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15TB Storage question and problem

Link to this post 04 Nov 10

Hi, I'm new in the community, but I have some experience in the tux world... I have a question, it is possible to attach a 10-disk array (1,5 TB each one) to a 32-bit linux platform? I'd try to mount them, but the kernel boot messages show this:

sd 1:0:1:0: [sdc] Write Protect is off
sd 1:0:1:0: [sdc] Mode Sense: 9f 00 00 08
sd 1:0:1:0: [sdc] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
sd 1:0:1:1: [sdd] 0 512-byte logical blocks: (0 B/0 B)
sd 1:0:1:1: [sdd] 32768-byte physical blocks
sd 1:0:1:0: [sdc] Unsupported sector size 32768.
sd 1:0:1:1: [sdd] Write Protect is off
sd 1:0:1:1: [sdd] Mode Sense: 9f 00 00 08
sd 1:0:1:1: [sdd] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
sd 1:0:1:0: [sdc] Attached SCSI disk
sd 1:0:1:1: [sdd] Unsupported sector size 32768.
sd 1:0:1:1: [sdd] Attached SCSI disk

There are 2 volumes, one of 4096 GB (sdc) an other of 9404 GB (sdd), both with 32KB physical sector-size. The question is: it is possible? there are a way to tune the kernel to accept this really big physical sector-size?

I'd try this in a 2.60MHz Xeon single-core machine with Debian lenny 5.0 distro with a v2.6.33 custom compiled kernel.

I would appreciate any answer.

Link to this post 05 Nov 10

It depends. What is your Linux distribution+version+kernel that you are using?

Link to this post 11 Nov 10

Is at the bottom of the post, Debian Lenny 5.0, with 2.6.33 kernel, custom build, also I'd tried ubuntu 10.04 LTS server with default kernel (2.6.32-25-generic-pae), it show the same output...

Link to this post 12 Nov 10

The main issue is with the file system you are using. Since this array is almost 15TB in size, you will probably need to partition it into multiple file systems, though ext4 may handle the size.

Link to this post 10 Dec 10

Thanks, i'd make that and also mounted a software raid and it´s ok. Now I have other problem, I can't setup quotas on this device, it's a raid 0 virtual disk and this is the output when I try to activate quotas:

quotacheck: Mountpoint (or device) /storage01 not found or has no quota enabled.
quotacheck: Cannot find filesystem to check or filesystem not mounted with quota option.

And this is the line in the file fstab:

/dev/md0 /storage01 ext4 defaults,noatime,nosuid,nodev,grpquota,sync,nodiratime 0 0

Any suggestion?

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