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ISCSI, multiple initiaros for the same lun

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1

i have already asked question regarding ISCSI and after reading about for a while i came up with few questions.

I have a web application that is distributed over 3 servers. this 3 servers need a shared storage to access files. Since iscsi is just a protocol not a filesystem it will not have any implementation of locking files. so if i just connect it as it is i will just destroy all of the data.

I researched this question and it turns out i would need an actual filesystem on this luns in order to function as i am intending to use it.

Can any one direct me to a source which explains me how does it work, and how to implement a file system for the LUN.

OS Used: Ubuntu 16.* or 18.*

Big thanks in advance

storage-area-network iscsi

share|improve this question

edited 8 hours ago

Anton Stafeyev

asked 8 hours ago

Anton StafeyevAnton Stafeyev

3577 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Hi, We need more information, especially what OS would access it.
  
  – yagmoth555♦
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @yagmoth555 sorry, added now. any other information would be useful ?
  
  – Anton Stafeyev
  8 hours ago
  

  
  
  
  

add a comment | 

1

i have already asked question regarding ISCSI and after reading about for a while i came up with few questions.

I have a web application that is distributed over 3 servers. this 3 servers need a shared storage to access files. Since iscsi is just a protocol not a filesystem it will not have any implementation of locking files. so if i just connect it as it is i will just destroy all of the data.

I researched this question and it turns out i would need an actual filesystem on this luns in order to function as i am intending to use it.

Can any one direct me to a source which explains me how does it work, and how to implement a file system for the LUN.

OS Used: Ubuntu 16.* or 18.*

Big thanks in advance

storage-area-network iscsi

share|improve this question

edited 8 hours ago

Anton Stafeyev

asked 8 hours ago

Anton StafeyevAnton Stafeyev

3577 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Hi, We need more information, especially what OS would access it.
  
  – yagmoth555♦
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @yagmoth555 sorry, added now. any other information would be useful ?
  
  – Anton Stafeyev
  8 hours ago
  

  
  
  
  

add a comment | 

i have already asked question regarding ISCSI and after reading about for a while i came up with few questions.

I have a web application that is distributed over 3 servers. this 3 servers need a shared storage to access files. Since iscsi is just a protocol not a filesystem it will not have any implementation of locking files. so if i just connect it as it is i will just destroy all of the data.

I researched this question and it turns out i would need an actual filesystem on this luns in order to function as i am intending to use it.

Can any one direct me to a source which explains me how does it work, and how to implement a file system for the LUN.

OS Used: Ubuntu 16.* or 18.*

Big thanks in advance

storage-area-network iscsi

share|improve this question

edited 8 hours ago

Anton Stafeyev

asked 8 hours ago

Anton StafeyevAnton Stafeyev

3577 bronze badges

share|improve this question

edited 8 hours ago

Anton Stafeyev

asked 8 hours ago

Anton StafeyevAnton Stafeyev

3577 bronze badges

share|improve this question

edited 8 hours ago

Anton Stafeyev

asked 8 hours ago

Anton StafeyevAnton Stafeyev

3577 bronze badges

asked 8 hours ago

Anton StafeyevAnton Stafeyev

3577 bronze badges

asked 8 hours ago

Anton StafeyevAnton Stafeyev

3577 bronze badges

2 Answers
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2

Generally speaking, you need a cluster in order to share storage between multiple systems (unless you want one of them to act as a file server).

I don't actually know anything about building clusters on Ubuntu, but this looks promising: http://manpages.ubuntu.com/manpages/cosmic/man7/ocfs2.7.html.

share|improve this answer

answered 7 hours ago

MassimoMassimo

53.8k4545 gold badges172172 silver badges289289 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  thanks man, thats exactly what i was lookign for
  
  – Anton Stafeyev
  5 hours ago
  

  
  
  
  

add a comment | 

1

You need to have some sort of either a clustered file system or distributed lock manager to avoid metadata damage done to your file system with concurrent writes.

There's a good summary of this issue on StarWind forum.

https://forums.starwindsoftware.com/viewtopic.php?f=5&t=1392

share|improve this answer

answered 7 hours ago

BaronSamedi1958BaronSamedi1958

7,71711 gold badge1313 silver badges2929 bronze badges

add a comment | 

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2

Generally speaking, you need a cluster in order to share storage between multiple systems (unless you want one of them to act as a file server).

I don't actually know anything about building clusters on Ubuntu, but this looks promising: http://manpages.ubuntu.com/manpages/cosmic/man7/ocfs2.7.html.

share|improve this answer

answered 7 hours ago

MassimoMassimo

53.8k4545 gold badges172172 silver badges289289 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  thanks man, thats exactly what i was lookign for
  
  – Anton Stafeyev
  5 hours ago
  

  
  
  
  

add a comment | 

2

Generally speaking, you need a cluster in order to share storage between multiple systems (unless you want one of them to act as a file server).

I don't actually know anything about building clusters on Ubuntu, but this looks promising: http://manpages.ubuntu.com/manpages/cosmic/man7/ocfs2.7.html.

share|improve this answer

answered 7 hours ago

MassimoMassimo

53.8k4545 gold badges172172 silver badges289289 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  thanks man, thats exactly what i was lookign for
  
  – Anton Stafeyev
  5 hours ago
  

  
  
  
  

add a comment | 

Generally speaking, you need a cluster in order to share storage between multiple systems (unless you want one of them to act as a file server).

I don't actually know anything about building clusters on Ubuntu, but this looks promising: http://manpages.ubuntu.com/manpages/cosmic/man7/ocfs2.7.html.

share|improve this answer

answered 7 hours ago

MassimoMassimo

53.8k4545 gold badges172172 silver badges289289 bronze badges

share|improve this answer

answered 7 hours ago

MassimoMassimo

53.8k4545 gold badges172172 silver badges289289 bronze badges

answered 7 hours ago

MassimoMassimo

53.8k4545 gold badges172172 silver badges289289 bronze badges

answered 7 hours ago

MassimoMassimo

53.8k4545 gold badges172172 silver badges289289 bronze badges

1

You need to have some sort of either a clustered file system or distributed lock manager to avoid metadata damage done to your file system with concurrent writes.

There's a good summary of this issue on StarWind forum.

https://forums.starwindsoftware.com/viewtopic.php?f=5&t=1392

share|improve this answer

answered 7 hours ago

BaronSamedi1958BaronSamedi1958

7,71711 gold badge1313 silver badges2929 bronze badges

add a comment | 

1

You need to have some sort of either a clustered file system or distributed lock manager to avoid metadata damage done to your file system with concurrent writes.

There's a good summary of this issue on StarWind forum.

https://forums.starwindsoftware.com/viewtopic.php?f=5&t=1392

share|improve this answer

answered 7 hours ago

BaronSamedi1958BaronSamedi1958

7,71711 gold badge1313 silver badges2929 bronze badges

add a comment | 

You need to have some sort of either a clustered file system or distributed lock manager to avoid metadata damage done to your file system with concurrent writes.

There's a good summary of this issue on StarWind forum.

https://forums.starwindsoftware.com/viewtopic.php?f=5&t=1392

share|improve this answer

answered 7 hours ago

BaronSamedi1958BaronSamedi1958

7,71711 gold badge1313 silver badges2929 bronze badges

share|improve this answer

answered 7 hours ago

BaronSamedi1958BaronSamedi1958

7,71711 gold badge1313 silver badges2929 bronze badges

answered 7 hours ago

BaronSamedi1958BaronSamedi1958

7,71711 gold badge1313 silver badges2929 bronze badges

answered 7 hours ago

BaronSamedi1958BaronSamedi1958

7,71711 gold badge1313 silver badges2929 bronze badges