Re: [CentOS] network raid file system/server
On 6/13/07, Farkas Levente [EMAIL PROTECTED] wrote: it's someting a big network raid5-6... storage where we have about 40partition added to the same network volume. and there is an fs over it which hide all internal network raid functionality. is there any such solution? i can't find any way to do this on our linux servers. I saw a presentation from the guy behind mogilefs. It sounds exactly like what you're looking for. -- Francois Caen ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] network raid file system/server
Feizhou wrote: In this scenario, iscsi provides the devices remotely and the server handles the raiding of the devices. can you explain it a bit more detailed? The boxes with disks are now just 'disk servers' and those disks are exported to the servers that will provide the filesystem layer. iscsi is the technology used to export the disks in this scenario. Is there a neat way to get start the partitions and get them mounted in this setup? I have a server on which I want to create /dev/md0 from two iscsi partitions. I then want to export /md0 to other servers using GFS. Do I have to hand-craft my own scripts to start the md devices at boot time and get the filesystems mounted before starting GFS, or is there already a way to do that? (I don't have a problem with doing so, but if there's already a right way to do it...) James ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] network raid file system/server
James Fidell wrote: Feizhou wrote: In this scenario, iscsi provides the devices remotely and the server handles the raiding of the devices. can you explain it a bit more detailed? The boxes with disks are now just 'disk servers' and those disks are exported to the servers that will provide the filesystem layer. iscsi is the technology used to export the disks in this scenario. Is there a neat way to get start the partitions and get them mounted in this setup? I have a server on which I want to create /dev/md0 from two iscsi partitions. I then want to export /md0 to other servers using GFS. What are you going to use to export the /dev/md0? gnbd? Does your iscsi_target have a maximum of one connection limit? Do I have to hand-craft my own scripts to start the md devices at boot time and get the filesystems mounted before starting GFS, or is there already a way to do that? (I don't have a problem with doing so, but if there's already a right way to do it...) No idea. I have not actually had a chance to get GFS working whether with iscsi or with some other device exporting solution. Sorry I cannot help here. Maybe those who have had real experience can chip in. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] network raid file system/server
On Wednesday 13 June 2007, Antonio da Silva Martins Junior wrote: - Farkas Levente [EMAIL PROTECTED] escreveu: we've a few 10-20 server in a lan each has 4-8 hdd. we'd like to create one big file server on these server hard disks and we'd like to create it in a redundant way ie: - if one (or more) of the hdd or server fails the whole filesystem still usable and consistent. ... Hi Farkas, I think a start is to look on PVFS2 (www.pvfs.org). Or maybe using nbd and softwareraid ??? Neither will eliminate servers and disks as single points of failiure. If want one filesystem overy many disks on many servers and the ability to fail a disk-volume (raid or whatever) or an entire server and still have a usable fs then you need something like GPFS with replication enabled. Either way, not a trivial config nor trivial software (GPFS for example will cost you $$$ unless you're academic). good luck, Peter pgpdlwGmw5Hby.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] network raid file system/server
Hi, Well, you can take a look around at Oracle Cluster File System. I've been using it, for a while, and so far so good. It's free, runs on top of Linux, and despite it's name , it's not a file system only for Oracle apps, and it's part of the kernel since version 2.6.16 . Check it at http://oss.oracle.com/projects/ocfs2/ Best regards, Bruno Sousa --- Mensagem Original--- On Wednesday 13 June 2007, Antonio da Silva Martins Junior wrote: - Farkas Levente [EMAIL PROTECTED] escreveu: we've a few 10-20 server in a lan each has 4-8 hdd. we'd like to create one big file server on these server hard disks and we'd like to create it in a redundant way ie: - if one (or more) of the hdd or server fails the whole filesystem still usable and consistent. ... Hi Farkas, I think a start is to look on PVFS2 (www.pvfs.org). Or maybe using nbd and softwareraid ??? Neither will eliminate servers and disks as single points of failiure. If want one filesystem overy many disks on many servers and the ability to fail a disk-volume (raid or whatever) or an entire server and still have a usable fs then you need something like GPFS with replication enabled. Either way, not a trivial config nor trivial software (GPFS for example will cost you $$$ unless you're academic). good luck, Peter ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
