Freshly created logical volumes show large usage

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I created a couple of logical volumes of around 2.0G size for practice and then created GFS2 file systems in these.

There are eight physical volumes from which two logical volumes have been created.

# vgs

  VG    #PV #LV #SN Attr   VSize VFree

  IACVG   8   2   0 wz--n- 7.46g 3.46g

Each logical volume is of 2.0 GB size.

# lvs

  LV     VG    Attr       LSize Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert

  IACLV1 IACVG -wi-ao---- 2.00g                                                    

  IACLV2 IACVG -wi-ao---- 2.00g 





# mkfs.gfs2 -t IACcluster:IAClock1 -p lock_nolock -j 4 /dev/IACVG/IACLV1

# mkfs.gfs2 -t IACcluster:IAClock2 -p lock_nolock -j 4 /dev/IACVG/IACLV2

Then I mounted the volumes.

# mount /dev/IACVG/IACLV1 /mnt/lv1

# mount /dev/IACVG/IACLV2 /mnt/lv2

However, these volumes are showing large usages though I have not written anything in these.

# df -h

.................

/dev/mapper/IACVG-IACLV1  2.0G  518M  1.5G  26% /mnt/lv1

/dev/mapper/IACVG-IACLV2  2.0G  518M  1.5G  26% /mnt/lv2

I fail to get an explanation for this.

edited Dec 1 at 2:14

asked Nov 30 at 15:43

Masroor

1,60832041

The default size for the GFS2 journal is 128 MiB. You requested four journals. That's 512 MiB right there.
– AlexP
Dec 1 at 5:30

@AlexP Most probably you are right. Thanks.
– Masroor
Dec 1 at 9:10

@AlexP Do you want to convert your comment to an answer which I can upvote and accept?
– Masroor
Dec 1 at 9:50

add a comment |

up vote
0
down vote

favorite

I created a couple of logical volumes of around 2.0G size for practice and then created GFS2 file systems in these.

There are eight physical volumes from which two logical volumes have been created.

# vgs

  VG    #PV #LV #SN Attr   VSize VFree

  IACVG   8   2   0 wz--n- 7.46g 3.46g

Each logical volume is of 2.0 GB size.

# lvs

  LV     VG    Attr       LSize Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert

  IACLV1 IACVG -wi-ao---- 2.00g                                                    

  IACLV2 IACVG -wi-ao---- 2.00g 





# mkfs.gfs2 -t IACcluster:IAClock1 -p lock_nolock -j 4 /dev/IACVG/IACLV1

# mkfs.gfs2 -t IACcluster:IAClock2 -p lock_nolock -j 4 /dev/IACVG/IACLV2

Then I mounted the volumes.

# mount /dev/IACVG/IACLV1 /mnt/lv1

# mount /dev/IACVG/IACLV2 /mnt/lv2

However, these volumes are showing large usages though I have not written anything in these.

# df -h

.................

/dev/mapper/IACVG-IACLV1  2.0G  518M  1.5G  26% /mnt/lv1

/dev/mapper/IACVG-IACLV2  2.0G  518M  1.5G  26% /mnt/lv2

I fail to get an explanation for this.

edited Dec 1 at 2:14

asked Nov 30 at 15:43

Masroor

1,60832041

The default size for the GFS2 journal is 128 MiB. You requested four journals. That's 512 MiB right there.
– AlexP
Dec 1 at 5:30

@AlexP Most probably you are right. Thanks.
– Masroor
Dec 1 at 9:10

@AlexP Do you want to convert your comment to an answer which I can upvote and accept?
– Masroor
Dec 1 at 9:50

add a comment |

up vote
0
down vote

favorite

I created a couple of logical volumes of around 2.0G size for practice and then created GFS2 file systems in these.

There are eight physical volumes from which two logical volumes have been created.

# vgs

  VG    #PV #LV #SN Attr   VSize VFree

  IACVG   8   2   0 wz--n- 7.46g 3.46g

Each logical volume is of 2.0 GB size.

# lvs

  LV     VG    Attr       LSize Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert

  IACLV1 IACVG -wi-ao---- 2.00g                                                    

  IACLV2 IACVG -wi-ao---- 2.00g 





# mkfs.gfs2 -t IACcluster:IAClock1 -p lock_nolock -j 4 /dev/IACVG/IACLV1

# mkfs.gfs2 -t IACcluster:IAClock2 -p lock_nolock -j 4 /dev/IACVG/IACLV2

Then I mounted the volumes.

# mount /dev/IACVG/IACLV1 /mnt/lv1

# mount /dev/IACVG/IACLV2 /mnt/lv2

However, these volumes are showing large usages though I have not written anything in these.

# df -h

.................

/dev/mapper/IACVG-IACLV1  2.0G  518M  1.5G  26% /mnt/lv1

/dev/mapper/IACVG-IACLV2  2.0G  518M  1.5G  26% /mnt/lv2

I fail to get an explanation for this.

edited Dec 1 at 2:14

asked Nov 30 at 15:43

Masroor

1,60832041

I created a couple of logical volumes of around 2.0G size for practice and then created GFS2 file systems in these.

There are eight physical volumes from which two logical volumes have been created.

# vgs

  VG    #PV #LV #SN Attr   VSize VFree

  IACVG   8   2   0 wz--n- 7.46g 3.46g

Each logical volume is of 2.0 GB size.

# lvs

  LV     VG    Attr       LSize Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert

  IACLV1 IACVG -wi-ao---- 2.00g                                                    

  IACLV2 IACVG -wi-ao---- 2.00g 





# mkfs.gfs2 -t IACcluster:IAClock1 -p lock_nolock -j 4 /dev/IACVG/IACLV1

# mkfs.gfs2 -t IACcluster:IAClock2 -p lock_nolock -j 4 /dev/IACVG/IACLV2

Then I mounted the volumes.

# mount /dev/IACVG/IACLV1 /mnt/lv1

# mount /dev/IACVG/IACLV2 /mnt/lv2

However, these volumes are showing large usages though I have not written anything in these.

# df -h

.................

/dev/mapper/IACVG-IACLV1  2.0G  518M  1.5G  26% /mnt/lv1

/dev/mapper/IACVG-IACLV2  2.0G  518M  1.5G  26% /mnt/lv2

I fail to get an explanation for this.

partitioning mount lvm

edited Dec 1 at 2:14

asked Nov 30 at 15:43

Masroor

1,60832041

edited Dec 1 at 2:14

asked Nov 30 at 15:43

Masroor

1,60832041

edited Dec 1 at 2:14

asked Nov 30 at 15:43

Masroor

1,60832041

asked Nov 30 at 15:43

Masroor

1,60832041

asked Nov 30 at 15:43

Masroor

1,60832041

The default size for the GFS2 journal is 128 MiB. You requested four journals. That's 512 MiB right there.
– AlexP
Dec 1 at 5:30

@AlexP Most probably you are right. Thanks.
– Masroor
Dec 1 at 9:10

@AlexP Do you want to convert your comment to an answer which I can upvote and accept?
– Masroor
Dec 1 at 9:50

add a comment |

The default size for the GFS2 journal is 128 MiB. You requested four journals. That's 512 MiB right there.
– AlexP
Dec 1 at 5:30

@AlexP Most probably you are right. Thanks.
– Masroor
Dec 1 at 9:10

@AlexP Do you want to convert your comment to an answer which I can upvote and accept?
– Masroor
Dec 1 at 9:50

The default size for the GFS2 journal is 128 MiB. You requested four journals. That's 512 MiB right there.
– AlexP
Dec 1 at 5:30

@AlexP Most probably you are right. Thanks.
– Masroor
Dec 1 at 9:10

@AlexP Do you want to convert your comment to an answer which I can upvote and accept?
– Masroor
Dec 1 at 9:50

add a comment |

1 Answer
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The default size for the GFS2 journal is 128 MiB. You requested four journals (-j 4). That's 512 MiB right there.

answered Dec 1 at 10:18

AlexP

7,32711228

add a comment |

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1 Answer
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active

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1 Answer
1

active

oldest

votes

up vote
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accepted

The default size for the GFS2 journal is 128 MiB. You requested four journals (-j 4). That's 512 MiB right there.

answered Dec 1 at 10:18

AlexP

7,32711228

add a comment |

up vote
1
down vote

accepted

The default size for the GFS2 journal is 128 MiB. You requested four journals (-j 4). That's 512 MiB right there.

answered Dec 1 at 10:18

AlexP

7,32711228

add a comment |

up vote
1
down vote

accepted

The default size for the GFS2 journal is 128 MiB. You requested four journals (-j 4). That's 512 MiB right there.

answered Dec 1 at 10:18

AlexP

7,32711228

The default size for the GFS2 journal is 128 MiB. You requested four journals (-j 4). That's 512 MiB right there.

answered Dec 1 at 10:18

AlexP

7,32711228

answered Dec 1 at 10:18

AlexP

7,32711228

answered Dec 1 at 10:18

AlexP

7,32711228

answered Dec 1 at 10:18

AlexP

7,32711228

add a comment |

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