Hello,

I use s3ql for quite some time as my apache webroot, which serves about 
300gb of files and some php applications. I had few problems with high I/O 
scenarios in the past (using the 1.x series), where the mount daemon would 
die under high load, but managed to solve them all with fsck.s3ql after 
rebooting.

My current server was running s3ql 2.11 on ubuntu 14.04. Earlier today, I 
was performing full backups from that node to another s3 bucket using 
duplicity, and after lots of gbs transferred, s3ql failed and I had to 
reboot the server.

Now fsck.s3ql is hanging at ..processed 99500 objects so far.. fsck.log 
(with --debug) shows a lot of HEAD requests, It seems to be running  a 
verify for every block (about 1400000). I also tried downloading a metadata 
backup, but it hangs at the same point, here's an excerpt of the ongoing 
log:

2015-02-16 22:44:39.697 19239:MainThread s3ql.backends.s3c.lookup: 
lookup(s3ql_data_417399)
2015-02-16 22:44:39.697 19239:MainThread s3ql.backends.s3c._do_request: 
preparing HEAD /homes3ql_data_417399?None, qs=None
2015-02-16 22:44:39.697 19239:MainThread s3ql.backends.s3c._send_request: 
_send_request(): HEAD /homes3ql_data_417399
2015-02-16 22:44:39.717 19239:MainThread s3ql.backends.s3c.lookup: 
lookup(s3ql_data_417400)
2015-02-16 22:44:39.717 19239:MainThread s3ql.backends.s3c._do_request: 
preparing HEAD /homes3ql_data_417400?None, qs=None
2015-02-16 22:44:39.717 19239:MainThread s3ql.backends.s3c._send_request: 
_send_request(): HEAD /homes3ql_data_417400
2015-02-16 22:44:39.750 19239:MainThread s3ql.backends.s3c.lookup: 
lookup(s3ql_data_417401)
2015-02-16 22:44:39.750 19239:MainThread s3ql.backends.s3c._do_request: 
preparing HEAD /homes3ql_data_417401?None, qs=None
2015-02-16 22:44:39.750 19239:MainThread s3ql.backends.s3c._send_request: 
_send_request(): HEAD /homes3ql_data_417401
2015-02-16 22:44:39.797 19239:MainThread s3ql.backends.s3c.lookup: 
lookup(s3ql_data_417402)
2015-02-16 22:44:39.797 19239:MainThread s3ql.backends.s3c._do_request: 
preparing HEAD /homes3ql_data_417402?None, qs=None
2015-02-16 22:44:39.798 19239:MainThread s3ql.backends.s3c._send_request: 
_send_request(): HEAD /homes3ql_data_417402
2015-02-16 22:44:39.830 19239:MainThread s3ql.backends.s3c.lookup: 
lookup(s3ql_data_417403)
2015-02-16 22:44:39.830 19239:MainThread s3ql.backends.s3c._do_request: 
preparing HEAD /homes3ql_data_417403?None, qs=None

Is there any way to disable this behaviour (verifying every block on fsck) ?

I'm recovering those files from my backups, but hope to access this volume 
as well. fsck will probably run for about 11 hours, will post the results 
then.

Thanks in advance

Guilherme

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