I have a 3TB disk here... sd1 at scsibus1 targ 1 lun 0: <ATA, Hitachi HUA72303, MKAO> SCSI3 0/direct fixed naa.5000cca225c5fbeb sd1: 2861588MB, 512 bytes/sector, 5860533168 sectors
... that's serving as a general media dump with a single FFS2 file system on it. Filesystem Size Used Avail Capacity Mounted on /dev/sd1d 2.7T 2.5T 63.7G 98% /export Yesterday, I experienced the odd effect that reading some files, or parts of files, from that disk became excruciatingly slow. We're talking a few kB/s here. Other files were fine. There were no kernel errors/warnings whatsoever. There were no read errors, the disk was just 100% busy and appeared to be returning data drip by drip. # atactl sd1 smartstatus No SMART threshold exceeded No change on reboot. dd(1) from the raw device was initially fast, then slowed to a crawl as it progressed. I eventually "fixed" it all by powering off the machine, jiggling the SATA connectors (all fine), and powering the machine back up. Tonight the problem is back. Something is very wrong. Given that dd if=/dev/rsd1c also seems affected, the filesystem layer can be excluded. I won't cry too much over a dying disk, but why the heck are there no error indications of any kind? Any other ideas? -- Christian "naddy" Weisgerber na...@mips.inka.de
