[lkml]   [2006]   [Sep]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectVFAT truncate performance

extending files by ftruncate(2) runs very slow on VFAT file
systems. On my USB harddisk w/ VFAT, it takes 14 seconds to extend an
empty file to 1 GB. On a memory stick, it takes well over 4 minutes.

My question is: is this problem on the conceptual level (ie there is
no way of extending files on FAT that doesn't involve many disk
operations) or is the current Linux fs driver suboptimal in this

The reason for asking is that I run Samba which service files on USB
devices (w/ VFAT for portability) to Windows XP clients. When copying
files to the Samba server, Microsoft SMB clients seem to extend the
file before actually starting to copy the data. This results in
sluggishness and timeouts when copying large files to VFAT


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2006-09-05 15:55    [W:0.024 / U:2.300 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site