Journal inode: 8 Journal device: 0x0000 First orphan inode: 0 # ./tune2fs -l /dev/tripserv_vol/pages tune2fs 1.28 (31-Aug-2002) ./tune2fs: Bad magic number in super-block while trying to open = /dev/tripserv_vol/pages Couldn't find valid filesystem superblock. You have new mail in /var/spool/mail/root # mke2fs -n /dev/tripserv_vol/pages mke2fs 1.27 (8-Mar-2002) Filesystem label=3D OS type: Linux Block size=3D4096 (log=3D2) Fragment size=3D4096 (log=3D2) 2621440 inodes, 5242880 blocks 262144 blocks (5.00%) reserved for the super user First data block=3D0 160 block groups 32768 blocks per group, 32768 fragments per group 16384 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, = 2654208, 4096000 ----- Original Message -----=20 From: Robin Edgar - Tripany=20 To: linux-lvm@sistina.com=20 Sent: Wednesday, September 18, 2002 2:07 PM Subject: [linux-lvm] Help! unable to mount lv's - can't see why! Hi, I had 4 (ide) disks in an array (and 1 vg) of which one (hde) broke. = As I was not too sure of the stability of the system, I decided to do a = dd of the disk byte by byte to another identical disk. After this was = done (with loads of sector unreadable errors) I replaced the old disk = with the new disk, rebooted the system and by all standards all seems = well (see below): Unfortunately, only the /dev/tripserv_vol/docu will mount well! /dev/tripserv_vol/pages gives the following error: # mount /dev/tripserv_vol/pages /c mount: you must specify the filesystem type # mount /dev/tripserv_vol/pages /c -t ext3 mount: wrong fs type, bad option, bad superblock on = /dev/tripserv_vol/pages, or too many mounted file systems Anyone have any ideas why it won't mount?! Cheers, Robin Edgar #pvscan: pvscan -- reading all physical volumes (this may take a while...) pvscan -- ACTIVE PV "/dev/hdg1" of VG "tripserv_vol" [38.16 GB / = 7.93 GB free] pvscan -- ACTIVE PV "/dev/hdh1" of VG "tripserv_vol" [38.16 GB / = 8.01 GB free] pvscan -- ACTIVE PV "/dev/hde1" of VG "tripserv_vol" [55.91 GB / 0 = free] pvscan -- ACTIVE PV "/dev/hdf1" of VG "tripserv_vol" [55.91 GB / = 3.37 GB free] pvscan -- total: 4 [188.16 GB] / in use: 4 [188.16 GB] / in no VG: 0 = [0] (identical output to before changing the disks around) #pvdisplay /dev/hde1 --- Physical volume --- PV Name /dev/hde1 VG Name tripserv_vol PV Size 55.92 GB [117266625 secs] / NOT usable 4.18 MB = [LVM: 179 KB] PV# 1 PV Status available Allocatable yes (but full) Cur LV 20 PE Size (KByte) 4096 Total PE 14313 Free PE 0 Allocated PE 14313 PV UUID KCIKwa-3lvx-k7bj-27ks-hGlI-oZRo-5q7CjM (also identical) #vgck -v vgck -- locking logical volume manager vgck -- finding all volume group(s) vgck -- checking volume group name "tripserv_vol" vgck -- checking existence of volume group "tripserv_vol" vgck -- reading volume group data for "tripserv_vol" from lvmtab vgck -- checking volume group consistency of "tripserv_vol" in lvmtab vgck -- VGDA of "tripserv_vol" in lvmtab is consistent vgck -- reading volume group data for "tripserv_vol" from physical = volume(s) vgck -- checking volume group consistency of "tripserv_vol" on = physical volumes vgck -- VGDA of "tripserv_vol" on physical volumes is consistent vgck -- unlocking logical volume manager # vgdisplay --- Volume group --- VG Name tripserv_vol VG Access read/write VG Status available/resizable VG # 0 MAX LV 255 Cur LV 22 Open LV 1 MAX LV Size 255.99 GB Max PV 255 Cur PV 4 Act PV 4 VG Size 188.13 GB PE Size 4 MB Total PE 48162 Alloc PE / Size 43220 / 168.83 GB Free PE / Size 4942 / 19.30 GB VG UUID KDiCWx-ae2w-oDnx-Hl5O-Amhd-fIM3-y51bIX # vgscan -v vgscan -- removing "/etc/lvmtab" and "/etc/lvmtab.d" vgscan -- creating empty "/etc/lvmtab" and "/etc/lvmtab.d" vgscan -- reading all physical volumes (this may take a while...) vgscan -- scanning for all active volume group(s) first vgscan -- found active volume group "tripserv_vol" vgscan -- reading data of volume group "tripserv_vol" from physical = volume(s) vgscan -- inserting "tripserv_vol" into lvmtab vgscan -- backing up volume group "tripserv_vol" vgscan -- checking volume group name "tripserv_vol" vgscan -- checking volume group consistency of "tripserv_vol" vgscan -- checking existence of "/etc/lvmtab.d" vgscan -- storing volume group data of "tripserv_vol" in = "/etc/lvmtab.d/tripserv_vol.tmp" vgscan -- storing physical volume data of "tripserv_vol" in = "/etc/lvmtab.d/tripserv_vol.tmp" vgscan -- storing logical volume data of volume group "tripserv_vol" = in "/etc/lvmtab.d/tripserv_vol.tmp" vgscan -- renaming "/etc/lvmtab.d/tripserv_vol.tmp" to = "/etc/lvmtab.d/tripserv_vol" vgscan -- removing special files and directory for volume group = "tripserv_vol" vgscan -- creating directory and group character special file for = "tripserv_vol" vgscan -- creating block device special files for tripserv_vol vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created vgscan -- WARNING: This program does not do a VGDA backup of your = volume group #lvscan lvscan -- ACTIVE Original "/dev/tripserv_vol/docu" [512 MB] = striped[4] lvscan -- ACTIVE Original "/dev/tripserv_vol/install" [10 GB] = striped[4] lvscan -- ACTIVE Original "/dev/tripserv_vol/pages" [20 GB] = striped[4] lvscan -- ACTIVE "/dev/tripserv_vol/gfx" [10 GB] striped[4] lvscan -- ACTIVE "/dev/tripserv_vol/sfx" [10 GB] striped[4] lvscan -- ACTIVE "/dev/tripserv_vol/people" [20 GB] = striped[4] lvscan -- ACTIVE Original "/dev/tripserv_vol/dim" [2 GB] striped[4] lvscan -- ACTIVE "/dev/tripserv_vol/mp3" [20 GB] striped[4] lvscan -- ACTIVE "/dev/tripserv_vol/applications" [2 GB] = striped[4] lvscan -- ACTIVE Original "/dev/tripserv_vol/code" [512 MB] = striped[4] lvscan -- ACTIVE "/dev/tripserv_vol/dumpdir" [10 GB] = striped[4] lvscan -- ACTIVE Original "/dev/tripserv_vol/homes" [10 GB] = striped[4] lvscan -- ACTIVE Original "/dev/tripserv_vol/info" [5 GB] striped[4] lvscan -- ACTIVE "/dev/tripserv_vol/log" [252 MB] = striped[3] lvscan -- ACTIVE "/dev/tripserv_vol/store" [608 MB] = striped[4] lvscan -- ACTIVE Snapshot "/dev/tripserv_vol/docusnap" [492.19 MB] = of /dev/tripserv_vol/docu lvscan -- ACTIVE Snapshot "/dev/tripserv_vol/installsnap" [9.84 GB] = of /dev/tripserv_vol/install lvscan -- ACTIVE Snapshot "/dev/tripserv_vol/dimsnap" [1.97 GB] of = /dev/tripserv_vol/dim lvscan -- ACTIVE Snapshot "/dev/tripserv_vol/codesnap" [504 MB] of = /dev/tripserv_vol/code lvscan -- ACTIVE Snapshot "/dev/tripserv_vol/pagessnap" [19.69 GB] = of /dev/tripserv_vol/pages lvscan -- ACTIVE Snapshot "/dev/tripserv_vol/infosnap" [4.92 GB] of = /dev/tripserv_vol/info lvscan -- ACTIVE Snapshot "/dev/tripserv_vol/homessnap" [9.84 GB] of = /dev/tripserv_vol/homes lvscan -- 22 logical volumes with 168.08 GB total in 1 volume group lvscan -- 22 active logical volumes # lvdisplay /dev/tripserv_vol/docu --- Logical volume --- LV Name /dev/tripserv_vol/docu VG Name tripserv_vol LV Write Access read/write LV snapshot status source of /dev/tripserv_vol/docusnap [active] LV Status available LV # 1 # open 1 LV Size 512 MB Current LE 128 Allocated LE 128 Stripes 4 Stripe size (KByte) 4 Allocation next free Read ahead sectors 120 Block device 58:0 # lvdisplay /dev/tripserv_vol/people --- Logical volume --- LV Name /dev/tripserv_vol/people VG Name tripserv_vol LV Write Access read/write LV Status available LV # 6 # open 0 LV Size 20 GB Current LE 5120 Allocated LE 5120 Stripes 4 Stripe size (KByte) 4 Allocation next free Read ahead sectors 120 Block device 58:5 # lvdisplay /dev/tripserv_vol/pages --- Logical volume --- LV Name /dev/tripserv_vol/pages VG Name tripserv_vol LV Write Access read/write LV snapshot status source of /dev/tripserv_vol/pagessnap [active] LV Status available LV # 3 # open 0 LV Size 20 GB Current LE 5120 Allocated LE 5120 Stripes 4 Stripe size (KByte) 4 Allocation next free Read ahead sectors 120 Block device 58:2 tripserv:/# lvdisplay /dev/tripserv_vol/pagessnap --- Logical volume --- LV Name /dev/tripserv_vol/pagessnap VG Name tripserv_vol LV Write Access read only LV snapshot status active destination for /dev/tripserv_vol/pages LV Status available LV # 20 # open 0 LV Size 20 GB Current LE 5120 Allocated LE 5120 snapshot chunk size 64 KB Allocated to snapshot 0.00% [0/19.69 GB] Allocated to COW-table 320 MB Stripes 4 Stripe size (KByte) 4 Allocation next free Read ahead sectors 120 Block device 58:19 # lvdisplay /dev/tripserv_vol/docusnap --- Logical volume --- LV Name /dev/tripserv_vol/docusnap VG Name tripserv_vol LV Write Access read only LV snapshot status active destination for /dev/tripserv_vol/docu LV Status available LV # 16 # open 0 LV Size 512 MB Current LE 128 Allocated LE 128 snapshot chunk size 64 KB Allocated to snapshot 0.05% [256 KB/492.19 MB] Allocated to COW-table 7.81 MB Stripes 4 Stripe size (KByte) 4 Allocation next free Read ahead sectors 120 Block device 58:15 So it all looks good! ------=_NextPart_000_00ED_01C25F2B.F7B2AE30 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

I've discovered that there is a problem = with /all/=20 the superblocks except for those of the /docu lv (see below). It does = lead me to=20 another question though - only one of the HDs crashed: is it possible = that LVM=20 wrote all the superblocks on 1 HD?! If so this seems like a pretty = serious bug=20 in LVM...

Robin

./tune2fs -l = /dev/tripserv_vol/docu
tune2fs 1.28=20 (31-Aug-2002)
Filesystem volume name:   = <none>
Last=20 mounted on:          = <not=20 available>
Filesystem=20 UUID:         =20 7746644b-c83d-447f-9562-18dff7634d94
Filesystem magic number: =20 0xEF53
Filesystem revision #:    1 = (dynamic)
Filesystem=20 features:      has_journal filetype = needs_recovery=20 sparse_super
Filesystem=20 state:         clean
Errors=20 behavior:         =20 Continue
Filesystem OS type:      =20 Linux
Inode=20 count:           &= nbsp; =20 131072
Block=20 count:           &= nbsp; =20 524288
Reserved block count:     26214
Free=20 blocks:           =   =20 318873
Free=20 inodes:           =   =20 129020
First=20 block:           &= nbsp; =20 1
Block=20 size:           &n= bsp;  =20 1024
Fragment=20 size:           =20 1024
Blocks per = group:        =20 8192
Fragments per group:      = 8192
Inodes per=20 group:         2048
Inode = blocks per=20 group:   256
Last mount=20 time:          Wed Sep 18 = 17:13:48=20 2002
Last write = time:         =20 Wed Sep 18 17:13:48 2002
Mount=20 count:           &= nbsp; =20 33
Maximum mount count:      25
Last=20 checked:           = ; =20 Sun Mar 3 20:45:33 2002
Check=20 interval:           = 15552000=20 (6 months)
Next check = after:        =20 Fri Aug 30 21:45:33 2002
Reserved blocks = uid:      0=20 (user root)
Reserved blocks gid:      0 = (group=20 root)
First=20 inode:           &= nbsp; =20 11
Inode=20 size:           &n= bsp;  =20 128
Journal=20 UUID:           &n= bsp;=20 <none>
Journal=20 inode:            = 8
Journal = device:          =20 0x0000
First orphan inode:      =20 0

# ./tune2fs -l = /dev/tripserv_vol/pages
tune2fs=20 1.28 (31-Aug-2002)
./tune2fs: Bad magic number in super-block while = trying to=20 open /dev/tripserv_vol/pages
Couldn't find valid filesystem=20 superblock.
You have new mail in = /var/spool/mail/root

# mke2fs -n = /dev/tripserv_vol/pages
mke2fs 1.27=20 (8-Mar-2002)
Filesystem label=3D
OS type: Linux
Block = size=3D4096=20 (log=3D2)
Fragment size=3D4096 (log=3D2)
2621440 inodes, 5242880=20 blocks
262144 blocks (5.00%) reserved for the super user
First = data=20 block=3D0
160 block groups
32768 blocks per group, 32768 fragments = per=20 group
16384 inodes per group
Superblock backups stored on=20 blocks:
32768, 98304, = 163840,=20 229376, 294912, 819200, 884736, 1605632,=20 2654208,
= 4096000

----- Original Message -----
From:=20 Robin Edgar = -=20 Tripany
To: linux-lvm@sistina.com

Sent: Wednesday, September 18, = 2002 2:07=20 PM

Subject: [linux-lvm] Help! = unable to=20 mount lv's - can't see why!

Hi,

I had 4 (ide) disks in an array (and = 1 vg) of=20 which one (hde) broke. As I was not too sure of the stability of the = system, I=20 decided to do a dd of the disk byte by byte to another identical disk. = After=20 this was done (with loads of sector unreadable errors) I replaced = the old=20 disk with the new disk, rebooted the system and by all standards all = seems=20 well (see below):

Unfortunately, only the=20 /dev/tripserv_vol/docu will mount well!

/dev/tripserv_vol/pages gives the = following=20 error:

# mount /dev/tripserv_vol/pages = /c
mount: you=20 must specify the filesystem type

# mount /dev/tripserv_vol/pages /c -t = ext3
mount: wrong fs type, bad option, bad superblock on=20 /dev/tripserv_vol/pages,
       or = too many=20 mounted file systems

Anyone have any ideas why it won't=20 mount?!

Cheers,

Robin Edgar

#pvscan:

pvscan -- reading all physical = volumes (this may=20 take a while...)
pvscan -- ACTIVE   PV "/dev/hdg1" of VG=20 "tripserv_vol" [38.16 GB / 7.93 GB free]
pvscan -- = ACTIVE   PV=20 "/dev/hdh1" of VG "tripserv_vol" [38.16 GB / 8.01 GB free]
pvscan = --=20 ACTIVE   PV "/dev/hde1" of VG "tripserv_vol" [55.91 GB / 0=20 free]
pvscan -- ACTIVE   PV "/dev/hdf1" of VG = "tripserv_vol"=20 [55.91 GB / 3.37 GB free]
pvscan -- total: 4 [188.16 GB] / in use: = 4=20 [188.16 GB] / in no VG: 0 [0]

(identical output to before changing = the disks=20 around)

#pvdisplay /dev/hde1
--- Physical = volume=20 ---
PV=20 = Name           &nb= sp;  =20 /dev/hde1
VG=20 = Name           &nb= sp;  =20 tripserv_vol
PV=20 = Size           &nb= sp;  =20 55.92 GB [117266625 secs] / NOT usable 4.18 MB [LVM: 179=20 = KB]
PV#          &nb= sp;       =20 1
PV=20 = Status           &= nbsp;=20 = available
Allocatable        &= nbsp; =20 yes (but full)
Cur=20 = LV            = ;   =20 20
PE Size (KByte)       = 4096
Total=20 = PE            = ; =20 14313
Free=20 = PE            = ;  =20 0
Allocated = PE         =20 14313
PV=20 = UUID           &nb= sp;  =20 KCIKwa-3lvx-k7bj-27ks-hGlI-oZRo-5q7CjM

(also identical)

#vgck -v
vgck -- locking logical = volume=20 manager
vgck -- finding all volume group(s)
vgck -- checking = volume=20 group name "tripserv_vol"
vgck -- checking existence of volume = group=20 "tripserv_vol"
vgck -- reading volume group data for "tripserv_vol" = from=20 lvmtab
vgck -- checking volume group consistency of = "tripserv_vol" in=20 lvmtab
vgck -- VGDA of "tripserv_vol" in lvmtab is = consistent
vgck --=20 reading volume group data for "tripserv_vol" from physical = volume(s)
vgck=20 -- checking volume group consistency of "tripserv_vol" on = physical=20 volumes
vgck -- VGDA of "tripserv_vol" on physical volumes is=20 consistent
vgck -- unlocking logical volume = manager

# vgdisplay
--- Volume group = ---
VG=20 = Name           &nb= sp;  =20 tripserv_vol
VG=20 = Access           &= nbsp;=20 read/write
VG=20 = Status           &= nbsp;=20 available/resizable
VG=20 = #            =      =20 0
MAX=20 = LV            = ;   =20 255
Cur=20 = LV            = ;   =20 22
Open=20 = LV            = ;  =20 1
MAX LV = Size          =20 255.99 GB
Max=20 = PV            = ;   =20 255
Cur=20 = PV            = ;   =20 4
Act=20 = PV            = ;   =20 4
VG=20 = Size           &nb= sp;  =20 188.13 GB
PE=20 = Size           &nb= sp;  =20 4 MB
Total=20 = PE            = ; =20 48162
Alloc PE / Size       43220 / = 168.83=20 GB
Free PE / Size       4942 / = 19.30=20 GB
VG=20 = UUID           &nb= sp;  =20 KDiCWx-ae2w-oDnx-Hl5O-Amhd-fIM3-y51bIX

# vgscan -v
vgscan -- removing = "/etc/lvmtab"=20 and "/etc/lvmtab.d"
vgscan -- creating empty "/etc/lvmtab" and=20 "/etc/lvmtab.d"
vgscan -- reading all physical volumes (this may = take a=20 while...)
vgscan -- scanning for all active volume group(s) = first
vgscan=20 -- found active volume group "tripserv_vol"
vgscan -- reading data = of=20 volume group "tripserv_vol" from physical volume(s)
vgscan -- = inserting=20 "tripserv_vol" into lvmtab
vgscan -- backing up volume group=20 "tripserv_vol"
vgscan -- checking volume group name=20 "tripserv_vol"
vgscan -- checking volume group consistency of=20 "tripserv_vol"
vgscan -- checking existence of = "/etc/lvmtab.d"
vgscan --=20 storing volume group data of "tripserv_vol" in=20 "/etc/lvmtab.d/tripserv_vol.tmp"
vgscan -- storing physical volume = data of=20 "tripserv_vol" in "/etc/lvmtab.d/tripserv_vol.tmp"
vgscan -- = storing=20 logical volume data of volume group "tripserv_vol" in=20 "/etc/lvmtab.d/tripserv_vol.tmp"
vgscan -- renaming=20 "/etc/lvmtab.d/tripserv_vol.tmp" to = "/etc/lvmtab.d/tripserv_vol"
vgscan --=20 removing special files and directory for volume group = "tripserv_vol"
vgscan=20 -- creating directory and group character special file for=20 "tripserv_vol"
vgscan -- creating block device special files for=20 tripserv_vol
vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" = successfully=20 created
vgscan -- WARNING: This program does not do a VGDA backup = of your=20 volume group

#lvscan

lvscan -- ACTIVE   Original = "/dev/tripserv_vol/docu" [512 MB] striped[4]
lvscan -- = ACTIVE  =20 Original "/dev/tripserv_vol/install" [10 GB] striped[4]
lvscan --=20 ACTIVE   Original "/dev/tripserv_vol/pages" [20 GB]=20 striped[4]
lvscan --=20 = ACTIVE            = "/dev/tripserv_vol/gfx" [10 GB] striped[4]
lvscan --=20 = ACTIVE            = "/dev/tripserv_vol/sfx" [10 GB] striped[4]
lvscan --=20 = ACTIVE            = "/dev/tripserv_vol/people" [20 GB] striped[4]
lvscan -- = ACTIVE  =20 Original "/dev/tripserv_vol/dim" [2 GB] striped[4]
lvscan --=20 = ACTIVE            = "/dev/tripserv_vol/mp3" [20 GB] striped[4]
lvscan --=20 = ACTIVE            = "/dev/tripserv_vol/applications" [2 GB] striped[4]
lvscan --=20 ACTIVE   Original "/dev/tripserv_vol/code" [512 MB]=20 striped[4]
lvscan --=20 = ACTIVE            = "/dev/tripserv_vol/dumpdir" [10 GB] striped[4]
lvscan -- = ACTIVE  =20 Original "/dev/tripserv_vol/homes" [10 GB] striped[4]
lvscan --=20 ACTIVE   Original "/dev/tripserv_vol/info" [5 GB]=20 striped[4]
lvscan --=20 = ACTIVE            = "/dev/tripserv_vol/log" [252 MB] striped[3]
lvscan --=20 = ACTIVE            = "/dev/tripserv_vol/store" [608 MB] striped[4]
lvscan -- = ACTIVE  =20 Snapshot "/dev/tripserv_vol/docusnap" [492.19 MB] of=20 /dev/tripserv_vol/docu
lvscan -- ACTIVE   Snapshot=20 "/dev/tripserv_vol/installsnap" [9.84 GB] of=20 /dev/tripserv_vol/install
lvscan -- ACTIVE   Snapshot=20 "/dev/tripserv_vol/dimsnap" [1.97 GB] of = /dev/tripserv_vol/dim
lvscan --=20 ACTIVE   Snapshot "/dev/tripserv_vol/codesnap" [504 MB] of=20 /dev/tripserv_vol/code
lvscan -- ACTIVE   Snapshot=20 "/dev/tripserv_vol/pagessnap" [19.69 GB] of = /dev/tripserv_vol/pages
lvscan=20 -- ACTIVE   Snapshot "/dev/tripserv_vol/infosnap" [4.92 GB] = of=20 /dev/tripserv_vol/info
lvscan -- ACTIVE   Snapshot=20 "/dev/tripserv_vol/homessnap" [9.84 GB] of = /dev/tripserv_vol/homes
lvscan=20 -- 22 logical volumes with 168.08 GB total in 1 volume group
lvscan = -- 22=20 active logical volumes

# lvdisplay = /dev/tripserv_vol/docu
--- Logical=20 volume ---
LV=20 = Name           &nb= sp;   =20 /dev/tripserv_vol/docu
VG=20 = Name           &nb= sp;   =20 tripserv_vol
LV Write = Access       =20 read/write
LV snapshot status     source=20 = of
           &= nbsp;          =20 /dev/tripserv_vol/docusnap [active]
LV=20 = Status           &= nbsp; =20 available
LV=20 = #            =       =20 1
#=20 = open           &nb= sp;    =20 1
LV=20 = Size           &nb= sp;   =20 512 MB
Current=20 = LE            = ;=20 128
Allocated=20 LE          =20 = 128
Stripes          = ;     =20 4
Stripe size (KByte)   =20 = 4
Allocation         &nbs= p;  =20 next free
Read ahead sectors     120
Block=20 device          =20 58:0

# lvdisplay = /dev/tripserv_vol/people
---=20 Logical volume ---
LV=20 = Name           &nb= sp;   =20 /dev/tripserv_vol/people
VG=20 = Name           &nb= sp;   =20 tripserv_vol
LV Write = Access       =20 read/write
LV=20 = Status           &= nbsp; =20 available
LV=20 = #            =       =20 6
#=20 = open           &nb= sp;    =20 0
LV=20 = Size           &nb= sp;   =20 20 GB
Current=20 = LE            = ;=20 5120
Allocated=20 LE          =20 = 5120
Stripes         &nbs= p;     =20 4
Stripe size (KByte)   =20 = 4
Allocation         &nbs= p;  =20 next free
Read ahead sectors     120
Block=20 device          =20 58:5

# lvdisplay = /dev/tripserv_vol/pages
---=20 Logical volume ---
LV=20 = Name           &nb= sp;   =20 /dev/tripserv_vol/pages
VG=20 = Name           &nb= sp;   =20 tripserv_vol
LV Write = Access       =20 read/write
LV snapshot status     source=20 = of
           &= nbsp;          =20 /dev/tripserv_vol/pagessnap [active]
LV=20 = Status           &= nbsp; =20 available
LV=20 = #            =       =20 3
#=20 = open           &nb= sp;    =20 0
LV=20 = Size           &nb= sp;   =20 20 GB
Current=20 = LE            = ;=20 5120
Allocated=20 LE          =20 = 5120
Stripes         &nbs= p;     =20 4
Stripe size (KByte)   =20 = 4
Allocation         &nbs= p;  =20 next free
Read ahead sectors     120
Block=20 device          =20 58:2

tripserv:/# lvdisplay=20 /dev/tripserv_vol/pagessnap
--- Logical volume ---
LV=20 = Name           &nb= sp;   =20 /dev/tripserv_vol/pagessnap
VG=20 = Name           &nb= sp;   =20 tripserv_vol
LV Write = Access        read=20 only
LV snapshot status     active destination = for=20 /dev/tripserv_vol/pages
LV=20 = Status           &= nbsp; =20 available
LV=20 = #            =       =20 20
#=20 = open           &nb= sp;    =20 0
LV=20 = Size           &nb= sp;   =20 20 GB
Current=20 = LE            = ;=20 5120
Allocated=20 LE          =20 5120
snapshot chunk size    64 KB
Allocated to=20 snapshot 0.00% [0/19.69 GB]
Allocated to COW-table 320=20 = MB
Stripes          =      =20 4
Stripe size (KByte)   =20 = 4
Allocation         &nbs= p;  =20 next free
Read ahead sectors     120
Block=20 device          =20 58:19

# lvdisplay = /dev/tripserv_vol/docusnap
---=20 Logical volume ---
LV=20 = Name           &nb= sp;   =20 /dev/tripserv_vol/docusnap
VG=20 = Name           &nb= sp;   =20 tripserv_vol
LV Write = Access        read=20 only
LV snapshot status     active destination = for=20 /dev/tripserv_vol/docu
LV=20 = Status           &= nbsp; =20 available
LV=20 = #            =       =20 16
#=20 = open           &nb= sp;    =20 0
LV=20 = Size           &nb= sp;   =20 512 MB
Current=20 = LE            = ;=20 128
Allocated=20 LE           = 128
snapshot=20 chunk size    64 KB
Allocated to snapshot = 0.05% [256=20 KB/492.19 MB]
Allocated to COW-table 7.81=20 = MB
Stripes          =      =20 4
Stripe size (KByte)   =20 = 4
Allocation         &nbs= p;  =20 next free
Read ahead sectors     120
Block=20 device          =20 58:15

So it all looks good!

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