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Martin Herrman wrote: |
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> All, |
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> |
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> After reading this: |
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> |
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> http://ext4.wiki.kernel.org/index.php/Ext4_Howto#Converting_an_ext3_filesystem_to_ext4 |
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> |
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> do you have any experience with mounting your ext3 filesystems using |
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> the ext4 module? Is the performance improvement noticeable? |
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I haven't tried it directly, but I remember forgetting to compile-in |
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ext2 support and then being unable to mount /boot (ext2) despite having |
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ext4 support |
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|
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|
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> |
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> And how about using the extra options: |
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> |
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> |# tune2fs -O extents,uninit_bg,dir_index /dev//DEV |
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> /| |
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|
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I use all those, except uninit_bg without a problem. |
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In fact, I use dir_index,filetypes,sparse_super,acl,user_xattr without a |
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problem. |
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|
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But I have noticed that sometimes some mount options in /etc/fstab can |
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prevent mounting or cause an error and mount "/" in ro mode, not always |
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the same. I have noticed that I can mount ordinary partition with one |
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option combination but fail when mounting /dev/md2 in precisely same |
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way. Basic "noatime" works always,though. |
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|
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> |/ |
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> /|? |
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> |
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> How stable do you think that the ext4 module actually is? (using |
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> recent kernels, e.g. 2.6.29) |
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> |
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I had many problems ( files dissapearing after reboot, other files |
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getting strange content etc), but after ext4 problems were published |
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about and corresponding pathes in kernel everything works fine for me. I |
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haven't had a single issue after that, and I'm using it on two lightly |
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loaded servers and my workstation. |
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