Disks

smartd: Device: 8 Currently unreadable (pending) sectors

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I noticed these messages this morning, on the new server: $ grep smartd /var/log/messages Jul 25 11:35:29 varm smartd[813]: Device: /dev/da15 [SAT], 8 Currently unreadable (pending) sectors Jul 25 11:35:29 varm smartd[813]: Device: /dev/da15 [SAT], 10 Offline uncorrectable sectors Jul 25 12:05:28 varm smartd[813]: Device: /dev/da15 [SAT], 8 Currently unreadable (pending) sectors Jul 25 12:35:29 varm smartd[813]: Device: /dev/da15 [SAT], 8 Currently unreadable (pending) sectors Jul 25 13:05:29 varm smartd[813]: Device: /dev/da15 [SAT], […]

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Adding two new drives (SSD) to an existing ZFS system

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I haven’t tested this yet, but I’ve installed the hardware. The real test will come after a reboot and actual use of the new drives. NOTE: Although this claims to be creating a new ZIL (SLOG) do not believe it. In fact, stop reading right here. There is nothing of use below. What will they be used for? These drives are intended for ZIL (the ZFS Intent Log). This can speed up writes.

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ZFS: raidz2 with 8 or 10 disks?

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The traditional thoughts on ZFS are to have arrays which are a power-of-2 when it comes to number of disks. That means 2, 4, 8, etc. But for raidz1, that would be 3, 5, 9. For my choice of raidz2, it would be 4, 6, and 10. In the system I’m building up now, I have an 8-port LSI SATA/SAS 9211-8i 6Gb/s card. I can add two more HDD by attaching them to

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smartctl: FAILING_NOW

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I noticed this in my logs today: May 22 14:04:39 bast smartd[1577]: Device: /dev/ad0, Failed SMART usage Attribute: 9 Power_On_Hours. Oh. Really? I looked at the output of smartctl and found: This HDD is part of a gmirror: $ gmirror status Name Status Components mirror/gm0 COMPLETE ad0 ad2 How’s ad2 doing? That seems OK. Regardless of the status, I can do nothing for a week. I’m out of town. I do have several

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The Bacula Tutorial jail server

Leave a Comment / Backups, Bacula, BSDCan, Conventions, DHCP, Disks, File Systems, FreeBSD, Jails, NAT, Operating Systems, pf, PostgreSQL, ssh, ZFS / By /

One of the challenges of providing hands-on demonstrations is giving everyone their own sandbox to play in. I don’t want people to spend time on installing software. I want people to learn about the software in question, specifically Bacula. With this in mind, I’ve been building up a solution based on FreeBSD 9.1, ZFS, and jails. My solution is pretty nifty, but I don’t think it’s anything special. The key is simplicity. The

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same HDD, different server, +50% performance hit

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As you’ll no doubt know, I’ve recently bought two new computer, and built them up. I’ve settled on the Toshiba 3TB DT01ACA300 HDD as my drive of choice for these systems. I ran a few tests recently and found some interesting results. I haven’t published them here yet. My main test is a database load. I just take an 8GB text file and create a PostgreSQL database from it. The file in question

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This harddrive is getting on in life

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While on a recent trip, logcheck started telling me about a problem: Mar 19 07:26:55 bast smartd[1573]: Device: /dev/ad0, Failed SMART usage Attribute: 9 Power_On_Hours. Looking at the full output: On line 59, you’ll see that this drive has been in use for 7.4 years. Other than that, it seems to be OK. This link seems to indicate there is nothing to worry about. This system dates from at least October 2005. It

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