hardcoresushi/libgocryptfs
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Force -noprealloc on Btrfs

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Preallocation on Btrfs is broken ( https://github.com/rfjakob/gocryptfs/issues/395 ,
https://lore.kernel.org/linux-btrfs/CAPv9Zmk46As_P9Gyf_icET53xRda63h7iC1meES9xbdDEt9qow@mail.gmail.com/ )
and slow ( https://github.com/rfjakob/gocryptfs/issues/63 ).
This commit is contained in:
Jakob Unterwurzacher 2019-08-04 13:45:10 +02:00
parent abb2f1fad0
commit 13055278f5
1 changed files with 14 additions and 0 deletions
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14
mount.go
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@ -19,6 +19,8 @@ import (
"syscall"
"time"
"golang.org/x/sys/unix"
"github.com/hanwen/go-fuse/fuse"
"github.com/hanwen/go-fuse/fuse/nodefs"
"github.com/hanwen/go-fuse/fuse/pathfs"
@ -95,6 +97,18 @@ func doMount(args *argContainer) {
}
}()
}
// Preallocation on Btrfs is broken ( https://github.com/rfjakob/gocryptfs/issues/395 )
// and slow ( https://github.com/rfjakob/gocryptfs/issues/63 ).
if !args.noprealloc {
var st unix.Statfs_t
err = unix.Statfs(args.cipherdir, &st)
if err == nil && st.Type == unix.BTRFS_SUPER_MAGIC {
tlog.Info.Printf(tlog.ColorYellow +
"Btrfs detected, forcing -noprealloc. See https://github.com/rfjakob/gocryptfs/issues/395 for why." +
tlog.ColorReset)
args.noprealloc = true
}
}
// We cannot use JSON for pretty-printing as the fields are unexported
tlog.Debug.Printf("cli args: %#v", args)
// Initialize gocryptfs (read config file, ask for password, ...)