#22666: zram doesn't work with lz4 on big endian machines
--------------------------+--------------------------------
Reporter: jhalfmoon@… | Owner: developers
Type: defect | Status: new
Priority: normal | Milestone:
Component: kernel | Version: Chaos Calmer 15.05
Resolution: | Keywords: zram lz4
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Comment (by hojuruku):
Works for me bro on trunk.
Hint if you want to create a new zram device you can do it using the
hotadd feature not reloading the module. That might solve your problem.
rtfm the zram.txt document bundled with the linux kernel.
https://www.kernel.org/doc/Documentation/blockdev/zram.txt
7) Add/remove zram devices
zram provides a control interface, which enables dynamic (on-demand)
device
addition and removal.
In order to add a new /dev/zramX device, perform read operation on
hot_add
attribute. This will return either new device's device id (meaning that
you
can use /dev/zram<id>) or error code.
Example:
cat /sys/class/zram-control/hot_add
1
To remove the existing /dev/zramX device (where X is a device id)
execute
echo X > /sys/class/zram-control/hot_remove
```
cd /sys/block/zram1
echo 1 > reset
echo lz4 > comp_algorithm
echo 4096K > disksize
mkfs.ext2 -b 4096 /dev/zram1
mkdir /mnt/foo
mount -t ext4 /dev/zram1 /tmp/foo
```
And the filesytem works fine.
Besides you want to use lzo for swap and lz4 for mounting /tmp on ext4.
I'm working on a patch for procd zram /tmp to use busybox only to get the
job done. No block mount stuff.
--
Ticket URL: <https://dev.openwrt.org/ticket/22666#comment:1>
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