Hi everybody,
some days ago I asked for help, becouse I got 'read_ahead not set' in
/proc/mdstat. Now I understood the problem mainly due to incorrecty
application of inattentive application of the HOWTO. I'll write my mistakes
for the benefit of other people tha
hello,
my computer is go down ( power failure )
after reboot
cat /proc/mdstat
Personalities : [3 raid1]
read_ahead not set
md0 : inactive sda2 sdb2 10241920 blocks
md1 : inactive sda7 sdb6 2049792 blocks
md2 : inactive
md3 : inactive
/sbin/ckraid /etc/raid1.conf
ckraid version 0.36.4
parsing
1028032kB
/dev/hda1 is mounted
mkraid: aborted, see the syslog and /proc/mdstat for potential clues.
This is mdstat:
Personalities :
read_ahead not set
unused devices:
I can find no reference to read_ahead in the docs. Does anyone have any clues?
Regards,
Brad
'-_ sergio _-'; [EMAIL PROTECTED]
> Subject: RE: undocumented error from /proc/mdstat: read_ahead not set
>
> You are using the "new" raid tools (version 90) without having the kernel
> patched with the "new" raid code.
>
> Kernel patches are fo
Title: RE: undocumented error from /proc/mdstat: read_ahead not set
You are using the "new" raid tools (version 90) without having the kernel patched with the "new" raid code.
Kernel patches are found in
ftp://ftp.us.kernel.org/pub/linux/daemons/raid/alpha
Clay
-
oc/mdstat for potential clues.
> >
> >[root@serek ~]# cat /proc/mdstat
> >Personalities : [1 linear] [2 raid0]
> >read_ahead not set
> >md0 : inactive
> >md1 : inactive
> >md2 : inactive
> >md3 : inactive
> >
> >what does mean "read_ahe
26588416kB
disk 1: /dev/hdd1, 26588488kB, raid superblock at 26588416kB
mkraid: aborted, see the syslog and /proc/mdstat for potential clues.
[root@serek ~]# cat /proc/mdstat
Personalities : [1 linear] [2 raid0]
read_ahead not set
md0 : inactive
md1 : inactive
md2 : inactive
md3 : inactive
what does mean
Hi,
I have noticed that the read_ahead value is set to 1024 in the md
driver. Why is this value so large? I would think a value of 128 or so
would be more appropriate.
<>< Lance.
