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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 8 Jun 2018
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      Whee, almost lost ~20% of the data on this filesystem two days before I intended to finally upgrade my offsite backup host to be able to back it up completely. Murphy is one hell of an asshole.

      2 replies 1 retweet 15 likes
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    2. Hector Martin‏ @marcan42 8 Jun 2018
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      Narrowly avoid disaster with the "re-create RAID array with the same parameters, assume clean, fsck and cross fingers" approach. I had some corrupted parity from a transient glitch doing major damage to the FS.

      1 reply 0 retweets 6 likes
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    3. Hector Martin‏ @marcan42 8 Jun 2018
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      I'm getting tired of RAID and traditional filesystems. Stuff doesn't scale. The backup host is going to be moving to Ceph (single-host Ceph, but hey, why not) and if that works out I might migrate my home NAS to that too.

      9 replies 0 retweets 9 likes
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    4. ᴊᴀᴍᴇꜱ ᴊᴜꜱᴛ ᴊᴀᴍᴇꜱ‏ @purpleidea 8 Jun 2018
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      Replying to @marcan42

      Why would you run a single host Ceph cluster? To gain experience? IMO mdraid is more reliable and easier to manage. Good luck!

      1 reply 0 retweets 0 likes
    5. Hector Martin‏ @marcan42 8 Jun 2018
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      Replying to @purpleidea

      mdraid does not scale. Rebuilds take forever, there's no intelligence, write-intent bitmap is nice but coarse, filesystem integrity is a bitch, no checksums, no ability to have disparate-sized disks. I have a 20TB md-raid array now and have had too many close calls.

      1 reply 0 retweets 0 likes
    6. ᴊᴀᴍᴇꜱ ᴊᴜꜱᴛ ᴊᴀᴍᴇꜱ‏ @purpleidea 8 Jun 2018
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      Replying to @marcan42

      It would be interesting to see your opinion after using Ceph for a year or so (have a blog?) in your single mode scenario. My bet is you'll be less happy, but good luck either way! (I'm assuming CephFS?) Here's an old "easy ceph setup" I did. HTH https://purpleidea.com/blog/2015/12/28/trying-out-ceph-with-oh-my-vagrant/ …

      1 reply 0 retweets 1 like
      Hector Martin‏ @marcan42 8 Jun 2018
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      Replying to @purpleidea

      FWIW I already run two Ceph clusters in production, but it will be interesting having one or two personal setups (that I can afford downtime on).

      2:41 AM - 8 Jun 2018
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      • ᴊᴀᴍᴇꜱ ᴊᴜꜱᴛ ᴊᴀᴍᴇꜱ
      0 replies 0 retweets 1 like

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