Re: Documenting MS_LAZYTIME

2015-03-02 Thread Michael Kerrisk (man-pages)
On 02/27/2015 06:51 PM, Darrick J. Wong wrote: > On Fri, Feb 27, 2015 at 09:01:10AM +0100, Michael Kerrisk (man-pages) wrote: >> On 02/27/2015 01:04 AM, Theodore Ts'o wrote: >>> On Thu, Feb 26, 2015 at 02:36:33PM +0100, Michael Kerrisk (man-pages) wrote: The disadvantage of MS_STRICTA

Re: Documenting MS_LAZYTIME

2015-02-27 Thread Darrick J. Wong
On Fri, Feb 27, 2015 at 09:01:10AM +0100, Michael Kerrisk (man-pages) wrote: > On 02/27/2015 01:04 AM, Theodore Ts'o wrote: > > On Thu, Feb 26, 2015 at 02:36:33PM +0100, Michael Kerrisk (man-pages) wrote: > >> > >> The disadvantage of MS_STRICTATIME | MS_LAZYTIME is that > >> in the case of

Re: Documenting MS_LAZYTIME

2015-02-27 Thread Theodore Ts'o
With Omar's suggestions, this looks great. Thanks!! - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: Documenting MS_LAZYTIME

2015-02-27 Thread Michael Kerrisk (man-pages)
Hello Omar, On 02/27/2015 09:08 AM, Omar Sandoval wrote: > On Fri, Feb 27, 2015 at 09:01:10AM +0100, Michael Kerrisk (man-pages) wrote: >> On 02/27/2015 01:04 AM, Theodore Ts'o wrote: >>> On Thu, Feb 26, 2015 at 02:36:33PM +0100, Michael Kerrisk (man-pages) wrote: The disadvantage of

Re: Documenting MS_LAZYTIME

2015-02-27 Thread Omar Sandoval
On Fri, Feb 27, 2015 at 09:01:10AM +0100, Michael Kerrisk (man-pages) wrote: > On 02/27/2015 01:04 AM, Theodore Ts'o wrote: > > On Thu, Feb 26, 2015 at 02:36:33PM +0100, Michael Kerrisk (man-pages) wrote: > >> > >> The disadvantage of MS_STRICTATIME | MS_LAZYTIME is that > >> in the case of

Re: Documenting MS_LAZYTIME

2015-02-27 Thread Michael Kerrisk (man-pages)
On 02/27/2015 01:04 AM, Theodore Ts'o wrote: > On Thu, Feb 26, 2015 at 02:36:33PM +0100, Michael Kerrisk (man-pages) wrote: >> >> The disadvantage of MS_STRICTATIME | MS_LAZYTIME is that >> in the case of a system crash, the atime and mtime fields >> on disk might be out of date by at m

Re: Documenting MS_LAZYTIME

2015-02-26 Thread Theodore Ts'o
On Thu, Feb 26, 2015 at 02:36:33PM +0100, Michael Kerrisk (man-pages) wrote: > > The disadvantage of MS_STRICTATIME | MS_LAZYTIME is that > in the case of a system crash, the atime and mtime fields > on disk might be out of date by at most 24 hours. I'd change to "The disadvantage of

Re: Documenting MS_LAZYTIME

2015-02-26 Thread Michael Kerrisk (man-pages)
On 02/26/2015 02:31 PM, Theodore Ts'o wrote: > On Thu, Feb 26, 2015 at 09:49:39AM +0100, Michael Kerrisk (man-pages) wrote: >>> How about somethign like "This mount significantly reduces writes >>> needed to update the inode's timestamps, especially mtime and actime. >> >> What is "actime" in the p

Re: Documenting MS_LAZYTIME

2015-02-26 Thread Theodore Ts'o
On Thu, Feb 26, 2015 at 09:49:39AM +0100, Michael Kerrisk (man-pages) wrote: > > How about somethign like "This mount significantly reduces writes > > needed to update the inode's timestamps, especially mtime and actime. > > What is "actime" in the preceding line? Should it be "ctime"? Sorry, no,

Re: Documenting MS_LAZYTIME

2015-02-26 Thread Michael Kerrisk (man-pages)
On 02/23/2015 05:24 PM, Eric Sandeen wrote: > On 2/23/15 6:20 AM, Austin S Hemmelgarn wrote: >> On 2015-02-20 21:56, Theodore Ts'o wrote: >>> On Fri, Feb 20, 2015 at 09:49:34AM -0600, Eric Sandeen wrote: >This mount option significantly reduces writes to the >

Re: Documenting MS_LAZYTIME

2015-02-26 Thread Michael Kerrisk (man-pages)
Ted, On 02/21/2015 03:56 AM, Theodore Ts'o wrote: > On Fri, Feb 20, 2015 at 09:49:34AM -0600, Eric Sandeen wrote: >> >>> This mount option significantly reduces writes to the >>> inode table for workloads that perform frequent random >>> writes to pre

Re: Documenting MS_LAZYTIME

2015-02-23 Thread Eric Sandeen
On 2/23/15 6:20 AM, Austin S Hemmelgarn wrote: > On 2015-02-20 21:56, Theodore Ts'o wrote: >> On Fri, Feb 20, 2015 at 09:49:34AM -0600, Eric Sandeen wrote: >>> This mount option significantly reduces writes to the inode table for workloads that perform f

Re: Documenting MS_LAZYTIME

2015-02-23 Thread Austin S Hemmelgarn
On 2015-02-20 21:56, Theodore Ts'o wrote: On Fri, Feb 20, 2015 at 09:49:34AM -0600, Eric Sandeen wrote: This mount option significantly reduces writes to the inode table for workloads that perform frequent random writes to preallocated files.

Re: Documenting MS_LAZYTIME

2015-02-22 Thread Robert White
On 02/20/2015 12:50 AM, Michael Kerrisk wrote: * As at Linux 3.20, this option is supported only on ext4. "As of Linux 3.20" is more correct. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordo

Re: Documenting MS_LAZYTIME

2015-02-20 Thread Theodore Ts'o
On Fri, Feb 20, 2015 at 09:49:34AM -0600, Eric Sandeen wrote: > > > This mount option significantly reduces writes to the > > inode table for workloads that perform frequent random > > writes to preallocated files. > > This seems like an overly speci

Re: Documenting MS_LAZYTIME

2015-02-20 Thread Michael Kerrisk (man-pages)
On 02/20/2015 04:49 PM, Eric Sandeen wrote: > On 2/20/15 2:50 AM, Michael Kerrisk wrote: >> Hello Ted, >> >> Based on your commit message 0ae45f63d4e, I I wrote the documentation >> below for MS_LAZYTIME, to go into the mount(2) man page. Could you >> please check it over and let me know if it's ac

Re: Documenting MS_LAZYTIME

2015-02-20 Thread Eric Sandeen
On 2/20/15 2:50 AM, Michael Kerrisk wrote: > Hello Ted, > > Based on your commit message 0ae45f63d4e, I I wrote the documentation > below for MS_LAZYTIME, to go into the mount(2) man page. Could you > please check it over and let me know if it's accurate. In particular, > I added pieces marked wit

Re: Documenting MS_LAZYTIME

2015-02-20 Thread Michael Kerrisk (man-pages)
On 20 February 2015 at 13:32, Andreas Dilger wrote: > On Feb 20, 2015, at 1:50 AM, Michael Kerrisk wrote: >> >> Hello Ted, >> >> Based on your commit message 0ae45f63d4e, I I wrote the documentation >> below for MS_LAZYTIME, to go into the mount(2) man page. Could you >> please check it over and

Re: Documenting MS_LAZYTIME

2015-02-20 Thread Andreas Dilger
On Feb 20, 2015, at 1:50 AM, Michael Kerrisk wrote: > > Hello Ted, > > Based on your commit message 0ae45f63d4e, I I wrote the documentation > below for MS_LAZYTIME, to go into the mount(2) man page. Could you > please check it over and let me know if it's accurate. In particular, > I added piec

Documenting MS_LAZYTIME

2015-02-20 Thread Michael Kerrisk
Hello Ted, Based on your commit message 0ae45f63d4e, I I wrote the documentation below for MS_LAZYTIME, to go into the mount(2) man page. Could you please check it over and let me know if it's accurate. In particular, I added pieces marked with "*" below that were not part of the commit message an