Nothing to talk about on a NAS System - ext3 ist stable and there are issues with ext4 used in a RAID.Do you think with ext4 I will gain some boost at least in writing operations?
Add this to the fact, that most user are running RAID-Konfiguration with common Desktopdrives where the TLER/CCTL is set far to high and you have some unpredictble behavior resulting in lost data, or large files cut to 2GB like reported by some users in the german forum - returning to ext3 solved the troubles.The delayed allocation in Ext4 file system always poses some additional risks of data loss in situations where your system crashes before all the data has got written on the drive. The general situation where it might take place is an application replacing the contents of file without forcing write to disk with the fsync. Issues might occur if system gets crashed before actual write operation takes place. In such situations, the kernel of Ext4 file system would clear the contents of file before crash and thus the contents of file would completely lose. This behavior generally cause file system corruption and put you in need of Linux Recovery.
Files >> 2 TB created e.g. by Time Machine is a very reasonable argument...Complicated wrote:There is no reason for ext4 at the moment.
Sure, but rather not that important for Homeusers. And I don't know if the argument outweights the RAID-Trouble for the Businessusers and how much Time Machine is in use thereschumaku wrote:Files >> 2 TB created e.g. by Time Machine is a very reasonable argument...Complicated wrote:There is no reason for ext4 at the moment.
Linus Torvalds wrote:It literally does everything the wrong way around -- writing data later than the metadata that points to it. Whoever came up with that solution was a moron. No ifs, buts, or maybes about it. At least with ext3 it's not the default mode."
Linus Torvalds, Ted Ts'o, Alan Cox, Ingo Molnar, Andrew Morton and other Linux kernel developers are embroiled in a contentious discussion over the sense -- or nonsense -- of journaling and delayed allocation before a commit in the ext3 and ext4 filesystems. Heavy words are flying.
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