Comments on: Google Implements ext4 filesystem on their servers http://techie-buzz.com/foss/google-implements-ext4.html Know your technology head on Fri, 25 May 2012 13:57:52 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: jonny rockethttp://techie-buzz.com/foss/google-implements-ext4.html/comment-page-1#comment-255276 jonny rocket Thu, 03 Feb 2011 19:11:48 +0000 http://techie-buzz.com/?p=16855#comment-255276 yes! i can see/feel a big diff between ext3 and ext4. yes! i can see/feel a big diff between ext3 and ext4.

]]> By: Sathya Bhathttp://techie-buzz.com/foss/google-implements-ext4.html/comment-page-1#comment-56019 Sathya Bhat Sat, 06 Feb 2010 17:15:27 +0000 http://techie-buzz.com/?p=16855#comment-56019 Thanks, Benjamin. I'll hit Phoronix and see what I can find. Thanks, Benjamin. I'll hit Phoronix and see what I can find.

]]> By: Benjamin Vander Jagthttp://techie-buzz.com/foss/google-implements-ext4.html/comment-page-1#comment-55878 Benjamin Vander Jagt Sat, 06 Feb 2010 01:13:38 +0000 http://techie-buzz.com/?p=16855#comment-55878 I would love to, but unfortunately it's unlikely that any authoritative article on the topic exists. Because Reiser4 isn't in the mainline kernel, few mainstream distributions support it, so few real-world configurations use it. There's some word about Reiser4 making it into the kernel somewhere around the second half of this year, but that's not set in stone, either. However, a colleague of mine does have some emails from kernel developers that state their dissatisfaction with the reliability of Ext4. I'll ask him at the beginning of the week. (I won't see him for a little while, since we're getting close to three feet of snow tonight.) If you're curious about the Reiser4 inroads into the kernel, be sure to check Phoronix, as that's where I read it. I would love to, but unfortunately it's unlikely that any authoritative article on the topic exists. Because Reiser4 isn't in the mainline kernel, few mainstream distributions support it, so few real-world configurations use it. There's some word about Reiser4 making it into the kernel somewhere around the second half of this year, but that's not set in stone, either.

However, a colleague of mine does have some emails from kernel developers that state their dissatisfaction with the reliability of Ext4. I'll ask him at the beginning of the week. (I won't see him for a little while, since we're getting close to three feet of snow tonight.)

If you're curious about the Reiser4 inroads into the kernel, be sure to check Phoronix, as that's where I read it.

]]> By: Sathyahttp://techie-buzz.com/foss/google-implements-ext4.html/comment-page-1#comment-55862 Sathya Fri, 05 Feb 2010 23:43:10 +0000 http://techie-buzz.com/?p=16855#comment-55862 Hmm, interesting that. I do agree about recovering from data loss can be a nightmare - more so when you can't seem to find some data when you *really* need it the most. Do drop in a comment if you can find an article/post featuring some real world data on Ext4 vs Reiser4, I'm sure it'll make for an interesting read, atleast to me. Hmm, interesting that. I do agree about recovering from data loss can be a nightmare – more so when you can't seem to find some data when you *really* need it the most.

Do drop in a comment if you can find an article/post featuring some real world data on Ext4 vs Reiser4, I'm sure it'll make for an interesting read, atleast to me.

]]> By: Benjamin Vander Jagthttp://techie-buzz.com/foss/google-implements-ext4.html/comment-page-1#comment-50508 Benjamin Vander Jagt Sat, 16 Jan 2010 17:26:53 +0000 http://techie-buzz.com/?p=16855#comment-50508 Hi, I did have a long-term backup. The first time it failed, though, I had a backup onto another mirrored Ext4. I started pulling data back off of that, when it fell apart as well. I lost some data, and therefore some work hours, but nothing irreplaceable was lost. The time loss recovering from data disasters has certainly made any speed improvements meaningless. Thanks for your concern. I don't know what Google's planning, but at least this means that Google will probably spend the time and money necessary to make Ext4 more reliable. It seems as though Ext4 is getting -slower- during its development, and I'm running across more critical bugs as I continue applying updates and patches. Reiser4, on the other hand, has never had data loss problems since its official release, and new versions improve speed. I really don't want to bring up the old Ext vs Reiser flame war, but in all of my experience I just can't find proof that Ext4 is as reliable as the rhetoric suggests. Hi, I did have a long-term backup. The first time it failed, though, I had a backup onto another mirrored Ext4. I started pulling data back off of that, when it fell apart as well. I lost some data, and therefore some work hours, but nothing irreplaceable was lost. The time loss recovering from data disasters has certainly made any speed improvements meaningless. Thanks for your concern.

I don't know what Google's planning, but at least this means that Google will probably spend the time and money necessary to make Ext4 more reliable. It seems as though Ext4 is getting -slower- during its development, and I'm running across more critical bugs as I continue applying updates and patches. Reiser4, on the other hand, has never had data loss problems since its official release, and new versions improve speed. I really don't want to bring up the old Ext vs Reiser flame war, but in all of my experience I just can't find proof that Ext4 is as reliable as the rhetoric suggests.

]]> By: Sathya Bhathttp://techie-buzz.com/foss/google-implements-ext4.html/comment-page-1#comment-50491 Sathya Bhat Sat, 16 Jan 2010 15:26:18 +0000 http://techie-buzz.com/?p=16855#comment-50491 Ouch, data loss is bad, no matter what. I trust you had a backup ? I trust Google would have redundant power backups and storage devices to counter any dataloss. Ouch, data loss is bad, no matter what. I trust you had a backup ?
I trust Google would have redundant power backups and storage devices to counter any dataloss.

]]> By: Benjamin Vander Jagthttp://techie-buzz.com/foss/google-implements-ext4.html/comment-page-1#comment-50487 Benjamin Vander Jagt Sat, 16 Jan 2010 14:47:52 +0000 http://techie-buzz.com/?p=16855#comment-50487 I wish I could get word to Google. Ext4 has been terribly unreliable and especially bad at recovering from crashes. In my server, it seems to become less reliable the more data and the larger the volume. I had a 6TB volume, which fell apart when I filled it with more than 1.5TB. I shrunk it to a 4.5TB volume, which failed at 3TB. A 3TB volume + two 1.5TB volumes so far seems stable. I'm pretty sure that Google's file systems are much, much bigger. Thus far, the only FS's I've seen real reliability out of have been ReiserFS 3.6 and Reiser4. Of course, having been designed by a wife-murderer makes them hard to advertise. Be warned, Google. Backup often...and onto a filesystem -other than- EXT4. I wish I could get word to Google. Ext4 has been terribly unreliable and especially bad at recovering from crashes. In my server, it seems to become less reliable the more data and the larger the volume. I had a 6TB volume, which fell apart when I filled it with more than 1.5TB. I shrunk it to a 4.5TB volume, which failed at 3TB. A 3TB volume + two 1.5TB volumes so far seems stable. I'm pretty sure that Google's file systems are much, much bigger.

Thus far, the only FS's I've seen real reliability out of have been ReiserFS 3.6 and Reiser4. Of course, having been designed by a wife-murderer makes them hard to advertise.

Be warned, Google. Backup often…and onto a filesystem -other than- EXT4.

]]> By: Williamshttp://techie-buzz.com/foss/google-implements-ext4.html/comment-page-1#comment-50281 Williams Fri, 15 Jan 2010 22:50:34 +0000 http://techie-buzz.com/?p=16855#comment-50281 Thats great news that google implements ext4 file systems. I think it will improve performance of google. Thats great news that google implements ext4 file systems. I think it will improve performance of google.

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