Backend storage is 2 SATA directly attached disks. No any caches on SATA controller. Both disks run in mdraid mirror.
Zeroed files have written many days (some files was written and closed 2 weeks ago) ago before power fail.
On Sat, Sep 29, 2012 at 12:19 AM, John R Pierce pierce@hogranch.com wrote:
On 09/28/12 12:09 PM, Ilyas -- wrote:
Hello,
One day our servers farm rebooted unexpectedly (power fail happened) and on centos 6.3 with up2date kernel we lost few hundred files (which probably was opened for reading, NOT writing) on XFS.
Unexpected power lost follow to situation when some files get a zero size.
what sort of physical storage? are you sure it is write-safe ? write-back caches without battery backup are often a cause of data loss.
-- john r pierce N 37, W 122 santa cruz ca mid-left coast
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