iSCSI, multiple initiators for the same LUNWindows 7 iSCSI initiator disconnect issuesESXi 4.1: how to make use of an iSCSI LUN bigger than 2 TB?iSCSI volume for hyper-vMultiple iSCSI Targets or 1 that's shared?ZFS over iSCSI high-availability solutionSAN: is it better to have separate LUNs for operating system and data of virtual machines?Multiple iSCSI LUNs to one ServerEMC NS-480 Celerra - Way to verify which iSCSI initiators are currently connected to a LUN?iscsi add a new storage machine to the san network and configure as one large diskSeeking iSCSI file copy flow clarification
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iSCSI, multiple initiators for the same LUN
Windows 7 iSCSI initiator disconnect issuesESXi 4.1: how to make use of an iSCSI LUN bigger than 2 TB?iSCSI volume for hyper-vMultiple iSCSI Targets or 1 that's shared?ZFS over iSCSI high-availability solutionSAN: is it better to have separate LUNs for operating system and data of virtual machines?Multiple iSCSI LUNs to one ServerEMC NS-480 Celerra - Way to verify which iSCSI initiators are currently connected to a LUN?iscsi add a new storage machine to the san network and configure as one large diskSeeking iSCSI file copy flow clarification
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
I have a web application that is distributed over 3 servers. These 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.
According to my research, I would need an actual filesystem on these LUNs in order to function as I intend to use it.
How would that work? How can I implement a file system for the LUN?
OS Used: Ubuntu 16.* or 18.*
storage-area-network iscsi
edited Jul 22 at 11:19
fNek
1034 bronze badges
asked Jul 21 at 18:08
Anton StafeyevAnton Stafeyev
828 bronze badges
add a comment |
I have a web application that is distributed over 3 servers. These 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.
According to my research, I would need an actual filesystem on these LUNs in order to function as I intend to use it.
How would that work? How can I implement a file system for the LUN?
OS Used: Ubuntu 16.* or 18.*
storage-area-network iscsi
edited Jul 22 at 11:19
fNek
1034 bronze badges
asked Jul 21 at 18:08
Anton StafeyevAnton Stafeyev
828 bronze badges
Hi, We need more information, especially what OS would access it.
– yagmoth555♦
Jul 21 at 18:16
@yagmoth555 sorry, added now. any other information would be useful ?
– Anton Stafeyev
Jul 21 at 18:18
add a comment |
I have a web application that is distributed over 3 servers. These 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.
According to my research, I would need an actual filesystem on these LUNs in order to function as I intend to use it.
How would that work? How can I implement a file system for the LUN?
OS Used: Ubuntu 16.* or 18.*
storage-area-network iscsi
edited Jul 22 at 11:19
fNek
1034 bronze badges
asked Jul 21 at 18:08
Anton StafeyevAnton Stafeyev
828 bronze badges
I have a web application that is distributed over 3 servers. These 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.
According to my research, I would need an actual filesystem on these LUNs in order to function as I intend to use it.
How would that work? How can I implement a file system for the LUN?
OS Used: Ubuntu 16.* or 18.*
storage-area-network iscsi
storage-area-network iscsi
edited Jul 22 at 11:19
fNek
1034 bronze badges
asked Jul 21 at 18:08
Anton StafeyevAnton Stafeyev
828 bronze badges
edited Jul 22 at 11:19
fNek
1034 bronze badges
asked Jul 21 at 18:08
Anton StafeyevAnton Stafeyev
828 bronze badges
edited Jul 22 at 11:19
fNek
1034 bronze badges
edited Jul 22 at 11:19
fNek
1034 bronze badges
edited Jul 22 at 11:19
fNek
1034 bronze badges
1034 bronze badges
asked Jul 21 at 18:08
Anton StafeyevAnton Stafeyev
828 bronze badges
asked Jul 21 at 18:08
Anton StafeyevAnton Stafeyev
828 bronze badges
asked Jul 21 at 18:08
Anton StafeyevAnton Stafeyev
828 bronze badges
828 bronze badges
Hi, We need more information, especially what OS would access it.
– yagmoth555♦
Jul 21 at 18:16
@yagmoth555 sorry, added now. any other information would be useful ?
– Anton Stafeyev
Jul 21 at 18:18
add a comment |
Hi, We need more information, especially what OS would access it.
– yagmoth555♦
Jul 21 at 18:16
@yagmoth555 sorry, added now. any other information would be useful ?
– Anton Stafeyev
Jul 21 at 18:18
Hi, We need more information, especially what OS would access it.
– yagmoth555♦
Jul 21 at 18:16
Hi, We need more information, especially what OS would access it.
– yagmoth555♦
Jul 21 at 18:16
@yagmoth555 sorry, added now. any other information would be useful ?
– Anton Stafeyev
Jul 21 at 18:18
@yagmoth555 sorry, added now. any other information would be useful ?
– Anton Stafeyev
Jul 21 at 18:18
add a comment |
3 Answers
3
active
oldest
votes
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
answered Jul 21 at 19:10
BaronSamedi1958BaronSamedi1958
7,8621 gold badge13 silver badges30 bronze badges
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.
answered Jul 21 at 18:50
MassimoMassimo
53.9k45 gold badges172 silver badges289 bronze badges
thanks man, thats exactly what i was lookign for
– Anton Stafeyev
Jul 21 at 20:51
it solved the problem partially, since ocfs2 allows storage up to 16TB, what would be a solution if my storage needs are about 60-80TB
– Anton Stafeyev
Jul 22 at 10:37
add a comment |
So after some research, I came up with few solutions that would be interesting for those who are looking to set up remote storage or a cluster.
Reconsider your network and your needs. One thing that I ran into is setting up an iscsi with cluster-aware file systems is not an easy task. Additionally GFS and OCFS2 do not have well-documented troubleshooting guide available to the public. In the case of OCFS2, you would need to be Oracle's customer and have an active support account. same with GFS2. if you are Centos user, you are stuck with online tutorials and no support for it.
Most likely it is out of your budget anyway. Consider using NFS for hobby-small-medium business. it is much easier to set up, it has plenty of documentation online.
If you really need an iscsi LUN to be shared across multiple machines, then there are 3 solutions available out there. Oracles OCFS2, Red Hat GFS2, VMFS. all 3 are cluster-aware file systems. OCFS2 is simpler to set up but requires you to have access to oracle support which is not free, GFS2 is not as simple as OCFS2 because you would have to manually set up bits of it but it also makes it more customizable. ad VMFS which is cool to use with your ESXI server to keep your VM machines there.
I hope that helps some users in the future when deciding what you actually need for your network and storage. I personally opted for NFS as storage and dedicated iscsi to ESXI server for image booting.
edited 2 days ago
peterh
4,46610 gold badges25 silver badges42 bronze badges
answered Jul 25 at 12:07
Anton StafeyevAnton Stafeyev
828 bronze badges
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
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
answered Jul 21 at 19:10
BaronSamedi1958BaronSamedi1958
7,8621 gold badge13 silver badges30 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
answered Jul 21 at 19:10
BaronSamedi1958BaronSamedi1958
7,8621 gold badge13 silver badges30 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
answered Jul 21 at 19:10
BaronSamedi1958BaronSamedi1958
7,8621 gold badge13 silver badges30 bronze badges
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
answered Jul 21 at 19:10
BaronSamedi1958BaronSamedi1958
7,8621 gold badge13 silver badges30 bronze badges
answered Jul 21 at 19:10
BaronSamedi1958BaronSamedi1958
7,8621 gold badge13 silver badges30 bronze badges
answered Jul 21 at 19:10
BaronSamedi1958BaronSamedi1958
7,8621 gold badge13 silver badges30 bronze badges
answered Jul 21 at 19:10
BaronSamedi1958BaronSamedi1958
7,8621 gold badge13 silver badges30 bronze badges
7,8621 gold badge13 silver badges30 bronze badges
add a comment |
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.
answered Jul 21 at 18:50
MassimoMassimo
53.9k45 gold badges172 silver badges289 bronze badges
thanks man, thats exactly what i was lookign for
– Anton Stafeyev
Jul 21 at 20:51
it solved the problem partially, since ocfs2 allows storage up to 16TB, what would be a solution if my storage needs are about 60-80TB
– Anton Stafeyev
Jul 22 at 10:37
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.
answered Jul 21 at 18:50
MassimoMassimo
53.9k45 gold badges172 silver badges289 bronze badges
thanks man, thats exactly what i was lookign for
– Anton Stafeyev
Jul 21 at 20:51
it solved the problem partially, since ocfs2 allows storage up to 16TB, what would be a solution if my storage needs are about 60-80TB
– Anton Stafeyev
Jul 22 at 10:37
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.
answered Jul 21 at 18:50
MassimoMassimo
53.9k45 gold badges172 silver badges289 bronze badges
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.
answered Jul 21 at 18:50
MassimoMassimo
53.9k45 gold badges172 silver badges289 bronze badges
answered Jul 21 at 18:50
MassimoMassimo
53.9k45 gold badges172 silver badges289 bronze badges
answered Jul 21 at 18:50
MassimoMassimo
53.9k45 gold badges172 silver badges289 bronze badges
answered Jul 21 at 18:50
MassimoMassimo
53.9k45 gold badges172 silver badges289 bronze badges
53.9k45 gold badges172 silver badges289 bronze badges
thanks man, thats exactly what i was lookign for
– Anton Stafeyev
Jul 21 at 20:51
it solved the problem partially, since ocfs2 allows storage up to 16TB, what would be a solution if my storage needs are about 60-80TB
– Anton Stafeyev
Jul 22 at 10:37
add a comment |
thanks man, thats exactly what i was lookign for
– Anton Stafeyev
Jul 21 at 20:51
it solved the problem partially, since ocfs2 allows storage up to 16TB, what would be a solution if my storage needs are about 60-80TB
– Anton Stafeyev
Jul 22 at 10:37
thanks man, thats exactly what i was lookign for
– Anton Stafeyev
Jul 21 at 20:51
thanks man, thats exactly what i was lookign for
– Anton Stafeyev
Jul 21 at 20:51
it solved the problem partially, since ocfs2 allows storage up to 16TB, what would be a solution if my storage needs are about 60-80TB
– Anton Stafeyev
Jul 22 at 10:37
it solved the problem partially, since ocfs2 allows storage up to 16TB, what would be a solution if my storage needs are about 60-80TB
– Anton Stafeyev
Jul 22 at 10:37
add a comment |
So after some research, I came up with few solutions that would be interesting for those who are looking to set up remote storage or a cluster.
Reconsider your network and your needs. One thing that I ran into is setting up an iscsi with cluster-aware file systems is not an easy task. Additionally GFS and OCFS2 do not have well-documented troubleshooting guide available to the public. In the case of OCFS2, you would need to be Oracle's customer and have an active support account. same with GFS2. if you are Centos user, you are stuck with online tutorials and no support for it.
Most likely it is out of your budget anyway. Consider using NFS for hobby-small-medium business. it is much easier to set up, it has plenty of documentation online.
If you really need an iscsi LUN to be shared across multiple machines, then there are 3 solutions available out there. Oracles OCFS2, Red Hat GFS2, VMFS. all 3 are cluster-aware file systems. OCFS2 is simpler to set up but requires you to have access to oracle support which is not free, GFS2 is not as simple as OCFS2 because you would have to manually set up bits of it but it also makes it more customizable. ad VMFS which is cool to use with your ESXI server to keep your VM machines there.
I hope that helps some users in the future when deciding what you actually need for your network and storage. I personally opted for NFS as storage and dedicated iscsi to ESXI server for image booting.
edited 2 days ago
peterh
4,46610 gold badges25 silver badges42 bronze badges
answered Jul 25 at 12:07
Anton StafeyevAnton Stafeyev
828 bronze badges
add a comment |
So after some research, I came up with few solutions that would be interesting for those who are looking to set up remote storage or a cluster.
Reconsider your network and your needs. One thing that I ran into is setting up an iscsi with cluster-aware file systems is not an easy task. Additionally GFS and OCFS2 do not have well-documented troubleshooting guide available to the public. In the case of OCFS2, you would need to be Oracle's customer and have an active support account. same with GFS2. if you are Centos user, you are stuck with online tutorials and no support for it.
Most likely it is out of your budget anyway. Consider using NFS for hobby-small-medium business. it is much easier to set up, it has plenty of documentation online.
If you really need an iscsi LUN to be shared across multiple machines, then there are 3 solutions available out there. Oracles OCFS2, Red Hat GFS2, VMFS. all 3 are cluster-aware file systems. OCFS2 is simpler to set up but requires you to have access to oracle support which is not free, GFS2 is not as simple as OCFS2 because you would have to manually set up bits of it but it also makes it more customizable. ad VMFS which is cool to use with your ESXI server to keep your VM machines there.
I hope that helps some users in the future when deciding what you actually need for your network and storage. I personally opted for NFS as storage and dedicated iscsi to ESXI server for image booting.
edited 2 days ago
peterh
4,46610 gold badges25 silver badges42 bronze badges
answered Jul 25 at 12:07
Anton StafeyevAnton Stafeyev
828 bronze badges
add a comment |
So after some research, I came up with few solutions that would be interesting for those who are looking to set up remote storage or a cluster.
Reconsider your network and your needs. One thing that I ran into is setting up an iscsi with cluster-aware file systems is not an easy task. Additionally GFS and OCFS2 do not have well-documented troubleshooting guide available to the public. In the case of OCFS2, you would need to be Oracle's customer and have an active support account. same with GFS2. if you are Centos user, you are stuck with online tutorials and no support for it.
Most likely it is out of your budget anyway. Consider using NFS for hobby-small-medium business. it is much easier to set up, it has plenty of documentation online.
If you really need an iscsi LUN to be shared across multiple machines, then there are 3 solutions available out there. Oracles OCFS2, Red Hat GFS2, VMFS. all 3 are cluster-aware file systems. OCFS2 is simpler to set up but requires you to have access to oracle support which is not free, GFS2 is not as simple as OCFS2 because you would have to manually set up bits of it but it also makes it more customizable. ad VMFS which is cool to use with your ESXI server to keep your VM machines there.
I hope that helps some users in the future when deciding what you actually need for your network and storage. I personally opted for NFS as storage and dedicated iscsi to ESXI server for image booting.
edited 2 days ago
peterh
4,46610 gold badges25 silver badges42 bronze badges
answered Jul 25 at 12:07
Anton StafeyevAnton Stafeyev
828 bronze badges
So after some research, I came up with few solutions that would be interesting for those who are looking to set up remote storage or a cluster.
Reconsider your network and your needs. One thing that I ran into is setting up an iscsi with cluster-aware file systems is not an easy task. Additionally GFS and OCFS2 do not have well-documented troubleshooting guide available to the public. In the case of OCFS2, you would need to be Oracle's customer and have an active support account. same with GFS2. if you are Centos user, you are stuck with online tutorials and no support for it.
Most likely it is out of your budget anyway. Consider using NFS for hobby-small-medium business. it is much easier to set up, it has plenty of documentation online.
If you really need an iscsi LUN to be shared across multiple machines, then there are 3 solutions available out there. Oracles OCFS2, Red Hat GFS2, VMFS. all 3 are cluster-aware file systems. OCFS2 is simpler to set up but requires you to have access to oracle support which is not free, GFS2 is not as simple as OCFS2 because you would have to manually set up bits of it but it also makes it more customizable. ad VMFS which is cool to use with your ESXI server to keep your VM machines there.
I hope that helps some users in the future when deciding what you actually need for your network and storage. I personally opted for NFS as storage and dedicated iscsi to ESXI server for image booting.
edited 2 days ago
peterh
4,46610 gold badges25 silver badges42 bronze badges
answered Jul 25 at 12:07
Anton StafeyevAnton Stafeyev
828 bronze badges
edited 2 days ago
peterh
4,46610 gold badges25 silver badges42 bronze badges
edited 2 days ago
peterh
4,46610 gold badges25 silver badges42 bronze badges
edited 2 days ago
peterh
4,46610 gold badges25 silver badges42 bronze badges
4,46610 gold badges25 silver badges42 bronze badges
answered Jul 25 at 12:07
Anton StafeyevAnton Stafeyev
828 bronze badges
answered Jul 25 at 12:07
Anton StafeyevAnton Stafeyev
828 bronze badges
answered Jul 25 at 12:07
Anton StafeyevAnton Stafeyev
828 bronze badges
828 bronze badges
add a comment |
add a comment |
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Hi, We need more information, especially what OS would access it.
– yagmoth555♦
Jul 21 at 18:16
@yagmoth555 sorry, added now. any other information would be useful ?
– Anton Stafeyev
Jul 21 at 18:18