On Sun, Jul 27, 2014 at 10:04:45PM +0300, Timofey Titovets wrote:
> I spend some time and rewrite zramctl for util-linux.
Thanks! Merged.
> sysfs.h powerful, but i can't understand how working sysfs.h and how i can
> implement it(?), and i think what my helper function is easier now, than
> sysfs.h realization
I have modified your code to use sysfs stuff and to use libsmartcols
in better way. So now it's more compatible with another ls-like utils
we have in util-linux. For example you can specify output columns by
--output, it makes it more friendly for scripts etc.
# /zramctl
NAME ALGORITHM DISKSIZE DATA COMPR TOTAL STREAMS MOUNTPOINT
/dev/zram1 100M 44K 876B 44K /mnt/test
/dev/zram2 123M 4K 78B 4K [SWAP]
/dev/zram3 10M 0B 0B 0B
Note that I have kernel 3.14, so things like number of compression
streams and compression algorithm are invisible for me (I going to
update and test it with new kernel this afternoon).
Anyway, zRam seems like nice project. I'll try to add support to
swapon next week. My idea is something like (in fstab):
/dev/zram0 swap swap x-zram.disksize=100M,x-zram.algorithm=lzo,auto
it means use x-* options (we use this notation for another things) to
specify zram setting. The controversial thing is that we have to call
mkswap from swapon, but it's already supported for swap
reinitialization (after system resume or on page size change etc.)
... or is it over-engineering?
Karel
--
Karel Zak <kzak@xxxxxxxxxx>
http://karelzak.blogspot.com
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