[TECH] SMART, SMARTCTL AND THE LONG CHECK
2006 July 23As meantioned earlier, I have my three 250 GB IDE harddrives set up like this:
md5 : active raid5 hdb8[0] hdc8[2] hda8[1]
451426304 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]
md4 : active raid5 hdb7[0] hdc7[2] hda7[1]
13992320 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]
md3 : active raid5 hda6[0] hdb6[2] hdc6[1]
8000128 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]
md2 : active raid5 hdb5[0] hdc5[2] hda5[1]
5991936 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]
md1 : active raid5 hdb3[0] hdc3[2] hda3[1]
5992064 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]
md0 : active raid1 hdb1[0] hdc1[2] hda1[1]
497856 blocks [3/3] [UUU]
/dev/md/0 471M 21M 427M 5% /boot
/dev/md/1 5.8G 2.1G 3.7G 37% /
/dev/md/2 5.8G 119M 5.6G 3% /var
/dev/md/3 7.7G 323M 7.4G 5% /opt
/dev/md/4 14G 2.4G 11G 18% /usr
/dev/md/5 431G 113G 318G 27% /data
451426304 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]
md4 : active raid5 hdb7[0] hdc7[2] hda7[1]
13992320 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]
md3 : active raid5 hda6[0] hdb6[2] hdc6[1]
8000128 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]
md2 : active raid5 hdb5[0] hdc5[2] hda5[1]
5991936 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]
md1 : active raid5 hdb3[0] hdc3[2] hda3[1]
5992064 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]
md0 : active raid1 hdb1[0] hdc1[2] hda1[1]
497856 blocks [3/3] [UUU]
/dev/md/0 471M 21M 427M 5% /boot
/dev/md/1 5.8G 2.1G 3.7G 37% /
/dev/md/2 5.8G 119M 5.6G 3% /var
/dev/md/3 7.7G 323M 7.4G 5% /opt
/dev/md/4 14G 2.4G 11G 18% /usr
/dev/md/5 431G 113G 318G 27% /data
To get regular information about the health of my discs, I use hdtest once a day. hdtest runs a S.M.A.R.T. short test on Monday through Saturday night, and a S.M.A.R.T. long test on Sunday night (well, 3 AM really).
What I didn't think of back then, at 5 AM /etc/cron.daily/ is executed which contains - among others - a run of updatedb. Well, it is now *checks the clock* 09:48 AM and updatedb is still running, the S.M.A.R.T. tests are at 80% done (hda and hdb) and 50% done (hdc) and the load is around 6 (on a dual 800 MHz machine).
I must admit I've had more fun already :(
EOF
Category: blog
Tags: Tech harddrives S.M.A.R.T.