search for: _write_kbytes

.../proc/partitions 8 0 3907018584 sda # tune2fs -l /dev/sda | grep Lifetime Lifetime writes: 2503 GB 3.7 TB Disk/Partition, 3.6 TB space in use but only 2.4 TB writes. No, there are no 1.2 TB + x allocated but never written to clusters on that file system. And if /sys/fs/ext4/*/*_write_kbytes are as correct as the "Lifetime writes" value, than the correct answer to Jelle's question is: "There is no way currently to figure out the actual number of writes to a device". Regards, Bodo

...: Lifetime writes: 27 GB : : Note that this number isn't wholly accurate, but rather a guideline. IIRC it is not updated on disk all the time, so may lose writes. You can also get this information from /sys/fs/ext4 including data just for the current mount: # grep . /sys/fs/ext4/*/*_write_kbytes /sys/fs/ext4/dm-0/lifetime_write_kbytes:77632360 /sys/fs/ext4/dm-0/session_write_kbytes:7124948 /sys/fs/ext4/dm-19/lifetime_write_kbytes:28081448 /sys/fs/ext4/dm-19/session_write_kbytes:16520 /sys/fs/ext4/dm-2/lifetime_write_kbytes:60847858 /sys/fs/ext4/dm-2/session_write_kbytes:7739388 /sys/fs/ex...

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello everyone, I been using CF cards for almost more then 7 years now with ext file-system without any major problems on ALIX boards. Last year I took 30 other systems in production with ext4 and the CF cards been dropping out pretty fast, it may have been a bad batch but I do want to look at it. I don't think the devices writes a lot of IO (is

...> # tune2fs -l /dev/sda | grep Lifetime > Lifetime writes: 2503 GB > > 3.7 TB Disk/Partition, 3.6 TB space in use but only 2.4 TB writes. > > No, there are no 1.2 TB + x allocated but never written to clusters on > that file system. > > And if /sys/fs/ext4/*/*_write_kbytes are as correct as the "Lifetime > writes" value, than the correct answer to Jelle's question is: "There is > no way currently to figure out the actual number of writes to a device". The "lifetime writes" value has not been around forever, so if the filesyste...