diff options
Diffstat (limited to 'fsset.py')
| -rw-r--r-- | fsset.py | 76 |
1 files changed, 76 insertions, 0 deletions
@@ -14,6 +14,7 @@ # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. # +import math import string import isys import iutil @@ -515,6 +516,81 @@ class extFileSystem(FileSystemType): self.packages = [ "e2fsprogs" ] self.supportsFsProfiles = True self.fsProfileSpecifier = "-T" + self.resizable = True + + def resize(self, entry, size, progress, chroot='/'): + devicePath = entry.device.setupDevice(chroot) + + log.info("checking %s prior to resize" %(devicePath,)) + w = None + if progress: + w = progress(_("Checking"), + _("Checking filesystem on %s...") %(devicePath), + 100, pulse = True) + + rc = iutil.execWithPulseProgress("e2fsck", ["-f", "-p", "-C", "0", devicePath], + stdout="/dev/tty5", + stderr="/dev/tty5", progress = w) + if rc >= 4: + raise RuntimeError, "Check of %s failed" %(devicePath,) + if progress: + w.pop() + w = progress(_("Resizing"), + _("Resizing filesystem on %s...") %(devicePath), + 100, pulse = True) + + log.info("resizing %s" %(devicePath,)) + rc = iutil.execWithPulseProgress("resize2fs", + ["-p", devicePath, "%sM" %(size,)], + stdout="/dev/tty5", stderr="/dev/tty5", + progress = w) + if progress: + w.pop() + if rc: + raise RuntimeError, "Resize of %s failed" %(devicePath,) + + def getMinimumSize(self, device): + """Return the minimum filesystem size in megabytes""" + devicePath = "/dev/%s" % (device,) + if not os.path.exists(devicePath): + isys.makeDevInode(device, devicePath) + + # FIXME: it'd be nice if we didn't have to parse this out ourselves + buf = iutil.execWithCapture("dumpe2fs", + ["-h", devicePath], + stderr = "/dev/tty5") + blocks = free = bs = 0 + for l in buf.split("\n"): + if l.startswith("Free blocks"): + try: + free = l.split()[2] + free = int(free) + except Exception, e: + log.warning("error determining free blocks on %s: %s" %(devicePath, e)) + free = 0 + elif l.startswith("Block size"): + try: + bs = l.split()[2] + bs = int(bs) + except Exception, e: + log.warning("error determining block size of %s: %s" %(devicePath, e)) + bs = 0 + elif l.startswith("Block count"): + try: + blocks = l.split()[2] + blocks = int(blocks) + except Exception, e: + log.warning("error determining block count of %s: %s" %(devicePath, e)) + blocks = 0 + + if free == 0 or bs == 0: + log.warning("Unable to determinine minimal size for %s", devicePath) + return 1 + + used = math.ceil((blocks - free) * bs / 1024.0 / 1024.0) + log.info("used size of %s is %s" %(devicePath, used)) + # FIXME: should we bump this beyond the absolute minimum? + return used def labelDevice(self, entry, chroot): devicePath = entry.device.setupDevice(chroot) |