ZFS

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 […]

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Designing a new server, part II

1 Comment / FreeBSD, hardware, ZFS / By /

After posting the original plan, I’ve made a few changes, highlighted below in bold Here is what I’m thinking of getting: SUPERMICRO MBD-H8SGL-O ATX Server Motherboard : $224.99 AMD Opteron 6128 Magny-Cours 2.0GHz 8 x 512KB L2 Cache 12MB L3 Cache Socket G34 115W 8-Core Server : $259.99 Kingston 8GB 240-Pin DDR3 SDRAM ECC Registered DDR3 1600 Server Memory : 4 x $59.99 = $239.96 PC Power and Cooling Silencer MK III 600W

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Designing a new server

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I think I may have to put together a new server. For home use. Here is what I’m thinking of getting: SUPERMICRO MBD-H8SGL-O ATX Server Motherboard : $224.99 AMD Opteron 6128 Magny-Cours 2.0GHz 8 x 512KB L2 Cache 12MB L3 Cache Socket G34 115W 8-Core Server : $259.99 Kingston 8GB 240-Pin DDR3 SDRAM ECC Registered DDR3 1600 Server Memory : 4 x $59.99 = $239.96 PC Power and Cooling Silencer MK III 600W

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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

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Destroying some unneeded ZFS snapshots

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Last night, I found that I had a number of unused ZFS snapshots. I decided to destroy some of them. The first destroy locked up the system. Nagios reported everything was dead. I remotely power cycled the system. After it came back, I noticed that a scrub was in progress. This had not been initiated because of the power cycle. The scrub was a weekly automatic operation which started some hours before my

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OK, let’s compare

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OK, let’s compare the two snapshots, one taken today, the other taken on Monday. [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 4 ./tmp 18287800 ./websites 4 ./bacula-restores 1335104 ./FreshPorts 21599028 ./samba_mounts 58065982 ./jails 250788058 . 250788058 total [dan@ngaio:/usr] $ [dan@ngaio:/usr] $

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ZFS details – just in case

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I use a ZFS array for backups. The data is first copied to this array, and later copied to tape. This post contains some information which might be useful should I need to replace one of the drives in the array. We have 10 HDD in this system. Two are used in a gmirror for the base OS: ada8 ada9 Seven are active in an array: ada0 ada2 ada3 ada4 ada5 ada6 ada07

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ZFS benchmarking ideas

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I’m about to double the RAM in my ZFS system. It will go from 4GB to 8GB. Right now, I have: real memory = 4294967296 (4096 MB) avail memory = 4100382720 (3910 MB) I’m not interested in any big extensive benchmarks. I just want something simple. Hence: $ cd /storage/bonnie/ [dan@kraken:/storage/bonnie] $ ls -l total 0 [dan@kraken:/storage/bonnie] $ bonnie++ Writing a byte at a time…done Writing intelligently…done Rewriting…done Reading a byte at a

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zfs destroy

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Here I go, removing an old ZFS dataset that is no longer required. But first, some stats (which have been edited to remove non-zfs output): [dan@kraken:~] $ df -h Filesystem Size Used Avail Capacity Mounted on storage 1.4T 15G 1.4T 1% /storage storage/bacula.DO.NOT.USE 5.8T 4.4T 1.4T 76% /storage/bacula.DO.NOT.USE storage/compressed 1.4T 49K 1.4T 0% /storage/compressed storage/compressed/bacula 4.4T 3.0T 1.4T 68% /storage/compressed/bacula storage/compressed/home 1.4T 2.7G 1.4T 0% /storage/compressed/home storage/pgsql 1.4T 5.5G 1.4T 0% /storage/pgsql And

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