[Bug 8177] Problems with big sparsed files

[samba-bugs at samba.org]

https://bugzilla.samba.org/show_bug.cgi?id=8177

--- Comment #11 from Remco Hosman <remco at hosman.xs4all.nl> 2012-03-10 20:37:32 UTC ---
I am having the same issue with ESXi5.0 and rsync 3.0.9. Compiled rsync on a
debian 4.0 system. 
I have a VM and make a snapshot. at that point the original disk file should
not change anymore. 
When the problem does not occur:
*) when the VM is not running
*) when the image file does not exists on the target

when the problem does occur:
*) when the VM is running and the file already exists on the target.

I attached a tgz with straces of the following command:
strace -v -tt -f -o out.log ./rsync --copy-links --recursive --compress
--progress --inplace --bwlimit=100
/vmfs/volumes/4e9007cc-5eb44d46-eace-0019b9e8ff4d/backups/
user at host:/targetdir/
in all 4 cases (running/not running and existing/non existing target file)

but it comes down to this:
--- VM off, file already exists on target machine ---
7754511 20:20:40.298664 open("backuptest/backuptest_7-flat.vmdk",
O_RDONLY|O_LARGEFILE) = 3
7754511 20:20:40.300134 fstat64(0x3, 0xfff6cacc) = 0
7754511 20:20:40.300296 write(1, "backuptest/backuptest_7-flat.vmd"..., 34) =
34
7754511 20:20:40.317672 mmap2(NULL, 266240, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x782f0000
7754511 20:20:40.317831 read(3,
"\25\0\2161\246\210wN\253Y\332O`T\357\354\21\307\344\31"..., 262144) = 262144
7754511 20:20:40.341102 gettimeofday({1331410840, 341167}, NULL) = 0
7754511 20:20:40.341230 ioctl(1, TIOCGPGRP, [7748366]) = 0
7754511 20:20:40.341434 write(1, "        4096   0%   13.38kB/s   "..., 41) =
41
-- bunch of gettimeofday()'s --
7754511 20:20:40.382444 read(3,
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 262143) = 262143

--- VM on, file already exists on target machine ---
7672734 20:24:08.828084 open("backuptest/backuptest_7-flat.vmdk",
O_RDONLY|O_LARGEFILE) = 3
7672734 20:24:08.828808 fstat64(0x3, 0xfff6cacc) = 0
7672734 20:24:08.828976 write(1, "backuptest/backuptest_7-flat.vmd"..., 34) =
34
7672734 20:24:08.829380 mmap2(NULL, 266240, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x782f0000
7672734 20:24:08.829529 read(3,
"\25\0\2161\246\210wN\253Y\332O`T\357\354\21\307\344\31"..., 262144) = 262144
7672734 20:24:08.831043 gettimeofday({1331411048, 831103}, NULL) = 0
7672734 20:24:08.831165 ioctl(1, TIOCGPGRP, [7748509]) = 0
7672734 20:24:08.831367 write(1, "        4096   0%   15.09kB/s   "..., 41) =
41
-- bunch of gettimeofdays()'s --
7672734 20:24:08.847043 read(3, 0x782f0009, 262143) = -1 EINVAL (Invalid
argument)


I am kinda lost at this point.

Remco

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