Re: syslog message repeated 3x

2013-05-09 Thread Hugo Mills
On Thu, May 09, 2013 at 11:26:25AM +0200, Toralf Förster wrote:
 I'm just curious why the last of the following 3 commands :
 
 $ dd if=/dev/zero of=/mnt/ramdisk/disk1 bs=1M count=257
 $ yes | /sbin/mkfs.btrfs /mnt/ramdisk/disk1
 $ mount -o loop /mnt/ramdisk/disk1 /mnt/t
 
 gives 3x the same log message :
 
 2013-05-09T11:23:00.230+02:00 n22 kernel: device fsid 
 5b4be7c4-e662-459a-a2a7-066e9384c901 devid 1 transid 4 /dev/loop1
 2013-05-09T11:23:00.581+02:00 n22 kernel: device fsid 
 5b4be7c4-e662-459a-a2a7-066e9384c901 devid 1 transid 4 /dev/loop1
 2013-05-09T11:23:00.583+02:00 n22 kernel: device fsid 
 5b4be7c4-e662-459a-a2a7-066e9384c901 devid 1 transid 4 /dev/loop1

   At a guess, two of those are probably from btrfs dev scan triggered
by udev.

   Hugo.

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Re: syslog message repeated 3x

2013-05-09 Thread Toralf Förster
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On 05/09/2013 12:04 PM, Hugo Mills wrote:
 At a guess, two of those are probably from btrfs dev scan
 triggered by udev.
Those messages do only appear for a btrfs, not if I choose ext4.


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Re: syslog message repeated 3x

2013-05-09 Thread Hugo Mills
On Thu, May 09, 2013 at 12:37:38PM +0200, Toralf Förster wrote:
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 On 05/09/2013 12:04 PM, Hugo Mills wrote:
  At a guess, two of those are probably from btrfs dev scan
  triggered by udev.
 Those messages do only appear for a btrfs, not if I choose ext4.

   They're from the btrfs kernel module, so that's hardly surprising. :)

   Hugo.

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Re: syslog message repeated 3x

2013-05-09 Thread Wang Shilong
Hi,

I just try your steps, but only 1x log message.

Anyway, i use the latest btrfs-progs.
git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs.git


Can you try this and see if it happens again?


Thanks,
Wang
 I'm just curious why the last of the following 3 commands :
 
 $ dd if=/dev/zero of=/mnt/ramdisk/disk1 bs=1M count=257
 $ yes | /sbin/mkfs.btrfs /mnt/ramdisk/disk1
 $ mount -o loop /mnt/ramdisk/disk1 /mnt/t
 
 gives 3x the same log message :
 
 2013-05-09T11:23:00.230+02:00 n22 kernel: device fsid 
 5b4be7c4-e662-459a-a2a7-066e9384c901 devid 1 transid 4 /dev/loop1
 2013-05-09T11:23:00.581+02:00 n22 kernel: device fsid 
 5b4be7c4-e662-459a-a2a7-066e9384c901 devid 1 transid 4 /dev/loop1
 2013-05-09T11:23:00.583+02:00 n22 kernel: device fsid 
 5b4be7c4-e662-459a-a2a7-066e9384c901 devid 1 transid 4 /dev/loop1
 
 -- 
 MfG/Sincerely
 Toralf Förster
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Re: syslog message repeated 3x

2013-05-09 Thread Wang Shilong
Oh, My kernel version is btrfs-next.

This message gets from kernel..so you can try this url:
git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-next.git


 Hi,
 
 I just try your steps, but only 1x log message.
 
 Anyway, i use the latest btrfs-progs.
 git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs.git
 
 
 Can you try this and see if it happens again?
 
 
 Thanks,
 Wang
 I'm just curious why the last of the following 3 commands :
 
 $ dd if=/dev/zero of=/mnt/ramdisk/disk1 bs=1M count=257
 $ yes | /sbin/mkfs.btrfs /mnt/ramdisk/disk1
 $ mount -o loop /mnt/ramdisk/disk1 /mnt/t
 
 gives 3x the same log message :
 
 2013-05-09T11:23:00.230+02:00 n22 kernel: device fsid 
 5b4be7c4-e662-459a-a2a7-066e9384c901 devid 1 transid 4 /dev/loop1
 2013-05-09T11:23:00.581+02:00 n22 kernel: device fsid 
 5b4be7c4-e662-459a-a2a7-066e9384c901 devid 1 transid 4 /dev/loop1
 2013-05-09T11:23:00.583+02:00 n22 kernel: device fsid 
 5b4be7c4-e662-459a-a2a7-066e9384c901 devid 1 transid 4 /dev/loop1
 
 -- 
 MfG/Sincerely
 Toralf Förster
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Re: syslog message repeated 3x

2013-05-09 Thread Toralf Förster
On 05/09/2013 01:47 PM, Wang Shilong wrote:
 Anyway, i use the latest btrfs-progs.

well, under Gentoo I used sys-fs/btrfs-progs- which points always to the 
latest git version :
git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs.git

My host kernel is stable 3.9.1

The mount command still gives :

2013-05-09T14:43:35.604+02:00 n22 kernel: device fsid 
20a30a6b-a82f-429f-b426-00f1739e4d3d devid 1 transid 8 /dev/loop1
2013-05-09T14:43:35.604+02:00 n22 kernel: device fsid 
20a30a6b-a82f-429f-b426-00f1739e4d3d devid 1 transid 8 /dev/loop1
2013-05-09T14:43:35.608+02:00 n22 kernel: btrfs: disk space caching is enabled
2013-05-09T14:43:35.660+02:00 n22 kernel: device fsid 
20a30a6b-a82f-429f-b426-00f1739e4d3d devid 1 transid 8 /dev/loop1

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Toralf Förster
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Re: syslog message repeated 3x

2013-05-09 Thread Hugo Mills
On Thu, May 09, 2013 at 02:45:00PM +0200, Toralf Förster wrote:
 On 05/09/2013 01:47 PM, Wang Shilong wrote:
  Anyway, i use the latest btrfs-progs.
 
 well, under Gentoo I used sys-fs/btrfs-progs- which points always to the 
 latest git version :
 git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs.git
 
 My host kernel is stable 3.9.1
 
 The mount command still gives :
 
 2013-05-09T14:43:35.604+02:00 n22 kernel: device fsid 
 20a30a6b-a82f-429f-b426-00f1739e4d3d devid 1 transid 8 /dev/loop1
 2013-05-09T14:43:35.604+02:00 n22 kernel: device fsid 
 20a30a6b-a82f-429f-b426-00f1739e4d3d devid 1 transid 8 /dev/loop1
 2013-05-09T14:43:35.608+02:00 n22 kernel: btrfs: disk space caching is enabled
 2013-05-09T14:43:35.660+02:00 n22 kernel: device fsid 
 20a30a6b-a82f-429f-b426-00f1739e4d3d devid 1 transid 8 /dev/loop1

   I guess the main question is... why is this a problem for you?

   The message is informational and doesn't indicate any kind of issue
with the FS. I'd just ignore it/them.

   (Also, are you running btrfs dev scan beforehand or not? It'd be
interesting to see the difference in your logs -- particularly with
timestamps -- when you do that.)

   Hugo.

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