January 15th, 2006

userinfo senji
2006/01/15 18:04:00 - Lets do the disk warp again.
I've finally got an IDE HDD solution for the new cleopatra that I'm happy with – I have been using a Highpoint Rocket 100 card, but the linux HPT drivers don't support the non-RAID Rocket cards so I've been having to use the vendor supplied one which
  1. Isn't GPLed.
  2. Has to be used as a module.
So I've acquired a Silicon Image RAID card (ATA RAID cards appear to be practically dirt cheap nowadays) which after a bit of faddling seems to work and I now have a modules-free kernel again. Also, unlike the Highpoint module, the siimage module presents the drives to the kernel as IDE not SCSI meaning that the drive has been renamed from sde to hdc (for which reason I'm very glad that I used "mount by filesystem label" on this instance of cleopatra and smartctl(8) works properly.

cleopatra.thy.me.uk:~/                 # [06/01/15.18:18:11] $ 
: pts/14 -bash[24210] ; df
Filesystem            Size  Used Avail Use% Mounted on
/dev/md0              942M  173M  722M  20% /
tmpfs                 252M     0  252M   0% /dev/shm
tmpfs                  10G  8.0K   10G   1% /mnt/tmpfs
/dev/md1               14G  5.1G  8.2G  39% /mnt/aleph
/dev/md2               16G  1.8G   14G  12% /mnt/bet
/dev/hdc5             175G  118G   49G  71% /mnt/daled
/dev/sda2             897M  668M  182M  79% /mnt/rescue
cleopatra.thy.me.uk:~/                 # [06/01/15.18:18:18] $ 
: pts/14 -bash[24211] ; cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid5]
read_ahead 1024 sectors
md0 : active raid1 sdb3[1] sda3[0]
      979840 blocks [2/2] [UU]

md1 : active raid1 sdb4[1] sda4[0]
      14835904 blocks [2/2] [UU]

md2 : active raid1 sdd4[1] sdc4[0]
      16731584 blocks [2/2] [UU]

unused devices: <none>
cleopatra.thy.me.uk:~/                 # [06/01/15.18:18:21] $ 
: pts/14 -bash[24212] ; free
             total    used     free  shared  buffers   cached
Mem:        514952  279632   235320       0    25736    77472
-/+ buffers/cache:  176424   338528
Swap:     11952156       0 11952156

(compare and contrast with the previous instance of this data)

I think the only thing this machine needs now is some more ram, but 512MB CL3 ECC PC133 sticks are not cheap. And possibly an UPS.
Current Mood: [mood icon] geeky
Entry Tags: cleopatra, debian, geeky, sysadmin

< | 3 glosses | comment | > )

userinfo ex_robhu
2006/01/15 19:13:54
There is a reason ATA RAID cards are cheap (http://linux.yyz.us/sata/faq-sata-raid.html)... Most of them don't do anything in hardware.
reply | thread )
userinfo senji
2006/01/16 00:09:37
Yeah, but neither did the ones that I didn't buy four years ago; and they were significantly more expensive than the comparable plain ATA cards.
reply | parent | thread )
userinfo ex_robhu
2006/01/16 00:10:49
The MegaRAID series happens to be reasonably good and has nice open source drivers. We use them at work.
reply | parent | thread )

< | 3 glosses | comment | > )

Lets do the disk warp again. - Squaring the circle...

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