxxxxx> wrote: > On Fri, Nov 11, 2005 at 12:48:48PM +0000, Roger Willcocks wrote: > > AIUI, the 'flag unwritten extents' option allows non-root users to > > preallocate unwritten extents (root can always create them). Clearing > > the option would just prevent the creation of new unwritten extents. > > It does more than just that - in xfs_bmapi it changes the way > extents are handled - look for XFS_SB_VERSION_HASEXTFLGBIT in > xfs_bmap.c in particular. But only for realtime extents - and I don't have any of those... -- Roger |
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