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* [linux-lvm] lvdisplay "open" field computing
@ 2019-07-09  9:47 Simon ELBAZ
  2019-07-09 15:06 ` Zdenek Kabelac
  0 siblings, 1 reply; 15+ messages in thread
From: Simon ELBAZ @ 2019-07-09  9:47 UTC (permalink / raw)
  To: linux-lvm

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Hi,

I am trying to understand how the open field is computed.

On a CentOS6 server, lvdisplay has the following output:

/lvdisplay /dev/mapper/vg_obm-var_spool_imap //
//  --- Logical volume ---//
//  LV Path                /dev/vg_obm/var_spool_imap//
//  LV Name                var_spool_imap//
//  VG Name                vg_obm//
//  LV UUID 0oK7h0-tDZH-eUxE-AyBw-cK7x-U9pS-W7X4Uh//
//  LV Write Access        read/write//
//  LV Creation host, time panoramix.ch-perrens.fr, 2015-01-16 11:03:10 
+0100//
//  LV Status              available//
//  # open                 2//
//  LV Size                1,92 TiB//
//  Current LE             504572//
//  Segments               2//
//  Allocation             inherit//
//  Read ahead sectors     auto//
//  - currently set to     256//
//  Block device           253:3//
/

  And dmsetup show the following info:

/# dmsetup info -c | grep "253" | grep " 3"//
//vg_obm-var_spool_imap                 253   3 L--w    2 2      0 
LVM-1i1v6pEjab2WslaDQRvkf8eLk6QfBW4J0oK7h0tDZHeUxEAyBwcK7xU9pSW7X4Uh/

Could you please give me some hint to understand how "open = 2" is 
obtained ?

Regards/
/

//

-- 
Simon Elbaz
@Linagora
Mob: +33 (0) 6 38 99 18 34
Tour Franklin 31ème étage
100/101 Quartier Boieldieu
92042 La Défense
FRANCE


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^ permalink raw reply	[flat|nested] 15+ messages in thread

end of thread, other threads:[~2019-07-16  8:57 UTC | newest]

Thread overview: 15+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-07-09  9:47 [linux-lvm] lvdisplay "open" field computing Simon ELBAZ
2019-07-09 15:06 ` Zdenek Kabelac
2019-07-09 15:12   ` Simon ELBAZ
2019-07-09 15:15     ` Zdenek Kabelac
2019-07-09 15:27       ` Simon ELBAZ
     [not found]       ` <1f54874c-d4da-2579-955e-73e6caa8613b@linagora.com>
2019-07-10 10:51         ` Zdenek Kabelac
2019-07-10 11:54           ` Simon ELBAZ
2019-07-10 12:46             ` Simon ELBAZ
2019-07-10 13:32             ` Zdenek Kabelac
2019-07-10 13:37               ` Simon ELBAZ
2019-07-11  9:39                 ` Simon ELBAZ
2019-07-11 15:17                   ` Zdenek Kabelac
2019-07-12 12:38                     ` Simon ELBAZ
2019-07-12 13:07                       ` Zdenek Kabelac
2019-07-16  8:57                         ` Simon ELBAZ

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