USB Storage support

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smitty16
DD-WRT Novice


Joined: 25 Feb 2017
Posts: 20

PostPosted: Sun Sep 15, 2019 14:44    Post subject: USB Storage support Reply with quote
Hello Community,

I've a General Question which I can't find an answer for Rolling Eyes. Can anyone tell me, wether DD-WRT supports usb storage devices with partions on it larger than 16TB in size? Thank you very much
regards
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smitty16
DD-WRT Novice


Joined: 25 Feb 2017
Posts: 20

PostPosted: Mon Sep 16, 2019 7:08    Post subject: Reply with quote
@jxm

thx for your reply, but in case your answers only consist of counterquestions then you should keep your breath and keep them by yourself. It was a simple Question, and if you don't know the answer, why not simply keep silent then Question Besides my usb drive I'm Talking about is a raid 5 drive with about 30TB. So Long ...
Wildlion
DD-WRT Guru


Joined: 24 May 2016
Posts: 852

PostPosted: Mon Sep 16, 2019 22:44    Post subject: Reply with quote
DD-WRT supports ext4, so in theory it should be able to.

Have you tried it?
kernel-panic69
DD-WRT Guru


Joined: 08 May 2018
Posts: 7278
Location: Texas, USA

PostPosted: Tue Sep 17, 2019 1:17    Post subject: Reply with quote
Wildlion wrote:
DD-WRT supports ext4, so in theory it should be able to.

Have you tried it?


Not across the board. Depends on the device and flash size.
smitty16
DD-WRT Novice


Joined: 25 Feb 2017
Posts: 20

PostPosted: Tue Sep 17, 2019 6:17    Post subject: Reply with quote
thank you very much for your answers. Yes of Course I tried ext4, since ext2/3 are not even able to grow above 16TB. ext4 does if the filesystem is set to 64bit (4K Blocks) with e2fsprogs and resize2fs. I could get e2fsprogs with entware tuo my DD-WRT (v3.0) and I could even prepare the filesystem within DD-WRT (ssh) this way, but when I try to mount the Partition I get the message 'filesystem too large'. Maybe it's the Linux kernel or the processor of my router (ARMv7), I don't know but it seems to be not possible. But anyway, thank you very much for your inouts.

regards
Wildlion
DD-WRT Guru


Joined: 24 May 2016
Posts: 852

PostPosted: Wed Sep 18, 2019 0:42    Post subject: Reply with quote
@kernel-panic69 very true, do not disagree

smitty16, sorry that it does not work, would have to dig through the code itself to see if it is limited somewhere.
scar1943
DD-WRT User


Joined: 10 Nov 2018
Posts: 327
Location: South Carolina

PostPosted: Mon Sep 23, 2019 14:41    Post subject: Reply with quote
kernel-panic69 wrote:
Wildlion wrote:
DD-WRT supports ext4, so in theory it should be able to.

Have you tried it?


Not across the board. Depends on the device and flash size.


Folks,

I also, would like the know the answer as well. Its an interesting question.

I use the USB port and external drive for assorted non-critical backups. Video game saves, assorted OS images, ancient useless software that I can't seem to toss. Sorta' makes me a data hoarder. Wink

Anyone discover a limit (other than the grueling USB lack of speed)? I'm going to assume the limit is the file system limits, not due to the firmware?
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