I've got a little problem. I set up a ftp-space and mounted it via curlftpfs. Well, small backups are working fine, but larger backups are failing.
Either the backup task quits with messages like "broken pipe" or the backup is not completed and hangs at 100%.
Quote:
INFO: starting new backup job: vzdump 102 --remove 0 --mode snapshot --compress lzo --storage ftpdir --node mynode
INFO: Starting Backup of VM 102 (qemu)
INFO: status = running
INFO: update VM 102: -lock backup
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO: creating archive '/ftpdir/dump/vzdump-qemu-102-2014_09_17-08_27_03.vma.lzo'
INFO: started backup task 'db004854-f8e3-4f26-b4bd-6b73460d1835'
INFO: status: 0% (335413248/536870912000), sparse 0% (297332736), duration 3, 111/12 MB/s
INFO: status: 1% (5433589760/536870912000), sparse 0% (2610274304), duration 57, 94/51 MB/s
INFO: status: 2% (10856038400/536870912000), sparse 1% (8030154752), duration 87, 180/0 MB/s
INFO: status: 3% (16229597184/536870912000), sparse 2% (13402165248), duration 118, 173/0 MB/s
INFO: status: 4% (21485256704/536870912000), sparse 3% (18655227904), duration 147, 181/0 MB/s
INFO: status: 5% (26863796224/536870912000), sparse 4% (24031535104), duration 178, 173/0 MB/s
INFO: status: 6% (32346210304/536870912000), sparse 5% (29494026240), duration 211, 166/0 MB/s
INFO: status: 7% (37698011136/536870912000), sparse 6% (34844483584), duration 240, 184/0 MB/s
INFO: status: 8% (43081728000/536870912000), sparse 7% (40226127872), duration 269, 185/0 MB/s
INFO: status: 9% (48338436096/536870912000), sparse 7% (40738893824), duration 352, 63/57 MB/s
INFO: status: 10% (53694169088/536870912000), sparse 7% (40904134656), duration 451, 54/52 MB/s
INFO: status: 11% (59091714048/536870912000), sparse 7% (41179566080), duration 550, 54/51 MB/s
INFO: status: 12% (64457015296/536870912000), sparse 7% (41400152064), duration 651, 53/50 MB/s
INFO: status: 13% (69801607168/536870912000), sparse 7% (41797697536), duration 740, 60/55 MB/s
INFO: status: 14% (75174117376/536870912000), sparse 7% (42182352896), duration 835, 56/52 MB/s
INFO: status: 15% (80537452544/536870912000), sparse 7% (42547998720), duration 935, 53/49 MB/s
INFO: status: 16% (85915992064/536870912000), sparse 7% (42738003968), duration 1035, 53/51 MB/s
INFO: status: 17% (91321139200/536870912000), sparse 8% (43017158656), duration 1132, 55/52 MB/s
INFO: status: 18% (96651051008/536870912000), sparse 8% (43217596416), duration 1249, 45/43 MB/s
INFO: status: 19% (102013599744/536870912000), sparse 8% (43499094016), duration 1362, 47/44 MB/s
INFO: status: 20% (107419860992/536870912000), sparse 8% (43753431040), duration 1467, 51/49 MB/s
INFO: status: 21% (112778280960/536870912000), sparse 8% (44048039936), duration 1574, 50/47 MB/s
INFO: status: 22% (118141616128/536870912000), sparse 8% (44218261504), duration 1682, 49/48 MB/s
INFO: status: 23% (123535228928/536870912000), sparse 8% (45944676352), duration 1768, 62/42 MB/s
INFO: status: 24% (128887816192/536870912000), sparse 9% (51267166208), duration 1796, 191/1 MB/s
INFO: status: 25% (134286409728/536870912000), sparse 10% (56620920832), duration 1825, 186/1 MB/s
INFO: status: 26% (139655380992/536870912000), sparse 11% (61961695232), duration 1856, 173/0 MB/s
INFO: status: 27% (145001349120/536870912000), sparse 12% (67288346624), duration 1885, 184/0 MB/s
INFO: status: 28% (150469148672/536870912000), sparse 13% (72738787328), duration 1914, 188/0 MB/s
INFO: status: 29% (155745976320/536870912000), sparse 14% (77923852288), duration 1943, 181/3 MB/s
INFO: status: 30% (161111080960/536870912000), sparse 15% (83272171520), duration 1973, 178/0 MB/s
INFO: status: 31% (166470877184/536870912000), sparse 16% (88296599552), duration 2013, 133/8 MB/s
INFO: status: 32% (171854069760/536870912000), sparse 17% (93080211456), duration 2087, 72/8 MB/s
INFO: status: 33% (177185292288/536870912000), sparse 18% (97192013824), duration 2454, 14/3 MB/s
INFO: status: 34% (182636511232/536870912000), sparse 18% (101347700736), duration 2556, 53/12 MB/s
INFO: status: 35% (187913338880/536870912000), sparse 19% (105332109312), duration 2622, 79/19 MB/s
INFO: status: 36% (193334804480/536870912000), sparse 20% (110643994624), duration 2655, 164/3 MB/s
INFO: status: 37% (198743949312/536870912000), sparse 21% (115582738432), duration 2689, 159/13 MB/s
INFO: status: 38% (204038602752/536870912000), sparse 21% (117158789120), duration 2768, 67/47 MB/s
INFO: status: 39% (209390600192/536870912000), sparse 21% (117547835392), duration 2960, 27/25 MB/s
INFO: status: 40% (214791880704/536870912000), sparse 21% (117856653312), duration 3164, 26/24 MB/s
INFO: status: 41% (220139880448/536870912000), sparse 22% (120890351616), duration 3226, 86/37 MB/s
INFO: status: 42% (225579630592/536870912000), sparse 23% (126154579968), duration 3256, 181/5 MB/s
INFO: status: 43% (230923042816/536870912000), sparse 24% (131286851584), duration 3287, 172/6 MB/s
INFO: status: 44% (236427083776/536870912000), sparse 25% (136665313280), duration 3318, 177/4 MB/s
INFO: status: 45% (241598070784/536870912000), sparse 26% (141613797376), duration 3350, 161/6 MB/s
INFO: status: 46% (247007215616/536870912000), sparse 27% (146869805056), duration 3380, 180/5 MB/s
INFO: status: 47% (252505423872/536870912000), sparse 28% (152125591552), duration 3412, 171/7 MB/s
INFO: status: 48% (257769472000/536870912000), sparse 29% (157195251712), duration 3444, 164/6 MB/s
INFO: status: 49% (263218397184/536870912000), sparse 30% (162491424768), duration 3476, 170/4 MB/s
INFO: status: 50% (268459900928/536870912000), sparse 31% (167616516096), duration 3508, 163/3 MB/s
INFO: status: 51% (273832673280/536870912000), sparse 32% (172691595264), duration 3542, 158/8 MB/s
INFO: status: 52% (279273734144/536870912000), sparse 33% (178039771136), duration 3573, 175/2 MB/s
INFO: status: 53% (284541845504/536870912000), sparse 33% (180453138432), duration 3643, 75/40 MB/s
INFO: status: 54% (290062008320/536870912000), sparse 34% (183768432640), duration 3705, 89/35 MB/s
INFO: status: 55% (295376715776/536870912000), sparse 35% (188776476672), duration 3736, 171/9 MB/s
INFO: status: 56% (300763971584/536870912000), sparse 36% (194061975552), duration 3769, 163/3 MB/s
INFO: status: 57% (306169184256/536870912000), sparse 37% (198805082112), duration 3812, 125/15 MB/s
INFO: status: 58% (311497129984/536870912000), sparse 37% (203661250560), duration 3845, 161/14 MB/s
INFO: status: 59% (316771270656/536870912000), sparse 38% (204311359488), duration 3938, 56/49 MB/s
INFO: status: 60% (322134605824/536870912000), sparse 38% (204532088832), duration 4042, 51/49 MB/s
INFO: status: 61% (327524548608/536870912000), sparse 38% (204918095872), duration 4145, 52/48 MB/s
INFO: status: 62% (332887293952/536870912000), sparse 38% (205172236288), duration 4247, 52/50 MB/s
INFO: status: 63% (338257575936/536870912000), sparse 38% (205547540480), duration 4349, 52/48 MB/s
INFO: status: 64% (343641161728/536870912000), sparse 38% (205812187136), duration 4450, 53/50 MB/s
INFO: status: 65% (348981690368/536870912000), sparse 38% (206346125312), duration 4553, 51/46 MB/s
INFO: status: 66% (354360229888/536870912000), sparse 38% (206713057280), duration 4654, 53/49 MB/s
INFO: status: 67% (359738769408/536870912000), sparse 38% (207159644160), duration 4754, 53/49 MB/s
INFO: status: 68% (365106954240/536870912000), sparse 38% (207598256128), duration 4860, 50/46 MB/s
INFO: status: 69% (370587926528/536870912000), sparse 39% (212911906816), duration 4901, 133/4 MB/s
INFO: status: 70% (375914299392/536870912000), sparse 40% (218073939968), duration 4931, 177/5 MB/s
INFO: status: 71% (381368664064/536870912000), sparse 41% (223436660736), duration 4966, 155/2 MB/s
INFO: status: 72% (386617638912/536870912000), sparse 42% (228685627392), duration 4996, 174/0 MB/s
INFO: status: 73% (392028946432/536870912000), sparse 43% (234090192896), duration 5028, 169/0 MB/s
INFO: status: 74% (397305708544/536870912000), sparse 44% (237779759104), duration 5078, 105/31 MB/s
INFO: status: 75% (402659475456/536870912000), sparse 45% (242087669760), duration 5118, 133/26 MB/s
INFO: status: 76% (408099553280/536870912000), sparse 46% (247449858048), duration 5154, 151/2 MB/s
INFO: status: 77% (413436149760/536870912000), sparse 47% (252779569152), duration 5189, 152/0 MB/s
INFO: status: 78% (418861809664/536870912000), sparse 48% (258205200384), duration 5223, 159/0 MB/s
INFO: status: 79% (424277835776/536870912000), sparse 49% (263621083136), duration 5258, 154/0 MB/s
INFO: status: 80% (429614497792/536870912000), sparse 50% (268846039040), duration 5290, 166/3 MB/s
INFO: status: 81% (434908889088/536870912000), sparse 51% (273875795968), duration 5324, 155/7 MB/s
INFO: status: 82% (440259837952/536870912000), sparse 51% (279059091456), duration 5356, 167/5 MB/s
INFO: status: 83% (445628678144/536870912000), sparse 52% (284231143424), duration 5388, 167/6 MB/s
INFO: status: 84% (450983165952/536870912000), sparse 53% (289464160256), duration 5421, 162/3 MB/s
INFO: status: 85% (456447229952/536870912000), sparse 54% (294778748928), duration 5456, 156/4 MB/s
INFO: status: 86% (461727727616/536870912000), sparse 55% (299924303872), duration 5487, 170/4 MB/s
INFO: status: 87% (467196837888/536870912000), sparse 56% (305070489600), duration 5522, 156/9 MB/s
INFO: status: 88% (472510300160/536870912000), sparse 57% (310342737920), duration 5556, 156/1 MB/s
INFO: status: 89% (477833265152/536870912000), sparse 58% (315593289728), duration 5593, 143/1 MB/s
INFO: status: 90% (483234545664/536870912000), sparse 59% (320994549760), duration 5626, 163/0 MB/s
INFO: status: 91% (488556199936/536870912000), sparse 60% (326316191744), duration 5657, 171/0 MB/s
INFO: status: 92% (493954007040/536870912000), sparse 61% (331709288448), duration 5689, 168/0 MB/s
INFO: status: 93% (499395395584/536870912000), sparse 62% (337085497344), duration 5722, 164/1 MB/s
INFO: status: 94% (504806375424/536870912000), sparse 63% (342496456704), duration 5757, 154/0 MB/s
INFO: status: 95% (510125015040/536870912000), sparse 64% (347814014976), duration 5791, 156/0 MB/s
INFO: status: 96% (515531538432/536870912000), sparse 65% (353121525760), duration 5825, 159/2 MB/s
INFO: status: 97% (520817147904/536870912000), sparse 66% (358407135232), duration 5856, 170/0 MB/s
INFO: status: 98% (526294450176/536870912000), sparse 67% (363884437504), duration 5886, 182/0 MB/s
INFO: status: 99% (531537854464/536870912000), sparse 68% (369127841792), duration 5918, 163/0 MB/s
INFO: status: 100% (536870912000/536870912000), sparse 69% (374460899328), duration 5948, 177/0 MB/s
INFO: transferred 536870 MB in 5948 seconds (90 MB/s)
The ftp-server is alright, I was able to upload 100GB file without problems via terminal.