I recently encountered a problem with XFS: while hacking on some network stuff
I crashed my box multiple times. Every time I saved a file directly before the crash
XFS filled the file with 0-bytes (I assume at recovery). The file size was unchanged.
Syncing and waiting a couple of seconds before crashing the box helped. To confirm
my network hacking didn't accidentally damage XFS data structures I created a
module which does nothing more than dereferencing a NULL pointer in softirq
context, the problem persisted.
ver_linux:
Gnu C 3.3.2
Gnu make 3.80
util-linux 2.12
mount 2.12
module-init-tools 0.9.15-pre2
e2fsprogs 1.35-WIP
xfsprogs 2.5.11
nfs-utils 1.0.5
Linux C Library 2.3.2
Dynamic linker (ldd) 2.3.2
Procps 3.1.12
Net-tools 1.60
Console-tools 0.2.3
Sh-utils 5.0.91
Modules Loaded sch_hfsc iptable_filter ipt_MARK iptable_mangle ip_tables cls_fw oprofile nfsd exportfs deflate zlib_deflate twofish serpent aes blowfish des sha256 sha1 md5 af_key 8250 serial_core nfs lockd sunrpc af_packet snd_pcm_oss snd_mixer_oss snd_ens1371 snd_rawmidi snd_seq_device snd_pcm snd_page_alloc snd_timer snd_ac97_codec snd soundcore 8139too mii rtc unix
xfsprogs 2.5.11-1 (debian)
If more specific information is required please tell me ..
Best regards,
Patrick