New oleg firmware version

[MercuryV]

Do you guys think it's a good idea to go for a 3TB EXT4 formatted disk?
I'm willing to build myself a special brew firmware with CONFIG_LBD enabled if necessary.

Technically, 3TB disk will work with LBD enabled (there is a success story, in russian) and ext4 support is stable enough (I use ext4 for five months).
But I do not think it's a good idea - to use a high capacity drive on router at low speed. You decide

[wpte]

Technically, 3TB disk will work with LBD enabled (there is a success story, in russian) and ext4 support is stable enough (I use ext4 for five months).
But I do not think it's a good idea - to use a high capacity drive on router at low speed. You decide

I don't care too much about the speed thing, that'll be allright
But tbh, why not enable LBD by default? I mean EFI is enabled by default, to support GPT.
Obviously it adds a little extra size, but not that much imho.

[MercuryV]

But tbh, why not enable LBD by default? ... Obviously it adds a little extra size, but not that much imho.

lly wrote that CPU load is slightly increased too

[wpte]

lly wrote that CPU load is slightly increased too

hmm... that's indeed a downside.
I might consider a 2TB disk then... too bad the price/gb is a lot higher for those drives

[MercuryV]

I might consider a 2TB disk then... too bad the price/gb is a lot higher for those drives

Can you buy 3TB HDD with a sort of money-back guarantee?

[wpte]

Can you buy 3TB HDD with a sort of money-back guarantee?

In the Netherlands we have a law for online shopping.
You can return something until 14 days after you received it, no questions asked. You might have to pay refurbishment costs if you scratch it or something though
If I want to return it, it's going to take a long long time with dban though

[MercuryV]

In the Netherlands we have a law for online shopping.
You can return something until 14 days after you received it, no questions asked.

Then try and share results

[wpte]

Then try and share results

Still need to wait for it to be in stock again... almost 2 weeks till it is.
I was looking at this bad boy btw: http://www.wdc.com/en/products/products.aspx?id=240

[wpte]

I'm playing around with EXT4 a bit, and I received this kernel error:

Oct 13 19:10:45 kernel: Call Trace:
Oct 13 19:10:45 kernel: [<80266a18>] dump_stack+0x8/0x34
Oct 13 19:10:45 kernel: [<800a0fc0>] __getblk+0x310/0x320
Oct 13 19:10:45 kernel: [<800a1038>] __bread+0x1c/0x1ac
Oct 13 19:10:45 kernel: [<c02cc434>] ext4_group_desc_csum_verify+0x61c/0x2e18 [ext4]
Oct 13 19:10:45 kernel: EXT4-fs (sdc1): unable to read superblock

using r4680

I created the partition like this:

mke2fs -t ext4 /dev/sdb1

on the router.

I tried to make the ext4 partition with gparted
and it uses the command:

mkfs.ext4 -j -O extend -L "" /dev/sdb1

Also gave me the same error.

Either way the drive shows up at my pc correctly and is usable



edit:
on r4656 it seems to work. I'll try higher revisions tomorrow

[lly]

I'm playing around with EXT4 a bit, and I received this kernel error:


using r4680

Probably it broken in r4667. Backport can be incomplete
Try to remove kernel-2.6/150-fs-ext4-updates7.patch before kernel tree prepare. Please report if it help.

[wpte]

Probably it broken in r4667. Backport can be incomplete
Try to remove kernel-2.6/150-fs-ext4-updates7.patch before kernel tree prepare. Please report if it help.

Yes, with kernel-2.6/150-fs-ext4-updates7.patch removed it seems to work fine.
I've just compiled the modules, and loaded them up.

When I place the modules in /opt/lib/modules/2.6.22.19 it even automatically modprobes them, nice
I did unload the old modules by rmmod ext4, crc16 and jbd2.

I must say I like ext4 on the router so far. It seems to give a better performance in big file and directory situations. In ext3 it takes a long time to even list the files for some reason.
Also I was able to get about 0.5MB/s extra speed trough samba.

Eventually I want to move my /opt partition onto a ssd (with mlc memory) to save some energy and make my harddisk live a bit longer.

[wpte]

So I've bought a 4TB harddrive: http://www.wdc.com/en/products/products.aspx?id=870
I formatted it with EXT4 under linux mint 13 with kernel 3.5.3 with gparted. I rounded the sizes to MiB.
When I plugged it in my RT-N16 it was just plug and play, it instantly worked

now I just need to wait for my 950GB to transfer to my new drive

[wpte]

I've transferred over 400GB already, but I did noticed some hiccups.
EXT4 seems to work well overall, good performance etc.
But after a while (seems almost random) I get a segmentation fault in cp, the drive becomes inaccessible and the router is not able to umount it, even when the drive is removed.
I don't see any oops, maybe I should turn extra debugging on?
The router is also not able to reboot after the segfault.

I'm using r4695 btw.

[staticroute]

I've transferred over 400GB already, but I did noticed some hiccups.
EXT4 seems to work well overall, good performance etc.
But after a while (seems almost random) I get a segmentation fault in cp, the drive becomes inaccessible and the router is not able to umount it, even when the drive is removed.
I don't see any oops, maybe I should turn extra debugging on?
The router is also not able to reboot after the segfault.

I'm using r4695 btw.

Only debugging can help. Did you try the same on regular Linux workstation or Windows?

[wpte]

Only debugging can help. Did you try the same on regular Linux workstation or Windows?

Yes I did a full check (sector by sector) of the drive before I dumped all my data on it
I'm copying again, and I have a bit of a nasty memory leak feeling.
If it's a leak, the leak is probably small because the used memory is increased bit by bit very slowly.