File Systems

Benchmarking the TOSHIBA DT01ACA300 – ZFS

Leave a Comment / File Systems, ZFS / By /

This is a repeat of a benchmark I did yesterday. The drive is a TOSHIBA DT01ACA300 3TB HDD. This is a 7200 RPM SATA III drive. Tests were run with FreeBSD 9.1 in the hardware listed below. Tonight, we’re going to do the partitions slightly differently, and try ZFS. The hardware We are testing on the following hardware: motherboard – SUPERMICRO MBD-H8SGL-O ATX Server Motherboard (Supermicro link): $224.99 CPU – AMD Opteron 6128 […]

Benchmarking the TOSHIBA DT01ACA300 – ZFS Read More »

zfsroot guides – which one to use?

2 Comments / File Systems, ZFS / By /

I started looking around for guides for creating a zfsroot. Here is what I’ve glanced at so far, along with some of my comments. I plan to create an 8 drive array, running raidz2. FreeBSD wiki page – seems OK ZFS-only booting by Ollivier Robert – based on 8.0, but I need to read it through again OPTI­MIZED FOR 4K-SECTOR DRIVES – interesting, but not set up the way I want my system

zfsroot guides – which one to use? Read More »

Benchmarking the Samsung SSD 840 PRO Series DXM03B0Q – ZFS

3 Comments / Disks, File Systems, hardware, ZFS / By /

Following on from yesterday’s benchmark, I’m adding in some ZFS tests. All hardware is the same. Of note: $ zdb | grep ashift ashift: 9 $ sudo diskinfo -v ada0 Password: ada0 512 # sectorsize 128035676160 # mediasize in bytes (119G) 250069680 # mediasize in sectors 0 # stripesize 0 # stripeoffset 248085 # Cylinders according to firmware. 16 # Heads according to firmware. 63 # Sectors according to firmware. S12PNEACB31368P # Disk

Benchmarking the Samsung SSD 840 PRO Series DXM03B0Q – ZFS Read More »

Benchmarking the TOSHIBA DT01ACA300

3 Comments / Benchmarks, Disks, File Systems, hardware / By /

Tonight I received a TOSHIBA DT01ACA300 3TB HDD. This is a 7200 RPM SATA III drive. Tests were run with FreeBSD 9.1 in the hardware listed below. The hardware We are testing on the following hardware: motherboard – SUPERMICRO MBD-H8SGL-O ATX Server Motherboard (Supermicro link): $224.99 CPU – AMD Opteron 6128 Magny-Cours 2.0GHz 8 x 512KB L2 Cache 12MB L3 Cache Socket G34 115W 8-Core Server : $284.99 RAM – Kingston 8GB 240-Pin

Benchmarking the TOSHIBA DT01ACA300 Read More »

Benchmarking the Seagate ST2000DM001

2 Comments / Benchmarks, Disks, File Systems, hardware / By /

I have a Seagate ST2000DM001 sitting in a server. I’ve run some simple tests. Results are below. Tests were run with FreeBSD 9.1 in the hardware listed below. The hardware We are testing on the following hardware: motherboard – SUPERMICRO MBD-H8SGL-O ATX Server Motherboard (Supermicro link): $224.99 CPU – AMD Opteron 6128 Magny-Cours 2.0GHz 8 x 512KB L2 Cache 12MB L3 Cache Socket G34 115W 8-Core Server : $284.99 RAM – Kingston 8GB

Benchmarking the Seagate ST2000DM001 Read More »

Aligned versus not aligned

1 Comment / File Systems, FreeBSD, Open Source / By /

In this post, we’re going to demonstrate why aligning your disk partitions can be a good idea. For starters, we’re going to go with the default alignment, do a test, then align, and redo the test. But first, in case you have no idea what I’m talking about, this randomly discovered post may be a useful primer. Create the scheme on the disk This command creates a GPT scheme on the drive. Create

Aligned versus not aligned Read More »

Aligning disk partitions for better throughput

7 Comments / File Systems, FreeBSD, Open Source / By /

During a recent install of FreeBSD 9.1 onto a gmirror, it was pointed out that my disk partitions were not aligned. Today, I’ll look at how that affects performance, both before and after alignment. Last night, I installed FreeBSD 9.1 onto a separate HDD, which I’ll use as a floater. I can attach this HDD to any system I need to work on without booting from the main HDD. In attached this HDD

Aligning disk partitions for better throughput Read More »

cannot open SCSI device ‘/dev/pass11’ – Permission denied

Leave a Comment / Backups, Bacula, File Systems, SCSI / By /

Right after getting my SCSI cable problems fixed, I was all set to run some Bacula jobs. They immediately started failing: 27-Nov 12:59 bacula-dir JobId 112458: Start Copying JobId 112458, Job=CopyToTape-Diff.2012-11-27_12.58.05_08 27-Nov 12:59 bacula-dir JobId 112458: Using Device “DTL01” 27-Nov 12:59 kraken-sd JobId 112458: Ready to read from volume “DiffAuto-2357” on device “MegaFile” (/storage/compressed/bacula/volumes). 27-Nov 12:59 kraken-sd JobId 112458: 3301 Issuing autochanger “loaded? drive 0” command. 27-Nov 12:59 kraken-sd JobId 112458: 3991 Bad

cannot open SCSI device ‘/dev/pass11’ – Permission denied Read More »

Idea from Kris Moore – PC-BSD

2 Comments / File Systems, FreeBSD, Jails, ZFS / By /

I’m sitting in the The Warden – FreeBSD and Linux Jail Management talk at EuroBSDCon 2012. He has mentioned two things, so far, that give me ideas. Evil ideas. Put each jail in a different ZFS data set – this may be useful for my jails running Bacula regression testing Schedule cron jobs to do snapshots on a regular basis – useful for snapshots, which I’m not really using at all And he’s

Idea from Kris Moore – PC-BSD Read More »

What’s using up /usr?

1 Comment / File Systems / By /

It seems the /usr partition on my dev box is filling up. But I’m not sure what is eating up the space. So let’s take a snapshot of the space and compare it later. [dan@ngaio:/usr] $ sudo du -c -d 1 . Password: 4 ./.snap 62760 ./bin 37520 ./include 93068 ./lib 184 ./libdata 35384 ./libexec 75109696 ./local 37708 ./sbin 102480 ./share 1103840 ./src 250268 ./compat 376 ./games 4 ./obj 71082728 ./home 3584112 ./ports

What’s using up /usr? Read More »

Scroll to Top