[email protected] writes: > Hello Nikolaus, > > Nikolaus Rath: >> I have set up diskless fat clients with kernel 2.6.32. The root filesystem >> is aufs. Underlying the aufs is an rw tmpfs and a ro squashfs, the later >> mounted from NBD. >> >> The problems is that the fat clients work fine for a little while, but then >> reproducibly freeze completely within a few hours after booting. The last >> syslog messages that the server receives are: > ::: >> Jul 10 14:11:38 beta kernel: [25560.688168] Call Trace: >> Jul 10 14:11:38 beta kernel: [25560.688185] [<c058a5ca>] >> io_schedule+0x3a/0x60 >> Jul 10 14:11:38 beta kernel: [25560.688194] [<c022d1f8>] >> sync_buffer+0x38/0x40 >> Jul 10 14:11:38 beta kernel: [25560.688201] [<c058ad6d>] >> __wait_on_bit+0x4d/0x70 >> Jul 10 14:11:38 beta kernel: [25560.688207] [<c022d1c0>] ? >> sync_buffer+0x0/0x40 >> Jul 10 14:11:38 beta kernel: [25560.688214] [<c022d1c0>] ? >> sync_buffer+0x0/0x40 >> Jul 10 14:11:38 beta kernel: [25560.688220] [<c058ae3b>] >> out_of_line_wait_on_bit+0xab/0xc0 >> Jul 10 14:11:38 beta kernel: [25560.688230] [<c0167850>] ? >> wake_bit_function+0x0/0x50 >> Jul 10 14:11:38 beta kernel: [25560.688237] [<c022d1be>] >> __wait_on_buffer+0x2e/0x30 >> Jul 10 14:11:38 beta kernel: [25560.688266] [<f80ec30b>] >> squashfs_read_data+0x30b/0x720 [squashfs] > ::: > > The call trace shows the process stops in the block device layer, > squashfs --> NBD. I'd suggest you to test NBD by using it for several > hours.
Excellent suggestion, thanks. When I looked into nbd, I found https://bugs.launchpad.net/ltsp/+bug/589034. I will try to disable nbd-proxy and report if that helps. Best, -Nikolaus -- »Time flies like an arrow, fruit flies like a Banana.« PGP fingerprint: 5B93 61F8 4EA2 E279 ABF6 02CF A9AD B7F8 AE4E 425C ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first
